/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.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-dev-29289db [2021-06-05 14:50:57,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 14:50:57,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 14:50:57,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 14:50:57,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 14:50:57,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 14:50:57,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 14:50:57,298 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-Separate.epf [2021-06-05 14:50:57,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 14:50:57,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 14:50:57,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 14:50:57,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 14:50:57,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 14:50:57,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 14:50:57,322 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 14:50:57,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 14:50:57,322 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 14:50:57,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 14:50:57,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 14:50:57,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 14:50:57,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 14:50:57,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 14:50:57,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 14:50:57,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 14:50:57,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 14:50:57,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 14:50:57,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 14:50:57,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 14:50:57,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 14:50:57,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 14:50:57,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 14:50:57,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 14:50:57,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 14:50:57,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 14:50:57,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 14:50:57,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 14:50:57,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 14:50:57,324 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 14:50:57,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 14:50:57,325 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 14:50:57,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 14:50:57,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 14:50:57,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 14:50:57,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 14:50:57,542 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 14:50:57,543 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 14:50:57,543 INFO L432 ainManager$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 [2021-06-05 14:50:57,543 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl' [2021-06-05 14:50:57,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 14:50:57,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 14:50:57,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 14:50:57,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 14:50:57,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 14:50:57,589 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 05.06 02:50:57" (1/1) ... [2021-06-05 14:50:57,601 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 05.06 02:50:57" (1/1) ... [2021-06-05 14:50:57,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 14:50:57,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 14:50:57,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 14:50:57,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 14:50:57,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:57" (1/1) ... [2021-06-05 14:50:57,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:57" (1/1) ... [2021-06-05 14:50:57,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:57" (1/1) ... [2021-06-05 14:50:57,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:57" (1/1) ... [2021-06-05 14:50:57,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:57" (1/1) ... [2021-06-05 14:50:57,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:57" (1/1) ... [2021-06-05 14:50:57,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:57" (1/1) ... [2021-06-05 14:50:57,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 14:50:57,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 14:50:57,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 14:50:57,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 14:50:57,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 14:50:57,670 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 14:50:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 14:50:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 14:50:57,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 14:50:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 14:50:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 14:50:57,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 14:50:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 14:50:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 14:50:57,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 14:50:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 14:50:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 14:50:57,671 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 14:50:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 14:50:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 14:50:57,672 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 14:50:57,862 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 14:50:57,862 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 14:50:57,863 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:50:57 BoogieIcfgContainer [2021-06-05 14:50:57,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 14:50:57,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 14:50:57,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 14:50:57,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 14:50:57,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:57" (1/2) ... [2021-06-05 14:50:57,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d75960 and model type bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 02:50:57, skipping insertion in model container [2021-06-05 14:50:57,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:50:57" (2/2) ... [2021-06-05 14:50:57,883 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-4.wvr.bpl [2021-06-05 14:50:57,886 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 14:50:57,887 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 14:50:57,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 14:50:57,887 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 14:50:57,923 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 14:50:57,937 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-05 14:50:57,949 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 14:50:57,949 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 14:50:57,949 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 14:50:57,949 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 14:50:57,949 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 14:50:57,950 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 14:50:57,950 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 14:50:57,950 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 14:50:57,959 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 81 transitions, 194 flow [2021-06-05 14:51:12,277 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) [2021-06-05 14:51:12,407 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) [2021-06-05 14:51:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:51:12,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:12,787 INFO L521 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] [2021-06-05 14:51:12,788 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:51:12,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:12,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1096141821, now seen corresponding path program 1 times [2021-06-05 14:51:12,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:12,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854264577] [2021-06-05 14:51:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:51:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:51:12,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:51:12,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854264577] [2021-06-05 14:51:12,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854264577] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:51:12,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:51:12,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:51:12,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578463621] [2021-06-05 14:51:12,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:51:12,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:51:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:51:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:51:13,096 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) [2021-06-05 14:51:13,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:51:13,865 INFO L93 Difference]: Finished difference Result 93964 states and 349229 transitions. [2021-06-05 14:51:13,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:51:13,867 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 [2021-06-05 14:51:13,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:51:14,437 INFO L225 Difference]: With dead ends: 93964 [2021-06-05 14:51:14,437 INFO L226 Difference]: Without dead ends: 93964 [2021-06-05 14:51:14,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:51:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-06-05 14:51:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2021-06-05 14:51:24,350 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) [2021-06-05 14:51:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 349229 transitions. [2021-06-05 14:51:24,643 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 349229 transitions. Word has length 75 [2021-06-05 14:51:24,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:51:24,643 INFO L482 AbstractCegarLoop]: Abstraction has 93964 states and 349229 transitions. [2021-06-05 14:51:24,644 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) [2021-06-05 14:51:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 349229 transitions. [2021-06-05 14:51:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:51:24,845 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:24,846 INFO L521 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] [2021-06-05 14:51:24,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 14:51:24,846 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:51:24,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:24,847 INFO L82 PathProgramCache]: Analyzing trace with hash 493735869, now seen corresponding path program 2 times [2021-06-05 14:51:24,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:24,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854500571] [2021-06-05 14:51:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:51:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:51:24,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:51:24,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854500571] [2021-06-05 14:51:24,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854500571] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:51:24,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:51:24,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:51:24,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958233753] [2021-06-05 14:51:24,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:51:24,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:51:24,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:51:24,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:51:24,903 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) [2021-06-05 14:51:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:51:25,790 INFO L93 Difference]: Finished difference Result 93964 states and 344719 transitions. [2021-06-05 14:51:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:51:25,790 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 [2021-06-05 14:51:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:51:26,377 INFO L225 Difference]: With dead ends: 93964 [2021-06-05 14:51:26,377 INFO L226 Difference]: Without dead ends: 93964 [2021-06-05 14:51:26,379 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:51:34,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-06-05 14:51:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2021-06-05 14:51:35,916 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) [2021-06-05 14:51:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 344719 transitions. [2021-06-05 14:51:36,172 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 344719 transitions. Word has length 75 [2021-06-05 14:51:36,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:51:36,173 INFO L482 AbstractCegarLoop]: Abstraction has 93964 states and 344719 transitions. [2021-06-05 14:51:36,173 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) [2021-06-05 14:51:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 344719 transitions. [2021-06-05 14:51:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:51:36,343 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:36,343 INFO L521 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] [2021-06-05 14:51:36,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 14:51:36,343 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:51:36,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:36,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2131980333, now seen corresponding path program 3 times [2021-06-05 14:51:36,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:36,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517322990] [2021-06-05 14:51:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:51:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:51:36,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:51:36,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517322990] [2021-06-05 14:51:36,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517322990] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:51:36,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:51:36,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:51:36,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052400286] [2021-06-05 14:51:36,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:51:36,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:51:36,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:51:36,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:51:36,502 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) [2021-06-05 14:51:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:51:38,840 INFO L93 Difference]: Finished difference Result 193744 states and 713684 transitions. [2021-06-05 14:51:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 14:51:38,840 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 [2021-06-05 14:51:38,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:51:39,735 INFO L225 Difference]: With dead ends: 193744 [2021-06-05 14:51:39,735 INFO L226 Difference]: Without dead ends: 193744 [2021-06-05 14:51:39,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 283.7ms TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:51:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193744 states. [2021-06-05 14:51:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193744 to 100718. [2021-06-05 14:51:52,322 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) [2021-06-05 14:51:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100718 states to 100718 states and 368137 transitions. [2021-06-05 14:51:52,935 INFO L78 Accepts]: Start accepts. Automaton has 100718 states and 368137 transitions. Word has length 75 [2021-06-05 14:51:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:51:52,937 INFO L482 AbstractCegarLoop]: Abstraction has 100718 states and 368137 transitions. [2021-06-05 14:51:52,945 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) [2021-06-05 14:51:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 100718 states and 368137 transitions. [2021-06-05 14:51:53,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:51:53,127 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:53,127 INFO L521 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] [2021-06-05 14:51:53,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 14:51:53,127 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:51:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:53,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1590701179, now seen corresponding path program 4 times [2021-06-05 14:51:53,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:53,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10252271] [2021-06-05 14:51:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:51:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:51:53,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:51:53,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10252271] [2021-06-05 14:51:53,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10252271] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:51:53,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:51:53,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:51:53,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422947658] [2021-06-05 14:51:53,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:51:53,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:51:53,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:51:53,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:51:53,343 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) [2021-06-05 14:51:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:51:55,256 INFO L93 Difference]: Finished difference Result 172724 states and 635449 transitions. [2021-06-05 14:51:55,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 14:51:55,257 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 [2021-06-05 14:51:55,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:51:56,002 INFO L225 Difference]: With dead ends: 172724 [2021-06-05 14:51:56,002 INFO L226 Difference]: Without dead ends: 172724 [2021-06-05 14:51:56,003 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 550.5ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-06-05 14:52:06,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172724 states. [2021-06-05 14:52:07,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172724 to 121087. [2021-06-05 14:52:08,115 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) [2021-06-05 14:52:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121087 states to 121087 states and 443400 transitions. [2021-06-05 14:52:08,816 INFO L78 Accepts]: Start accepts. Automaton has 121087 states and 443400 transitions. Word has length 75 [2021-06-05 14:52:08,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:08,816 INFO L482 AbstractCegarLoop]: Abstraction has 121087 states and 443400 transitions. [2021-06-05 14:52:08,816 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) [2021-06-05 14:52:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 121087 states and 443400 transitions. [2021-06-05 14:52:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:52:09,035 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:09,035 INFO L521 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] [2021-06-05 14:52:09,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 14:52:09,036 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:52:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:09,036 INFO L82 PathProgramCache]: Analyzing trace with hash -833082245, now seen corresponding path program 5 times [2021-06-05 14:52:09,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:09,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817256910] [2021-06-05 14:52:09,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:09,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:09,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817256910] [2021-06-05 14:52:09,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817256910] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:09,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:09,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 14:52:09,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129986558] [2021-06-05 14:52:09,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 14:52:09,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:09,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 14:52:09,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-06-05 14:52:09,263 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) [2021-06-05 14:52:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:11,712 INFO L93 Difference]: Finished difference Result 300980 states and 1100291 transitions. [2021-06-05 14:52:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 14:52:11,713 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 [2021-06-05 14:52:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:12,541 INFO L225 Difference]: With dead ends: 300980 [2021-06-05 14:52:12,541 INFO L226 Difference]: Without dead ends: 300980 [2021-06-05 14:52:12,542 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 224.4ms TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-06-05 14:52:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300980 states. [2021-06-05 14:52:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300980 to 154501. [2021-06-05 14:52:28,819 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) [2021-06-05 14:52:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154501 states to 154501 states and 567659 transitions. [2021-06-05 14:52:29,778 INFO L78 Accepts]: Start accepts. Automaton has 154501 states and 567659 transitions. Word has length 75 [2021-06-05 14:52:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:29,782 INFO L482 AbstractCegarLoop]: Abstraction has 154501 states and 567659 transitions. [2021-06-05 14:52:29,782 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) [2021-06-05 14:52:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 154501 states and 567659 transitions. [2021-06-05 14:52:30,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:52:30,082 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:30,082 INFO L521 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] [2021-06-05 14:52:30,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 14:52:30,083 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:52:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:30,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1787041377, now seen corresponding path program 6 times [2021-06-05 14:52:30,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:30,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799472921] [2021-06-05 14:52:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:30,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:30,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799472921] [2021-06-05 14:52:30,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799472921] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:30,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:30,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:52:30,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352653448] [2021-06-05 14:52:30,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:52:30,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:30,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:52:30,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:52:30,173 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) [2021-06-05 14:52:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:31,569 INFO L93 Difference]: Finished difference Result 191695 states and 691514 transitions. [2021-06-05 14:52:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 14:52:31,570 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 14:52:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:32,058 INFO L225 Difference]: With dead ends: 191695 [2021-06-05 14:52:32,059 INFO L226 Difference]: Without dead ends: 190753 [2021-06-05 14:52:32,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 160.6ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-06-05 14:52:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190753 states. [2021-06-05 14:52:44,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190753 to 159192. [2021-06-05 14:52:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159192 states, 159191 states have (on average 3.6644722377521344) internal successors, (583351), 159191 states have internal predecessors, (583351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159192 states to 159192 states and 583351 transitions. [2021-06-05 14:52:45,618 INFO L78 Accepts]: Start accepts. Automaton has 159192 states and 583351 transitions. Word has length 75 [2021-06-05 14:52:45,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:45,619 INFO L482 AbstractCegarLoop]: Abstraction has 159192 states and 583351 transitions. [2021-06-05 14:52:45,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-05 14:52:45,619 INFO L276 IsEmpty]: Start isEmpty. Operand 159192 states and 583351 transitions. [2021-06-05 14:52:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:52:45,916 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:45,916 INFO L521 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] [2021-06-05 14:52:45,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 14:52:45,916 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:52:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:45,916 INFO L82 PathProgramCache]: Analyzing trace with hash 67395163, now seen corresponding path program 7 times [2021-06-05 14:52:45,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:45,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297315708] [2021-06-05 14:52:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:46,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:46,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297315708] [2021-06-05 14:52:46,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297315708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:46,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:46,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 14:52:46,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260992160] [2021-06-05 14:52:46,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 14:52:46,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:46,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 14:52:46,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-06-05 14:52:46,138 INFO L87 Difference]: Start difference. First operand 159192 states and 583351 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) [2021-06-05 14:52:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:48,914 INFO L93 Difference]: Finished difference Result 332982 states and 1211311 transitions. [2021-06-05 14:52:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 14:52:48,914 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 [2021-06-05 14:52:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:50,300 INFO L225 Difference]: With dead ends: 332982 [2021-06-05 14:52:50,300 INFO L226 Difference]: Without dead ends: 332982 [2021-06-05 14:52:50,300 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 254.8ms TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-06-05 14:53:03,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332982 states. [2021-06-05 14:53:07,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332982 to 186349. [2021-06-05 14:53:07,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186349 states, 186348 states have (on average 3.66544851568034) internal successors, (683049), 186348 states have internal predecessors, (683049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186349 states to 186349 states and 683049 transitions. [2021-06-05 14:53:09,075 INFO L78 Accepts]: Start accepts. Automaton has 186349 states and 683049 transitions. Word has length 75 [2021-06-05 14:53:09,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:09,076 INFO L482 AbstractCegarLoop]: Abstraction has 186349 states and 683049 transitions. [2021-06-05 14:53:09,076 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) [2021-06-05 14:53:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 186349 states and 683049 transitions. [2021-06-05 14:53:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:53:09,906 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:09,906 INFO L521 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] [2021-06-05 14:53:09,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 14:53:09,906 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:53:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:09,906 INFO L82 PathProgramCache]: Analyzing trace with hash 261745055, now seen corresponding path program 8 times [2021-06-05 14:53:09,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:09,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837083410] [2021-06-05 14:53:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:10,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:10,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837083410] [2021-06-05 14:53:10,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837083410] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:10,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:10,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:53:10,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828750735] [2021-06-05 14:53:10,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:53:10,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:10,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:53:10,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:53:10,078 INFO L87 Difference]: Start difference. First operand 186349 states and 683049 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) [2021-06-05 14:53:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:11,908 INFO L93 Difference]: Finished difference Result 224238 states and 809085 transitions. [2021-06-05 14:53:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 14:53:11,912 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 14:53:11,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:12,792 INFO L225 Difference]: With dead ends: 224238 [2021-06-05 14:53:12,792 INFO L226 Difference]: Without dead ends: 222172 [2021-06-05 14:53:12,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 182.6ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-06-05 14:53:23,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222172 states. [2021-06-05 14:53:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222172 to 186766. [2021-06-05 14:53:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186766 states, 186765 states have (on average 3.661590769148395) internal successors, (683857), 186765 states have internal predecessors, (683857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186766 states to 186766 states and 683857 transitions. [2021-06-05 14:53:28,008 INFO L78 Accepts]: Start accepts. Automaton has 186766 states and 683857 transitions. Word has length 75 [2021-06-05 14:53:28,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:28,008 INFO L482 AbstractCegarLoop]: Abstraction has 186766 states and 683857 transitions. [2021-06-05 14:53:28,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-05 14:53:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 186766 states and 683857 transitions. [2021-06-05 14:53:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:53:28,373 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:28,373 INFO L521 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] [2021-06-05 14:53:28,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 14:53:28,373 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:53:28,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:28,374 INFO L82 PathProgramCache]: Analyzing trace with hash 392321083, now seen corresponding path program 9 times [2021-06-05 14:53:28,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:28,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239864459] [2021-06-05 14:53:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:28,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:28,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239864459] [2021-06-05 14:53:28,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239864459] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:28,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:28,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:53:28,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273800954] [2021-06-05 14:53:28,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:53:28,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:28,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:53:28,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:53:28,395 INFO L87 Difference]: Start difference. First operand 186766 states and 683857 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) [2021-06-05 14:53:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:29,644 INFO L93 Difference]: Finished difference Result 178837 states and 645960 transitions. [2021-06-05 14:53:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:53:29,645 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 [2021-06-05 14:53:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:30,082 INFO L225 Difference]: With dead ends: 178837 [2021-06-05 14:53:30,082 INFO L226 Difference]: Without dead ends: 178795 [2021-06-05 14:53:30,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:53:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178795 states. [2021-06-05 14:53:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178795 to 177323. [2021-06-05 14:53:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177323 states, 177322 states have (on average 3.6139001364748875) internal successors, (640824), 177322 states have internal predecessors, (640824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177323 states to 177323 states and 640824 transitions. [2021-06-05 14:53:44,256 INFO L78 Accepts]: Start accepts. Automaton has 177323 states and 640824 transitions. Word has length 75 [2021-06-05 14:53:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:44,256 INFO L482 AbstractCegarLoop]: Abstraction has 177323 states and 640824 transitions. [2021-06-05 14:53:44,256 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) [2021-06-05 14:53:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 177323 states and 640824 transitions. [2021-06-05 14:53:44,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:53:44,588 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:44,588 INFO L521 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] [2021-06-05 14:53:44,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 14:53:44,589 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:53:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:44,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1448657563, now seen corresponding path program 10 times [2021-06-05 14:53:44,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:44,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439071356] [2021-06-05 14:53:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:44,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:44,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439071356] [2021-06-05 14:53:44,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439071356] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:44,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:44,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 14:53:44,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584323249] [2021-06-05 14:53:44,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 14:53:44,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:44,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 14:53:44,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-06-05 14:53:44,778 INFO L87 Difference]: Start difference. First operand 177323 states and 640824 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) [2021-06-05 14:53:45,910 WARN L205 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2021-06-05 14:53:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:47,573 INFO L93 Difference]: Finished difference Result 301437 states and 1083094 transitions. [2021-06-05 14:53:47,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 14:53:47,573 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 [2021-06-05 14:53:47,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:48,349 INFO L225 Difference]: With dead ends: 301437 [2021-06-05 14:53:48,349 INFO L226 Difference]: Without dead ends: 300668 [2021-06-05 14:53:48,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 817.2ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-06-05 14:54:01,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300668 states. [2021-06-05 14:54:05,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300668 to 193029. [2021-06-05 14:54:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193029 states, 193028 states have (on average 3.624137430839049) internal successors, (699560), 193028 states have internal predecessors, (699560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193029 states to 193029 states and 699560 transitions. [2021-06-05 14:54:05,769 INFO L78 Accepts]: Start accepts. Automaton has 193029 states and 699560 transitions. Word has length 75 [2021-06-05 14:54:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:05,769 INFO L482 AbstractCegarLoop]: Abstraction has 193029 states and 699560 transitions. [2021-06-05 14:54:05,770 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) [2021-06-05 14:54:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 193029 states and 699560 transitions. [2021-06-05 14:54:06,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:54:06,749 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:06,749 INFO L521 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] [2021-06-05 14:54:06,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 14:54:06,749 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:54:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:06,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1860346947, now seen corresponding path program 11 times [2021-06-05 14:54:06,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:06,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394268724] [2021-06-05 14:54:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:06,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:06,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394268724] [2021-06-05 14:54:06,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394268724] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:06,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:06,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:54:06,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076024877] [2021-06-05 14:54:06,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:54:06,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:06,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:54:06,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:54:06,838 INFO L87 Difference]: Start difference. First operand 193029 states and 699560 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) [2021-06-05 14:54:11,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:11,101 INFO L93 Difference]: Finished difference Result 654848 states and 2399353 transitions. [2021-06-05 14:54:11,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 14:54:11,102 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 [2021-06-05 14:54:11,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:14,140 INFO L225 Difference]: With dead ends: 654848 [2021-06-05 14:54:14,141 INFO L226 Difference]: Without dead ends: 653561 [2021-06-05 14:54:14,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 139.1ms TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-06-05 14:54:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653561 states. [2021-06-05 14:54:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653561 to 220211. [2021-06-05 14:54:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220211 states, 220210 states have (on average 3.6167294854911223) internal successors, (796440), 220210 states have internal predecessors, (796440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220211 states to 220211 states and 796440 transitions. [2021-06-05 14:54:44,778 INFO L78 Accepts]: Start accepts. Automaton has 220211 states and 796440 transitions. Word has length 75 [2021-06-05 14:54:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:44,778 INFO L482 AbstractCegarLoop]: Abstraction has 220211 states and 796440 transitions. [2021-06-05 14:54:44,778 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) [2021-06-05 14:54:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 220211 states and 796440 transitions. [2021-06-05 14:54:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:54:45,213 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:45,213 INFO L521 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] [2021-06-05 14:54:45,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 14:54:45,214 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:54:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:45,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1523420445, now seen corresponding path program 12 times [2021-06-05 14:54:45,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:45,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430021927] [2021-06-05 14:54:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:45,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:45,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430021927] [2021-06-05 14:54:45,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430021927] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:45,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:45,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:54:45,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156282317] [2021-06-05 14:54:45,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:54:45,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:45,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:54:45,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:54:45,296 INFO L87 Difference]: Start difference. First operand 220211 states and 796440 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) [2021-06-05 14:54:46,072 WARN L205 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2021-06-05 14:54:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:49,044 INFO L93 Difference]: Finished difference Result 484911 states and 1767616 transitions. [2021-06-05 14:54:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 14:54:49,044 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 14:54:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:50,299 INFO L225 Difference]: With dead ends: 484911 [2021-06-05 14:54:50,299 INFO L226 Difference]: Without dead ends: 484755 [2021-06-05 14:54:50,300 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 756.5ms TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-06-05 14:55:09,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484755 states. [2021-06-05 14:55:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484755 to 238155. [2021-06-05 14:55:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238155 states, 238154 states have (on average 3.6230170393946772) internal successors, (862836), 238154 states have internal predecessors, (862836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238155 states to 238155 states and 862836 transitions. [2021-06-05 14:55:15,384 INFO L78 Accepts]: Start accepts. Automaton has 238155 states and 862836 transitions. Word has length 75 [2021-06-05 14:55:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:15,384 INFO L482 AbstractCegarLoop]: Abstraction has 238155 states and 862836 transitions. [2021-06-05 14:55:15,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-05 14:55:15,384 INFO L276 IsEmpty]: Start isEmpty. Operand 238155 states and 862836 transitions. [2021-06-05 14:55:16,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:55:16,386 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:16,386 INFO L521 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] [2021-06-05 14:55:16,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 14:55:16,387 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:16,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:16,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1871069443, now seen corresponding path program 13 times [2021-06-05 14:55:16,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:16,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130693771] [2021-06-05 14:55:16,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:16,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:16,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130693771] [2021-06-05 14:55:16,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130693771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:16,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:16,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:55:16,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452481992] [2021-06-05 14:55:16,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:55:16,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:16,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:55:16,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:55:16,464 INFO L87 Difference]: Start difference. First operand 238155 states and 862836 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) [2021-06-05 14:55:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:19,702 INFO L93 Difference]: Finished difference Result 501095 states and 1825900 transitions. [2021-06-05 14:55:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 14:55:19,703 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 14:55:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:21,614 INFO L225 Difference]: With dead ends: 501095 [2021-06-05 14:55:21,614 INFO L226 Difference]: Without dead ends: 499860 [2021-06-05 14:55:21,614 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 144.8ms TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-06-05 14:55:41,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499860 states. [2021-06-05 14:55:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499860 to 222826. [2021-06-05 14:55:47,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222826 states, 222825 states have (on average 3.6172063278357456) internal successors, (806004), 222825 states have internal predecessors, (806004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222826 states to 222826 states and 806004 transitions. [2021-06-05 14:55:48,078 INFO L78 Accepts]: Start accepts. Automaton has 222826 states and 806004 transitions. Word has length 75 [2021-06-05 14:55:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:48,078 INFO L482 AbstractCegarLoop]: Abstraction has 222826 states and 806004 transitions. [2021-06-05 14:55:48,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-05 14:55:48,078 INFO L276 IsEmpty]: Start isEmpty. Operand 222826 states and 806004 transitions. [2021-06-05 14:55:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:55:49,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:49,266 INFO L521 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] [2021-06-05 14:55:49,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 14:55:49,267 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:49,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:49,267 INFO L82 PathProgramCache]: Analyzing trace with hash -489807043, now seen corresponding path program 14 times [2021-06-05 14:55:49,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:49,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660006547] [2021-06-05 14:55:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:49,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:49,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660006547] [2021-06-05 14:55:49,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660006547] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:49,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:49,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:55:49,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968302430] [2021-06-05 14:55:49,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:55:49,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:49,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:55:49,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:55:49,392 INFO L87 Difference]: Start difference. First operand 222826 states and 806004 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) [2021-06-05 14:55:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:52,613 INFO L93 Difference]: Finished difference Result 433993 states and 1573268 transitions. [2021-06-05 14:55:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 14:55:52,614 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 14:55:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:54,512 INFO L225 Difference]: With dead ends: 433993 [2021-06-05 14:55:54,512 INFO L226 Difference]: Without dead ends: 432650 [2021-06-05 14:55:54,513 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 180.1ms TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-06-05 14:56:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432650 states. [2021-06-05 14:56:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432650 to 207018. [2021-06-05 14:56:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207018 states, 207017 states have (on average 3.6110995715327725) internal successors, (747559), 207017 states have internal predecessors, (747559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207018 states to 207018 states and 747559 transitions. [2021-06-05 14:56:17,924 INFO L78 Accepts]: Start accepts. Automaton has 207018 states and 747559 transitions. Word has length 75 [2021-06-05 14:56:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:17,924 INFO L482 AbstractCegarLoop]: Abstraction has 207018 states and 747559 transitions. [2021-06-05 14:56:17,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-05 14:56:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 207018 states and 747559 transitions. [2021-06-05 14:56:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:56:18,348 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:18,348 INFO L521 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] [2021-06-05 14:56:18,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 14:56:18,349 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:56:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:18,349 INFO L82 PathProgramCache]: Analyzing trace with hash 410670365, now seen corresponding path program 15 times [2021-06-05 14:56:18,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:18,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281617457] [2021-06-05 14:56:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:18,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:18,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281617457] [2021-06-05 14:56:18,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281617457] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:18,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:18,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:56:18,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014464847] [2021-06-05 14:56:18,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:56:18,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:18,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:56:18,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:56:18,422 INFO L87 Difference]: Start difference. First operand 207018 states and 747559 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) [2021-06-05 14:56:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:21,055 INFO L93 Difference]: Finished difference Result 369076 states and 1335939 transitions. [2021-06-05 14:56:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 14:56:21,056 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 14:56:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:21,994 INFO L225 Difference]: With dead ends: 369076 [2021-06-05 14:56:21,994 INFO L226 Difference]: Without dead ends: 367708 [2021-06-05 14:56:21,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-06-05 14:56:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367708 states. [2021-06-05 14:56:40,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367708 to 172048. [2021-06-05 14:56:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172048 states, 172047 states have (on average 3.5901933773910617) internal successors, (617682), 172047 states have internal predecessors, (617682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172048 states to 172048 states and 617682 transitions. [2021-06-05 14:56:42,172 INFO L78 Accepts]: Start accepts. Automaton has 172048 states and 617682 transitions. Word has length 75 [2021-06-05 14:56:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:42,172 INFO L482 AbstractCegarLoop]: Abstraction has 172048 states and 617682 transitions. [2021-06-05 14:56:42,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-05 14:56:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 172048 states and 617682 transitions. [2021-06-05 14:56:42,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:56:42,497 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:42,498 INFO L521 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] [2021-06-05 14:56:42,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 14:56:42,498 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:56:42,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:42,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1200968973, now seen corresponding path program 16 times [2021-06-05 14:56:42,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:42,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348454020] [2021-06-05 14:56:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:42,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:42,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348454020] [2021-06-05 14:56:42,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348454020] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:42,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:42,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:56:42,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235173105] [2021-06-05 14:56:42,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:56:42,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:42,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:56:42,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:56:42,570 INFO L87 Difference]: Start difference. First operand 172048 states and 617682 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) [2021-06-05 14:56:45,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:45,872 INFO L93 Difference]: Finished difference Result 452413 states and 1622907 transitions. [2021-06-05 14:56:45,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 14:56:45,872 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 14:56:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:47,794 INFO L225 Difference]: With dead ends: 452413 [2021-06-05 14:56:47,794 INFO L226 Difference]: Without dead ends: 452034 [2021-06-05 14:56:47,794 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:57:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452034 states. [2021-06-05 14:57:09,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452034 to 184443. [2021-06-05 14:57:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184443 states, 184442 states have (on average 3.591210244955054) internal successors, (662370), 184442 states have internal predecessors, (662370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184443 states to 184443 states and 662370 transitions. [2021-06-05 14:57:09,896 INFO L78 Accepts]: Start accepts. Automaton has 184443 states and 662370 transitions. Word has length 75 [2021-06-05 14:57:09,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:09,896 INFO L482 AbstractCegarLoop]: Abstraction has 184443 states and 662370 transitions. [2021-06-05 14:57:09,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-05 14:57:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 184443 states and 662370 transitions. [2021-06-05 14:57:10,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:57:10,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:10,233 INFO L521 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] [2021-06-05 14:57:10,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 14:57:10,233 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:57:10,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:10,234 INFO L82 PathProgramCache]: Analyzing trace with hash 859844631, now seen corresponding path program 17 times [2021-06-05 14:57:10,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:10,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161409828] [2021-06-05 14:57:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:10,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:10,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161409828] [2021-06-05 14:57:10,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161409828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:10,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:10,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:57:10,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429817502] [2021-06-05 14:57:10,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:57:10,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:10,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:57:10,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:57:10,318 INFO L87 Difference]: Start difference. First operand 184443 states and 662370 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) [2021-06-05 14:57:12,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:12,894 INFO L93 Difference]: Finished difference Result 372669 states and 1333487 transitions. [2021-06-05 14:57:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 14:57:12,894 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 14:57:12,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:14,305 INFO L225 Difference]: With dead ends: 372669 [2021-06-05 14:57:14,305 INFO L226 Difference]: Without dead ends: 372424 [2021-06-05 14:57:14,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-06-05 14:57:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372424 states. [2021-06-05 14:57:32,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372424 to 183731. [2021-06-05 14:57:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183731 states, 183730 states have (on average 3.5906112229902574) internal successors, (659703), 183730 states have internal predecessors, (659703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183731 states to 183731 states and 659703 transitions. [2021-06-05 14:57:34,041 INFO L78 Accepts]: Start accepts. Automaton has 183731 states and 659703 transitions. Word has length 75 [2021-06-05 14:57:34,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:34,041 INFO L482 AbstractCegarLoop]: Abstraction has 183731 states and 659703 transitions. [2021-06-05 14:57:34,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-05 14:57:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand 183731 states and 659703 transitions. [2021-06-05 14:57:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:57:34,396 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:34,397 INFO L521 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] [2021-06-05 14:57:34,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 14:57:34,397 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:57:34,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:34,397 INFO L82 PathProgramCache]: Analyzing trace with hash -604267675, now seen corresponding path program 18 times [2021-06-05 14:57:34,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:34,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333576293] [2021-06-05 14:57:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:34,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:34,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333576293] [2021-06-05 14:57:34,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333576293] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:34,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:34,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:57:34,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732940829] [2021-06-05 14:57:34,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:57:34,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:34,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:57:34,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:57:34,509 INFO L87 Difference]: Start difference. First operand 183731 states and 659703 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) [2021-06-05 14:57:36,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:36,188 INFO L93 Difference]: Finished difference Result 199112 states and 710504 transitions. [2021-06-05 14:57:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 14:57:36,188 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 [2021-06-05 14:57:36,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:36,684 INFO L225 Difference]: With dead ends: 199112 [2021-06-05 14:57:36,684 INFO L226 Difference]: Without dead ends: 196783 [2021-06-05 14:57:36,684 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 181.1ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:57:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196783 states. [2021-06-05 14:57:49,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196783 to 193531. [2021-06-05 14:57:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193531 states, 193530 states have (on average 3.5799255929313283) internal successors, (692823), 193530 states have internal predecessors, (692823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193531 states to 193531 states and 692823 transitions. [2021-06-05 14:57:50,885 INFO L78 Accepts]: Start accepts. Automaton has 193531 states and 692823 transitions. Word has length 75 [2021-06-05 14:57:50,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:50,885 INFO L482 AbstractCegarLoop]: Abstraction has 193531 states and 692823 transitions. [2021-06-05 14:57:50,885 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) [2021-06-05 14:57:50,885 INFO L276 IsEmpty]: Start isEmpty. Operand 193531 states and 692823 transitions. [2021-06-05 14:57:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:57:51,257 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:51,257 INFO L521 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] [2021-06-05 14:57:51,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 14:57:51,257 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:57:51,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:51,257 INFO L82 PathProgramCache]: Analyzing trace with hash 2086877239, now seen corresponding path program 19 times [2021-06-05 14:57:51,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:51,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814981342] [2021-06-05 14:57:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:51,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:51,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814981342] [2021-06-05 14:57:51,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814981342] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:51,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:51,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 14:57:51,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145550302] [2021-06-05 14:57:51,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 14:57:51,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:51,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 14:57:51,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-06-05 14:57:51,531 INFO L87 Difference]: Start difference. First operand 193531 states and 692823 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 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) [2021-06-05 14:57:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:53,884 INFO L93 Difference]: Finished difference Result 315638 states and 1109432 transitions. [2021-06-05 14:57:53,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 14:57:53,885 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 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 [2021-06-05 14:57:53,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:54,672 INFO L225 Difference]: With dead ends: 315638 [2021-06-05 14:57:54,672 INFO L226 Difference]: Without dead ends: 299217 [2021-06-05 14:57:54,672 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 298.8ms TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-06-05 14:58:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299217 states. [2021-06-05 14:58:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299217 to 246599. [2021-06-05 14:58:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246599 states, 246598 states have (on average 3.5487027469809163) internal successors, (875103), 246598 states have internal predecessors, (875103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246599 states to 246599 states and 875103 transitions. [2021-06-05 14:58:12,417 INFO L78 Accepts]: Start accepts. Automaton has 246599 states and 875103 transitions. Word has length 75 [2021-06-05 14:58:12,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:12,419 INFO L482 AbstractCegarLoop]: Abstraction has 246599 states and 875103 transitions. [2021-06-05 14:58:12,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 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) [2021-06-05 14:58:12,419 INFO L276 IsEmpty]: Start isEmpty. Operand 246599 states and 875103 transitions. [2021-06-05 14:58:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:58:13,120 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:13,120 INFO L521 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] [2021-06-05 14:58:13,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 14:58:13,122 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:58:13,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:13,122 INFO L82 PathProgramCache]: Analyzing trace with hash 114542167, now seen corresponding path program 20 times [2021-06-05 14:58:13,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:13,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862138446] [2021-06-05 14:58:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:13,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:13,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862138446] [2021-06-05 14:58:13,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862138446] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:13,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:13,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 14:58:13,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844454913] [2021-06-05 14:58:13,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 14:58:13,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:13,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 14:58:13,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 14:58:13,297 INFO L87 Difference]: Start difference. First operand 246599 states and 875103 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) [2021-06-05 14:58:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:18,137 INFO L93 Difference]: Finished difference Result 615354 states and 2149380 transitions. [2021-06-05 14:58:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 14:58:18,137 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 [2021-06-05 14:58:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:20,695 INFO L225 Difference]: With dead ends: 615354 [2021-06-05 14:58:20,695 INFO L226 Difference]: Without dead ends: 583898 [2021-06-05 14:58:20,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 420.9ms TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 14:58:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583898 states. [2021-06-05 14:58:46,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583898 to 289469. [2021-06-05 14:58:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289469 states, 289468 states have (on average 3.552855583346) internal successors, (1028438), 289468 states have internal predecessors, (1028438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:47,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289469 states to 289469 states and 1028438 transitions. [2021-06-05 14:58:47,797 INFO L78 Accepts]: Start accepts. Automaton has 289469 states and 1028438 transitions. Word has length 75 [2021-06-05 14:58:47,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:47,797 INFO L482 AbstractCegarLoop]: Abstraction has 289469 states and 1028438 transitions. [2021-06-05 14:58:47,797 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) [2021-06-05 14:58:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 289469 states and 1028438 transitions. [2021-06-05 14:58:48,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:58:48,373 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:48,373 INFO L521 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] [2021-06-05 14:58:48,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 14:58:48,373 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:58:48,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:48,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1886350067, now seen corresponding path program 21 times [2021-06-05 14:58:48,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:48,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304761138] [2021-06-05 14:58:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:48,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:48,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304761138] [2021-06-05 14:58:48,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304761138] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:48,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:48,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:58:48,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477305585] [2021-06-05 14:58:48,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:58:48,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:48,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:58:48,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:58:48,502 INFO L87 Difference]: Start difference. First operand 289469 states and 1028438 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) [2021-06-05 14:58:50,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:50,780 INFO L93 Difference]: Finished difference Result 317158 states and 1117415 transitions. [2021-06-05 14:58:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 14:58:50,780 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 14:58:50,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:51,553 INFO L225 Difference]: With dead ends: 317158 [2021-06-05 14:58:51,553 INFO L226 Difference]: Without dead ends: 316410 [2021-06-05 14:58:51,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:59:04,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316410 states. [2021-06-05 14:59:08,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316410 to 286773. [2021-06-05 14:59:09,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286773 states, 286772 states have (on average 3.5524981518418812) internal successors, (1018757), 286772 states have internal predecessors, (1018757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286773 states to 286773 states and 1018757 transitions. [2021-06-05 14:59:10,436 INFO L78 Accepts]: Start accepts. Automaton has 286773 states and 1018757 transitions. Word has length 75 [2021-06-05 14:59:10,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:10,436 INFO L482 AbstractCegarLoop]: Abstraction has 286773 states and 1018757 transitions. [2021-06-05 14:59:10,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-05 14:59:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand 286773 states and 1018757 transitions. [2021-06-05 14:59:11,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:59:11,442 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:11,442 INFO L521 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] [2021-06-05 14:59:11,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 14:59:11,442 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:59:11,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:11,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1370146751, now seen corresponding path program 22 times [2021-06-05 14:59:11,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:11,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144643829] [2021-06-05 14:59:11,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:11,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:11,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144643829] [2021-06-05 14:59:11,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144643829] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:11,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:11,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:59:11,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145202006] [2021-06-05 14:59:11,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:59:11,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:11,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:59:11,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:59:11,484 INFO L87 Difference]: Start difference. First operand 286773 states and 1018757 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) [2021-06-05 14:59:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:13,182 INFO L93 Difference]: Finished difference Result 272572 states and 949197 transitions. [2021-06-05 14:59:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:59:13,183 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 [2021-06-05 14:59:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:14,242 INFO L225 Difference]: With dead ends: 272572 [2021-06-05 14:59:14,242 INFO L226 Difference]: Without dead ends: 272572 [2021-06-05 14:59:14,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:59:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272572 states. [2021-06-05 14:59:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272572 to 272512. [2021-06-05 14:59:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272512 states, 272511 states have (on average 3.4823805277585125) internal successors, (948987), 272511 states have internal predecessors, (948987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272512 states to 272512 states and 948987 transitions. [2021-06-05 14:59:31,497 INFO L78 Accepts]: Start accepts. Automaton has 272512 states and 948987 transitions. Word has length 75 [2021-06-05 14:59:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:31,497 INFO L482 AbstractCegarLoop]: Abstraction has 272512 states and 948987 transitions. [2021-06-05 14:59:31,497 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) [2021-06-05 14:59:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 272512 states and 948987 transitions. [2021-06-05 14:59:31,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:59:31,985 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:31,985 INFO L521 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] [2021-06-05 14:59:31,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 14:59:31,985 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:59:31,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:31,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1130103073, now seen corresponding path program 23 times [2021-06-05 14:59:31,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:31,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148227498] [2021-06-05 14:59:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:32,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:32,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148227498] [2021-06-05 14:59:32,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148227498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:32,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:32,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 14:59:32,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866988703] [2021-06-05 14:59:32,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 14:59:32,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:32,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 14:59:32,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:59:32,165 INFO L87 Difference]: Start difference. First operand 272512 states and 948987 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 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) [2021-06-05 14:59:33,098 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2021-06-05 14:59:34,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:34,801 INFO L93 Difference]: Finished difference Result 322096 states and 1116136 transitions. [2021-06-05 14:59:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 14:59:34,802 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 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 [2021-06-05 14:59:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:35,487 INFO L225 Difference]: With dead ends: 322096 [2021-06-05 14:59:35,487 INFO L226 Difference]: Without dead ends: 321712 [2021-06-05 14:59:35,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 758.1ms TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-06-05 14:59:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321712 states. [2021-06-05 14:59:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321712 to 292852. [2021-06-05 14:59:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292852 states, 292851 states have (on average 3.4696005818658637) internal successors, (1016076), 292851 states have internal predecessors, (1016076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:53,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292852 states to 292852 states and 1016076 transitions. [2021-06-05 14:59:53,879 INFO L78 Accepts]: Start accepts. Automaton has 292852 states and 1016076 transitions. Word has length 75 [2021-06-05 14:59:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:53,880 INFO L482 AbstractCegarLoop]: Abstraction has 292852 states and 1016076 transitions. [2021-06-05 14:59:53,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 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) [2021-06-05 14:59:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 292852 states and 1016076 transitions. [2021-06-05 14:59:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 14:59:54,405 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:54,405 INFO L521 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] [2021-06-05 14:59:54,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 14:59:54,405 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:59:54,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:54,406 INFO L82 PathProgramCache]: Analyzing trace with hash 532907179, now seen corresponding path program 24 times [2021-06-05 14:59:54,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:54,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984900228] [2021-06-05 14:59:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:54,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:54,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984900228] [2021-06-05 14:59:54,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984900228] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:54,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:54,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:59:54,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113204957] [2021-06-05 14:59:54,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:59:54,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:54,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:59:54,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:59:54,467 INFO L87 Difference]: Start difference. First operand 292852 states and 1016076 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) [2021-06-05 14:59:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:56,679 INFO L93 Difference]: Finished difference Result 324280 states and 1118552 transitions. [2021-06-05 14:59:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 14:59:56,679 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 14:59:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:57,356 INFO L225 Difference]: With dead ends: 324280 [2021-06-05 14:59:57,356 INFO L226 Difference]: Without dead ends: 320319 [2021-06-05 14:59:57,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 141.1ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-06-05 15:00:10,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320319 states. [2021-06-05 15:00:14,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320319 to 290527. [2021-06-05 15:00:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290527 states, 290526 states have (on average 3.4699923586873465) internal successors, (1008123), 290526 states have internal predecessors, (1008123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290527 states to 290527 states and 1008123 transitions. [2021-06-05 15:00:16,311 INFO L78 Accepts]: Start accepts. Automaton has 290527 states and 1008123 transitions. Word has length 75 [2021-06-05 15:00:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:16,311 INFO L482 AbstractCegarLoop]: Abstraction has 290527 states and 1008123 transitions. [2021-06-05 15:00:16,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-05 15:00:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 290527 states and 1008123 transitions. [2021-06-05 15:00:16,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 15:00:16,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:16,866 INFO L521 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] [2021-06-05 15:00:16,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 15:00:16,866 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 15:00:16,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:16,867 INFO L82 PathProgramCache]: Analyzing trace with hash 58243295, now seen corresponding path program 25 times [2021-06-05 15:00:16,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:16,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022658041] [2021-06-05 15:00:16,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:17,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:17,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022658041] [2021-06-05 15:00:17,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022658041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:17,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:17,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 15:00:17,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87030788] [2021-06-05 15:00:17,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 15:00:17,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:17,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 15:00:17,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 15:00:17,058 INFO L87 Difference]: Start difference. First operand 290527 states and 1008123 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) [2021-06-05 15:00:19,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:19,533 INFO L93 Difference]: Finished difference Result 305493 states and 1055715 transitions. [2021-06-05 15:00:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 15:00:19,549 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 [2021-06-05 15:00:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:20,276 INFO L225 Difference]: With dead ends: 305493 [2021-06-05 15:00:20,276 INFO L226 Difference]: Without dead ends: 305493 [2021-06-05 15:00:20,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 230.0ms TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-06-05 15:00:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305493 states. [2021-06-05 15:00:36,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305493 to 297949. [2021-06-05 15:00:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297949 states, 297948 states have (on average 3.4605837260193053) internal successors, (1031074), 297948 states have internal predecessors, (1031074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297949 states to 297949 states and 1031074 transitions. [2021-06-05 15:00:38,555 INFO L78 Accepts]: Start accepts. Automaton has 297949 states and 1031074 transitions. Word has length 75 [2021-06-05 15:00:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:38,555 INFO L482 AbstractCegarLoop]: Abstraction has 297949 states and 1031074 transitions. [2021-06-05 15:00:38,555 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) [2021-06-05 15:00:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 297949 states and 1031074 transitions. [2021-06-05 15:00:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 15:00:39,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:39,756 INFO L521 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] [2021-06-05 15:00:39,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 15:00:39,756 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 15:00:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:39,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1792079649, now seen corresponding path program 26 times [2021-06-05 15:00:39,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:39,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646466677] [2021-06-05 15:00:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:40,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:40,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646466677] [2021-06-05 15:00:40,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646466677] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:40,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:40,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 15:00:40,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816208317] [2021-06-05 15:00:40,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 15:00:40,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 15:00:40,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-06-05 15:00:40,272 INFO L87 Difference]: Start difference. First operand 297949 states and 1031074 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 19 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) [2021-06-05 15:00:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:44,768 INFO L93 Difference]: Finished difference Result 452515 states and 1558723 transitions. [2021-06-05 15:00:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 15:00:44,769 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 19 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 [2021-06-05 15:00:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:46,394 INFO L225 Difference]: With dead ends: 452515 [2021-06-05 15:00:46,394 INFO L226 Difference]: Without dead ends: 452515 [2021-06-05 15:00:46,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1357.7ms TimeCoverageRelationStatistics Valid=392, Invalid=1588, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 15:01:02,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452515 states. [2021-06-05 15:01:09,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452515 to 358870. [2021-06-05 15:01:09,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358870 states, 358869 states have (on average 3.453655790831752) internal successors, (1239410), 358869 states have internal predecessors, (1239410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358870 states to 358870 states and 1239410 transitions. [2021-06-05 15:01:11,443 INFO L78 Accepts]: Start accepts. Automaton has 358870 states and 1239410 transitions. Word has length 75 [2021-06-05 15:01:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:11,443 INFO L482 AbstractCegarLoop]: Abstraction has 358870 states and 1239410 transitions. [2021-06-05 15:01:11,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 19 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) [2021-06-05 15:01:11,444 INFO L276 IsEmpty]: Start isEmpty. Operand 358870 states and 1239410 transitions. [2021-06-05 15:01:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 15:01:12,835 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:12,844 INFO L521 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] [2021-06-05 15:01:12,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 15:01:12,844 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 15:01:12,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:12,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1165227997, now seen corresponding path program 27 times [2021-06-05 15:01:12,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:12,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645456024] [2021-06-05 15:01:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:13,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:13,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645456024] [2021-06-05 15:01:13,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645456024] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:13,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:13,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 15:01:13,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255219917] [2021-06-05 15:01:13,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 15:01:13,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:13,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 15:01:13,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-06-05 15:01:13,102 INFO L87 Difference]: Start difference. First operand 358870 states and 1239410 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) [2021-06-05 15:01:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:16,538 INFO L93 Difference]: Finished difference Result 387876 states and 1335634 transitions. [2021-06-05 15:01:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 15:01:16,539 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 [2021-06-05 15:01:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:17,906 INFO L225 Difference]: With dead ends: 387876 [2021-06-05 15:01:17,906 INFO L226 Difference]: Without dead ends: 386312 [2021-06-05 15:01:17,906 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 165.2ms TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-06-05 15:01:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386312 states. [2021-06-05 15:01:38,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386312 to 359094. [2021-06-05 15:01:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359094 states, 359093 states have (on average 3.4535454603682054) internal successors, (1240144), 359093 states have internal predecessors, (1240144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359094 states to 359094 states and 1240144 transitions. [2021-06-05 15:01:40,063 INFO L78 Accepts]: Start accepts. Automaton has 359094 states and 1240144 transitions. Word has length 75 [2021-06-05 15:01:40,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:40,063 INFO L482 AbstractCegarLoop]: Abstraction has 359094 states and 1240144 transitions. [2021-06-05 15:01:40,063 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) [2021-06-05 15:01:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 359094 states and 1240144 transitions. [2021-06-05 15:01:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 15:01:40,749 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:40,749 INFO L521 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] [2021-06-05 15:01:40,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 15:01:40,750 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 15:01:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:40,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1052728899, now seen corresponding path program 28 times [2021-06-05 15:01:40,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:40,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739065413] [2021-06-05 15:01:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:40,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:40,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739065413] [2021-06-05 15:01:40,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739065413] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:40,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:40,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-05 15:01:40,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325277688] [2021-06-05 15:01:40,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 15:01:40,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:40,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 15:01:40,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 15:01:40,913 INFO L87 Difference]: Start difference. First operand 359094 states and 1240144 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) [2021-06-05 15:01:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:44,021 INFO L93 Difference]: Finished difference Result 394065 states and 1352619 transitions. [2021-06-05 15:01:44,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 15:01:44,022 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 [2021-06-05 15:01:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:45,374 INFO L225 Difference]: With dead ends: 394065 [2021-06-05 15:01:45,375 INFO L226 Difference]: Without dead ends: 392967 [2021-06-05 15:01:45,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 296.0ms TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-06-05 15:02:00,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392967 states. [2021-06-05 15:02:05,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392967 to 360156. [2021-06-05 15:02:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360156 states, 360155 states have (on average 3.4484263719787314) internal successors, (1241968), 360155 states have internal predecessors, (1241968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360156 states to 360156 states and 1241968 transitions. [2021-06-05 15:02:07,459 INFO L78 Accepts]: Start accepts. Automaton has 360156 states and 1241968 transitions. Word has length 75 [2021-06-05 15:02:07,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:02:07,459 INFO L482 AbstractCegarLoop]: Abstraction has 360156 states and 1241968 transitions. [2021-06-05 15:02:07,459 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) [2021-06-05 15:02:07,459 INFO L276 IsEmpty]: Start isEmpty. Operand 360156 states and 1241968 transitions. [2021-06-05 15:02:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-06-05 15:02:08,855 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:02:08,855 INFO L521 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] [2021-06-05 15:02:08,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 15:02:08,855 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 15:02:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:02:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2097199113, now seen corresponding path program 29 times [2021-06-05 15:02:08,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:02:08,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168087802] [2021-06-05 15:02:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:02:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:02:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:02:08,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:02:08,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168087802] [2021-06-05 15:02:08,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168087802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:02:08,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:02:08,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 15:02:08,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954199204] [2021-06-05 15:02:08,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 15:02:08,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:02:08,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 15:02:08,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-06-05 15:02:08,956 INFO L87 Difference]: Start difference. First operand 360156 states and 1241968 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) [2021-06-05 15:02:11,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:02:11,939 INFO L93 Difference]: Finished difference Result 399669 states and 1371420 transitions. [2021-06-05 15:02:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 15:02:11,939 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 75 [2021-06-05 15:02:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:02:13,547 INFO L225 Difference]: With dead ends: 399669 [2021-06-05 15:02:13,547 INFO L226 Difference]: Without dead ends: 395812 [2021-06-05 15:02:13,549 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 188.2ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-06-05 15:02:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395812 states. Received shutdown request... [2021-06-05 15:02:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395812 to 363309. [2021-06-05 15:02:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363309 states, 363308 states have (on average 3.447336695035617) internal successors, (1252445), 363308 states have internal predecessors, (1252445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:33,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 15:02:33,831 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 15:02:33,833 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 15:02:33,836 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 15:02:33,836 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:02:33 BasicIcfg [2021-06-05 15:02:33,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 15:02:33,836 INFO L168 Benchmark]: Toolchain (without parser) took 696257.67 ms. Allocated memory was 346.0 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 325.3 MB in the beginning and 10.6 GB in the end (delta: -10.3 GB). Peak memory consumption was 9.4 GB. Max. memory is 16.0 GB. [2021-06-05 15:02:33,836 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 346.0 MB. Free memory is still 326.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 15:02:33,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.88 ms. Allocated memory is still 346.0 MB. Free memory was 325.2 MB in the beginning and 323.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 15:02:33,837 INFO L168 Benchmark]: Boogie Preprocessor took 11.02 ms. Allocated memory is still 346.0 MB. Free memory was 323.7 MB in the beginning and 322.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 15:02:33,837 INFO L168 Benchmark]: RCFGBuilder took 245.13 ms. Allocated memory is still 346.0 MB. Free memory was 322.6 MB in the beginning and 305.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 15:02:33,837 INFO L168 Benchmark]: TraceAbstraction took 695971.38 ms. Allocated memory was 346.0 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 304.7 MB in the beginning and 10.6 GB in the end (delta: -10.3 GB). Peak memory consumption was 9.4 GB. Max. memory is 16.0 GB. [2021-06-05 15:02:33,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 346.0 MB. Free memory is still 326.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.88 ms. Allocated memory is still 346.0 MB. Free memory was 325.2 MB in the beginning and 323.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.02 ms. Allocated memory is still 346.0 MB. Free memory was 323.7 MB in the beginning and 322.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 245.13 ms. Allocated memory is still 346.0 MB. Free memory was 322.6 MB in the beginning and 305.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 695971.38 ms. Allocated memory was 346.0 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 304.7 MB in the beginning and 10.6 GB in the end (delta: -10.3 GB). Peak memory consumption was 9.4 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 154 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 695884.3ms, OverallIterations: 29, TraceHistogramMax: 1, EmptinessCheckTime: 17328.4ms, AutomataDifference: 109453.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14341.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5808 SDtfs, 15699 SDslu, 28245 SDs, 0 SdLazy, 18854 SolverSat, 3968 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9900.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 583 GetRequests, 55 SyntacticMatches, 25 SemanticMatches, 503 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 8252.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=360156occurred in iteration=28, InterpolantAutomatonStates: 469, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 550343.0ms AutomataMinimizationTime, 29 MinimizatonAttempts, 3048279 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 65.2ms SsaConstructionTime, 399.8ms SatisfiabilityAnalysisTime, 3667.7ms InterpolantComputationTime, 2175 NumberOfCodeBlocks, 2175 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 2146 ConstructedInterpolants, 0 QuantifiedInterpolants, 13925 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown