/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.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-770125f [2021-05-21 20:49:53,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 20:49:53,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 20:49:53,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 20:49:54,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 20:49:54,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 20:49:54,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 20:49:54,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-05-21 20:49:54,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 20:49:54,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 20:49:54,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 20:49:54,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 20:49:54,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 20:49:54,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 20:49:54,049 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 20:49:54,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 20:49:54,049 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 20:49:54,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 20:49:54,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 20:49:54,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 20:49:54,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 20:49:54,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 20:49:54,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 20:49:54,051 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 20:49:54,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 20:49:54,051 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 20:49:54,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 20:49:54,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 20:49:54,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 20:49:54,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 20:49:54,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 20:49:54,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 20:49:54,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 20:49:54,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 20:49:54,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 20:49:54,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 20:49:54,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 20:49:54,053 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 20:49:54,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 20:49:54,054 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 20:49:54,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 20:49:54,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 20:49:54,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 20:49:54,401 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-21 20:49:54,402 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-21 20:49:54,403 INFO L432 ainManager$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 [2021-05-21 20:49:54,403 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl' [2021-05-21 20:49:54,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 20:49:54,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-21 20:49:54,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 20:49:54,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 20:49:54,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 20:49:54,472 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 21.05 08:49:54" (1/1) ... [2021-05-21 20:49:54,491 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 21.05 08:49:54" (1/1) ... [2021-05-21 20:49:54,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 20:49:54,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 20:49:54,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 20:49:54,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 20:49:54,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:49:54" (1/1) ... [2021-05-21 20:49:54,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:49:54" (1/1) ... [2021-05-21 20:49:54,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:49:54" (1/1) ... [2021-05-21 20:49:54,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:49:54" (1/1) ... [2021-05-21 20:49:54,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:49:54" (1/1) ... [2021-05-21 20:49:54,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:49:54" (1/1) ... [2021-05-21 20:49:54,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:49:54" (1/1) ... [2021-05-21 20:49:54,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 20:49:54,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 20:49:54,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 20:49:54,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 20:49:54,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:49:54" (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 [2021-05-21 20:49:54,614 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-21 20:49:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-21 20:49:54,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-21 20:49:54,615 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-21 20:49:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-21 20:49:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-21 20:49:54,616 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-21 20:49:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 20:49:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 20:49:54,616 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-21 20:49:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-21 20:49:54,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-21 20:49:54,617 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-05-21 20:49:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-05-21 20:49:54,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-05-21 20:49:54,618 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 20:49:54,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 20:49:54,948 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-21 20:49:54,949 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:49:54 BoogieIcfgContainer [2021-05-21 20:49:54,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 20:49:54,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 20:49:54,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 20:49:54,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 20:49:54,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:49:54" (1/2) ... [2021-05-21 20:49:54,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382e544b and model type bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 08:49:54, skipping insertion in model container [2021-05-21 20:49:54,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:49:54" (2/2) ... [2021-05-21 20:49:54,971 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-4.wvr.bpl [2021-05-21 20:49:54,975 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 20:49:54,975 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 20:49:54,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 20:49:54,976 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 20:49:55,025 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-05-21 20:49:55,043 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-05-21 20:49:55,060 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 20:49:55,060 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 20:49:55,060 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 20:49:55,060 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 20:49:55,060 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 20:49:55,061 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 20:49:55,061 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 20:49:55,061 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 20:49:55,071 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 81 transitions, 194 flow [2021-05-21 20:50:11,077 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) [2021-05-21 20:50:11,495 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) [2021-05-21 20:50:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:50:12,136 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:12,137 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] [2021-05-21 20:50:12,137 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:12,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1096141821, now seen corresponding path program 1 times [2021-05-21 20:50:12,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:12,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725273854] [2021-05-21 20:50:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:12,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:12,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725273854] [2021-05-21 20:50:12,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725273854] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:12,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:12,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:50:12,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178275635] [2021-05-21 20:50:12,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:50:12,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:12,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:50:12,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:50:12,423 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) [2021-05-21 20:50:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:13,516 INFO L93 Difference]: Finished difference Result 93964 states and 349229 transitions. [2021-05-21 20:50:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:50:13,518 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 [2021-05-21 20:50:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:14,048 INFO L225 Difference]: With dead ends: 93964 [2021-05-21 20:50:14,048 INFO L226 Difference]: Without dead ends: 93964 [2021-05-21 20:50:14,049 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:50:22,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-05-21 20:50:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2021-05-21 20:50:25,341 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) [2021-05-21 20:50:26,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 349229 transitions. [2021-05-21 20:50:26,157 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 349229 transitions. Word has length 75 [2021-05-21 20:50:26,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:26,158 INFO L482 AbstractCegarLoop]: Abstraction has 93964 states and 349229 transitions. [2021-05-21 20:50:26,159 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) [2021-05-21 20:50:26,159 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 349229 transitions. [2021-05-21 20:50:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:50:26,477 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:26,477 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] [2021-05-21 20:50:26,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 20:50:26,478 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:26,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:26,480 INFO L82 PathProgramCache]: Analyzing trace with hash 493735869, now seen corresponding path program 2 times [2021-05-21 20:50:26,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:26,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807617001] [2021-05-21 20:50:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:26,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:26,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:26,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807617001] [2021-05-21 20:50:26,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807617001] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:26,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:26,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:50:26,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623223615] [2021-05-21 20:50:26,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:50:26,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:26,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:50:26,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:50:26,561 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) [2021-05-21 20:50:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:27,370 INFO L93 Difference]: Finished difference Result 93964 states and 344719 transitions. [2021-05-21 20:50:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:50:27,371 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 [2021-05-21 20:50:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:27,662 INFO L225 Difference]: With dead ends: 93964 [2021-05-21 20:50:27,662 INFO L226 Difference]: Without dead ends: 93964 [2021-05-21 20:50:27,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:50:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-05-21 20:50:37,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2021-05-21 20:50:37,839 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) [2021-05-21 20:50:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 344719 transitions. [2021-05-21 20:50:38,576 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 344719 transitions. Word has length 75 [2021-05-21 20:50:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:38,576 INFO L482 AbstractCegarLoop]: Abstraction has 93964 states and 344719 transitions. [2021-05-21 20:50:38,576 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) [2021-05-21 20:50:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 344719 transitions. [2021-05-21 20:50:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:50:38,749 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:38,749 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] [2021-05-21 20:50:38,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 20:50:38,750 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:38,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:38,750 INFO L82 PathProgramCache]: Analyzing trace with hash -2131980333, now seen corresponding path program 3 times [2021-05-21 20:50:38,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:38,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611621199] [2021-05-21 20:50:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:39,222 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-21 20:50:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:39,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:39,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611621199] [2021-05-21 20:50:39,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611621199] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:39,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:39,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:50:39,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722502877] [2021-05-21 20:50:39,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:50:39,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:50:39,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:50:39,431 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) [2021-05-21 20:50:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:41,701 INFO L93 Difference]: Finished difference Result 193744 states and 713684 transitions. [2021-05-21 20:50:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:50:41,702 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 [2021-05-21 20:50:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:43,156 INFO L225 Difference]: With dead ends: 193744 [2021-05-21 20:50:43,177 INFO L226 Difference]: Without dead ends: 193744 [2021-05-21 20:50:43,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 345.4ms TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2021-05-21 20:50:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193744 states. [2021-05-21 20:50:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193744 to 100718. [2021-05-21 20:50:58,665 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) [2021-05-21 20:50:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100718 states to 100718 states and 368137 transitions. [2021-05-21 20:50:58,958 INFO L78 Accepts]: Start accepts. Automaton has 100718 states and 368137 transitions. Word has length 75 [2021-05-21 20:50:58,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:58,958 INFO L482 AbstractCegarLoop]: Abstraction has 100718 states and 368137 transitions. [2021-05-21 20:50:58,959 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) [2021-05-21 20:50:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 100718 states and 368137 transitions. [2021-05-21 20:50:59,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:50:59,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:59,129 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] [2021-05-21 20:50:59,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 20:50:59,129 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:59,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1590701179, now seen corresponding path program 4 times [2021-05-21 20:50:59,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:59,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862400499] [2021-05-21 20:50:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:59,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:59,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862400499] [2021-05-21 20:50:59,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862400499] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:59,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:59,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:50:59,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490333529] [2021-05-21 20:50:59,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:50:59,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:59,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:50:59,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:50:59,341 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) [2021-05-21 20:51:01,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:51:01,862 INFO L93 Difference]: Finished difference Result 172724 states and 635449 transitions. [2021-05-21 20:51:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-21 20:51:01,863 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 [2021-05-21 20:51:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:51:02,343 INFO L225 Difference]: With dead ends: 172724 [2021-05-21 20:51:02,343 INFO L226 Difference]: Without dead ends: 172724 [2021-05-21 20:51:02,343 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 682.5ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-05-21 20:51:13,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172724 states. [2021-05-21 20:51:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172724 to 121087. [2021-05-21 20:51:15,904 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) [2021-05-21 20:51:16,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121087 states to 121087 states and 443400 transitions. [2021-05-21 20:51:16,218 INFO L78 Accepts]: Start accepts. Automaton has 121087 states and 443400 transitions. Word has length 75 [2021-05-21 20:51:16,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:51:16,218 INFO L482 AbstractCegarLoop]: Abstraction has 121087 states and 443400 transitions. [2021-05-21 20:51:16,218 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) [2021-05-21 20:51:16,218 INFO L276 IsEmpty]: Start isEmpty. Operand 121087 states and 443400 transitions. [2021-05-21 20:51:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:51:17,170 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:51:17,171 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] [2021-05-21 20:51:17,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 20:51:17,171 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:51:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:51:17,171 INFO L82 PathProgramCache]: Analyzing trace with hash -833082245, now seen corresponding path program 5 times [2021-05-21 20:51:17,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:51:17,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345056430] [2021-05-21 20:51:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:51:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:51:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:51:17,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:51:17,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345056430] [2021-05-21 20:51:17,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345056430] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:51:17,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:51:17,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-21 20:51:17,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622337821] [2021-05-21 20:51:17,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-21 20:51:17,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:51:17,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-21 20:51:17,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:51:17,511 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) [2021-05-21 20:51:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:51:20,556 INFO L93 Difference]: Finished difference Result 300980 states and 1100291 transitions. [2021-05-21 20:51:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-21 20:51:20,556 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 [2021-05-21 20:51:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:51:21,412 INFO L225 Difference]: With dead ends: 300980 [2021-05-21 20:51:21,412 INFO L226 Difference]: Without dead ends: 300980 [2021-05-21 20:51:21,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 300.7ms TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-05-21 20:51:35,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300980 states. [2021-05-21 20:51:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300980 to 154501. [2021-05-21 20:51:39,332 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) [2021-05-21 20:51:40,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154501 states to 154501 states and 567659 transitions. [2021-05-21 20:51:40,428 INFO L78 Accepts]: Start accepts. Automaton has 154501 states and 567659 transitions. Word has length 75 [2021-05-21 20:51:40,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:51:40,428 INFO L482 AbstractCegarLoop]: Abstraction has 154501 states and 567659 transitions. [2021-05-21 20:51:40,429 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) [2021-05-21 20:51:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 154501 states and 567659 transitions. [2021-05-21 20:51:40,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:51:40,732 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:51:40,732 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] [2021-05-21 20:51:40,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 20:51:40,732 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:51:40,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:51:40,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1787041377, now seen corresponding path program 6 times [2021-05-21 20:51:40,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:51:40,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722441463] [2021-05-21 20:51:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:51:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:51:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:51:40,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:51:40,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722441463] [2021-05-21 20:51:40,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722441463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:51:40,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:51:40,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:51:40,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199702229] [2021-05-21 20:51:40,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:51:40,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:51:40,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:51:40,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:51:40,845 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) [2021-05-21 20:51:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:51:42,443 INFO L93 Difference]: Finished difference Result 191695 states and 691514 transitions. [2021-05-21 20:51:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 20:51:42,443 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 [2021-05-21 20:51:42,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:51:43,481 INFO L225 Difference]: With dead ends: 191695 [2021-05-21 20:51:43,481 INFO L226 Difference]: Without dead ends: 190753 [2021-05-21 20:51:43,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 192.9ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-05-21 20:51:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190753 states. [2021-05-21 20:51:57,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190753 to 159192. [2021-05-21 20:51:58,159 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) [2021-05-21 20:51:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159192 states to 159192 states and 583351 transitions. [2021-05-21 20:51:58,623 INFO L78 Accepts]: Start accepts. Automaton has 159192 states and 583351 transitions. Word has length 75 [2021-05-21 20:51:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:51:58,623 INFO L482 AbstractCegarLoop]: Abstraction has 159192 states and 583351 transitions. [2021-05-21 20:51:58,623 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) [2021-05-21 20:51:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 159192 states and 583351 transitions. [2021-05-21 20:51:59,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:51:59,654 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:51:59,654 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] [2021-05-21 20:51:59,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 20:51:59,655 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:51:59,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:51:59,655 INFO L82 PathProgramCache]: Analyzing trace with hash 67395163, now seen corresponding path program 7 times [2021-05-21 20:51:59,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:51:59,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735021164] [2021-05-21 20:51:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:51:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:51:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:51:59,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:51:59,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735021164] [2021-05-21 20:51:59,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735021164] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:51:59,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:51:59,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-21 20:51:59,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730787290] [2021-05-21 20:51:59,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-21 20:51:59,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:51:59,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-21 20:51:59,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:51:59,982 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) [2021-05-21 20:52:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:02,445 INFO L93 Difference]: Finished difference Result 332982 states and 1211311 transitions. [2021-05-21 20:52:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-21 20:52:02,451 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 [2021-05-21 20:52:02,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:04,150 INFO L225 Difference]: With dead ends: 332982 [2021-05-21 20:52:04,150 INFO L226 Difference]: Without dead ends: 332982 [2021-05-21 20:52:04,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 331.4ms TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-05-21 20:52:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332982 states. [2021-05-21 20:52:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332982 to 186349. [2021-05-21 20:52:23,817 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) [2021-05-21 20:52:25,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186349 states to 186349 states and 683049 transitions. [2021-05-21 20:52:25,140 INFO L78 Accepts]: Start accepts. Automaton has 186349 states and 683049 transitions. Word has length 75 [2021-05-21 20:52:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:52:25,141 INFO L482 AbstractCegarLoop]: Abstraction has 186349 states and 683049 transitions. [2021-05-21 20:52:25,141 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) [2021-05-21 20:52:25,142 INFO L276 IsEmpty]: Start isEmpty. Operand 186349 states and 683049 transitions. [2021-05-21 20:52:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:52:25,605 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:25,605 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] [2021-05-21 20:52:25,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 20:52:25,605 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:52:25,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:25,606 INFO L82 PathProgramCache]: Analyzing trace with hash 261745055, now seen corresponding path program 8 times [2021-05-21 20:52:25,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:25,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183536750] [2021-05-21 20:52:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:25,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:25,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183536750] [2021-05-21 20:52:25,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183536750] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:25,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:25,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:52:25,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130122644] [2021-05-21 20:52:25,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:52:25,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:25,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:52:25,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:52:25,710 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) [2021-05-21 20:52:28,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:28,090 INFO L93 Difference]: Finished difference Result 224238 states and 809085 transitions. [2021-05-21 20:52:28,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 20:52:28,090 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 [2021-05-21 20:52:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:29,224 INFO L225 Difference]: With dead ends: 224238 [2021-05-21 20:52:29,224 INFO L226 Difference]: Without dead ends: 222172 [2021-05-21 20:52:29,225 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 258.6ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-05-21 20:52:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222172 states. [2021-05-21 20:52:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222172 to 186766. [2021-05-21 20:52:45,428 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) [2021-05-21 20:52:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186766 states to 186766 states and 683857 transitions. [2021-05-21 20:52:46,742 INFO L78 Accepts]: Start accepts. Automaton has 186766 states and 683857 transitions. Word has length 75 [2021-05-21 20:52:46,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:52:46,742 INFO L482 AbstractCegarLoop]: Abstraction has 186766 states and 683857 transitions. [2021-05-21 20:52:46,742 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) [2021-05-21 20:52:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 186766 states and 683857 transitions. [2021-05-21 20:52:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:52:47,128 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:52:47,128 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] [2021-05-21 20:52:47,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 20:52:47,128 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:52:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:52:47,129 INFO L82 PathProgramCache]: Analyzing trace with hash 392321083, now seen corresponding path program 9 times [2021-05-21 20:52:47,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:52:47,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617920154] [2021-05-21 20:52:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:52:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:52:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:52:47,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:52:47,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617920154] [2021-05-21 20:52:47,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617920154] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:52:47,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:52:47,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:52:47,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18203380] [2021-05-21 20:52:47,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:52:47,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:52:47,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:52:47,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:52:47,153 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) [2021-05-21 20:52:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:52:48,608 INFO L93 Difference]: Finished difference Result 178837 states and 645960 transitions. [2021-05-21 20:52:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:52:48,608 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 [2021-05-21 20:52:48,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:52:49,057 INFO L225 Difference]: With dead ends: 178837 [2021-05-21 20:52:49,058 INFO L226 Difference]: Without dead ends: 178795 [2021-05-21 20:52:49,058 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 [2021-05-21 20:53:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178795 states. [2021-05-21 20:53:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178795 to 177323. [2021-05-21 20:53:03,720 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) [2021-05-21 20:53:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177323 states to 177323 states and 640824 transitions. [2021-05-21 20:53:05,063 INFO L78 Accepts]: Start accepts. Automaton has 177323 states and 640824 transitions. Word has length 75 [2021-05-21 20:53:05,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:05,064 INFO L482 AbstractCegarLoop]: Abstraction has 177323 states and 640824 transitions. [2021-05-21 20:53:05,064 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) [2021-05-21 20:53:05,064 INFO L276 IsEmpty]: Start isEmpty. Operand 177323 states and 640824 transitions. [2021-05-21 20:53:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:53:05,437 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:05,437 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] [2021-05-21 20:53:05,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 20:53:05,437 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:53:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:05,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1448657563, now seen corresponding path program 10 times [2021-05-21 20:53:05,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:05,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962034809] [2021-05-21 20:53:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:05,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:05,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962034809] [2021-05-21 20:53:05,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962034809] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:05,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:05,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-21 20:53:05,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570736884] [2021-05-21 20:53:05,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-21 20:53:05,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:05,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-21 20:53:05,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:53:05,693 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) [2021-05-21 20:53:09,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:09,213 INFO L93 Difference]: Finished difference Result 301437 states and 1083094 transitions. [2021-05-21 20:53:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 20:53:09,213 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 [2021-05-21 20:53:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:10,107 INFO L225 Difference]: With dead ends: 301437 [2021-05-21 20:53:10,107 INFO L226 Difference]: Without dead ends: 300668 [2021-05-21 20:53:10,107 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 396.9ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-05-21 20:53:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300668 states. [2021-05-21 20:53:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300668 to 193029. [2021-05-21 20:53:28,476 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) [2021-05-21 20:53:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193029 states to 193029 states and 699560 transitions. [2021-05-21 20:53:29,837 INFO L78 Accepts]: Start accepts. Automaton has 193029 states and 699560 transitions. Word has length 75 [2021-05-21 20:53:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:53:29,837 INFO L482 AbstractCegarLoop]: Abstraction has 193029 states and 699560 transitions. [2021-05-21 20:53:29,837 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) [2021-05-21 20:53:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 193029 states and 699560 transitions. [2021-05-21 20:53:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:53:30,236 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:53:30,236 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] [2021-05-21 20:53:30,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 20:53:30,236 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:53:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:53:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1860346947, now seen corresponding path program 11 times [2021-05-21 20:53:30,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:53:30,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433532476] [2021-05-21 20:53:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:53:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:53:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:53:30,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:53:30,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433532476] [2021-05-21 20:53:30,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433532476] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:53:30,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:53:30,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:53:30,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773177847] [2021-05-21 20:53:30,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:53:30,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:53:30,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:53:30,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:53:30,357 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) [2021-05-21 20:53:35,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:53:35,301 INFO L93 Difference]: Finished difference Result 654848 states and 2399353 transitions. [2021-05-21 20:53:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-21 20:53:35,301 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 [2021-05-21 20:53:35,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:53:38,134 INFO L225 Difference]: With dead ends: 654848 [2021-05-21 20:53:38,135 INFO L226 Difference]: Without dead ends: 653561 [2021-05-21 20:53:38,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 168.6ms TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-05-21 20:54:04,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653561 states. [2021-05-21 20:54:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653561 to 220211. [2021-05-21 20:54:12,440 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) [2021-05-21 20:54:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220211 states to 220211 states and 796440 transitions. [2021-05-21 20:54:13,606 INFO L78 Accepts]: Start accepts. Automaton has 220211 states and 796440 transitions. Word has length 75 [2021-05-21 20:54:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:54:13,607 INFO L482 AbstractCegarLoop]: Abstraction has 220211 states and 796440 transitions. [2021-05-21 20:54:13,607 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) [2021-05-21 20:54:13,607 INFO L276 IsEmpty]: Start isEmpty. Operand 220211 states and 796440 transitions. [2021-05-21 20:54:14,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:54:14,871 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:54:14,871 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] [2021-05-21 20:54:14,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-21 20:54:14,871 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:54:14,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:54:14,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1523420445, now seen corresponding path program 12 times [2021-05-21 20:54:14,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:54:14,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761673376] [2021-05-21 20:54:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:54:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:54:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:54:15,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:54:15,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761673376] [2021-05-21 20:54:15,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761673376] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:54:15,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:54:15,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:54:15,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163297650] [2021-05-21 20:54:15,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:54:15,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:54:15,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:54:15,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:54:15,032 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) [2021-05-21 20:54:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:54:19,902 INFO L93 Difference]: Finished difference Result 484911 states and 1767616 transitions. [2021-05-21 20:54:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-21 20:54:19,902 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 [2021-05-21 20:54:19,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:54:23,253 INFO L225 Difference]: With dead ends: 484911 [2021-05-21 20:54:23,253 INFO L226 Difference]: Without dead ends: 484755 [2021-05-21 20:54:23,254 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 213.5ms TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-05-21 20:54:45,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484755 states. [2021-05-21 20:54:51,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484755 to 238155. [2021-05-21 20:54:51,404 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) [2021-05-21 20:54:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238155 states to 238155 states and 862836 transitions. [2021-05-21 20:54:52,119 INFO L78 Accepts]: Start accepts. Automaton has 238155 states and 862836 transitions. Word has length 75 [2021-05-21 20:54:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:54:52,119 INFO L482 AbstractCegarLoop]: Abstraction has 238155 states and 862836 transitions. [2021-05-21 20:54:52,119 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) [2021-05-21 20:54:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 238155 states and 862836 transitions. [2021-05-21 20:54:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:54:53,475 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:54:53,475 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] [2021-05-21 20:54:53,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-21 20:54:53,475 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:54:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:54:53,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1871069443, now seen corresponding path program 13 times [2021-05-21 20:54:53,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:54:53,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528827608] [2021-05-21 20:54:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:54:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:54:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:54:53,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:54:53,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528827608] [2021-05-21 20:54:53,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528827608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:54:53,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:54:53,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:54:53,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401039541] [2021-05-21 20:54:53,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:54:53,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:54:53,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:54:53,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:54:53,570 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) [2021-05-21 20:54:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:54:57,064 INFO L93 Difference]: Finished difference Result 501095 states and 1825900 transitions. [2021-05-21 20:54:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-21 20:54:57,065 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 [2021-05-21 20:54:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:54:59,406 INFO L225 Difference]: With dead ends: 501095 [2021-05-21 20:54:59,406 INFO L226 Difference]: Without dead ends: 499860 [2021-05-21 20:54:59,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 180.7ms TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-05-21 20:55:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499860 states. [2021-05-21 20:55:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499860 to 222826. [2021-05-21 20:55:27,426 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) [2021-05-21 20:55:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222826 states to 222826 states and 806004 transitions. [2021-05-21 20:55:29,391 INFO L78 Accepts]: Start accepts. Automaton has 222826 states and 806004 transitions. Word has length 75 [2021-05-21 20:55:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:55:29,392 INFO L482 AbstractCegarLoop]: Abstraction has 222826 states and 806004 transitions. [2021-05-21 20:55:29,392 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) [2021-05-21 20:55:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 222826 states and 806004 transitions. [2021-05-21 20:55:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:55:30,259 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:55:30,259 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] [2021-05-21 20:55:30,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-21 20:55:30,259 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:55:30,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:55:30,260 INFO L82 PathProgramCache]: Analyzing trace with hash -489807043, now seen corresponding path program 14 times [2021-05-21 20:55:30,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:55:30,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825025131] [2021-05-21 20:55:30,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:55:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:55:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:55:30,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:55:30,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825025131] [2021-05-21 20:55:30,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825025131] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:55:30,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:55:30,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:55:30,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820658380] [2021-05-21 20:55:30,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:55:30,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:55:30,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:55:30,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:55:30,465 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) [2021-05-21 20:55:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:55:34,594 INFO L93 Difference]: Finished difference Result 433993 states and 1573268 transitions. [2021-05-21 20:55:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-21 20:55:34,594 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 [2021-05-21 20:55:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:55:37,849 INFO L225 Difference]: With dead ends: 433993 [2021-05-21 20:55:37,851 INFO L226 Difference]: Without dead ends: 432650 [2021-05-21 20:55:37,852 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 274.2ms TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-05-21 20:55:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432650 states. [2021-05-21 20:56:03,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432650 to 207018. [2021-05-21 20:56:03,553 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) [2021-05-21 20:56:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207018 states to 207018 states and 747559 transitions. [2021-05-21 20:56:05,072 INFO L78 Accepts]: Start accepts. Automaton has 207018 states and 747559 transitions. Word has length 75 [2021-05-21 20:56:05,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:56:05,072 INFO L482 AbstractCegarLoop]: Abstraction has 207018 states and 747559 transitions. [2021-05-21 20:56:05,072 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) [2021-05-21 20:56:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 207018 states and 747559 transitions. [2021-05-21 20:56:05,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:56:05,534 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:56:05,534 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] [2021-05-21 20:56:05,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-21 20:56:05,534 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:56:05,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:56:05,535 INFO L82 PathProgramCache]: Analyzing trace with hash 410670365, now seen corresponding path program 15 times [2021-05-21 20:56:05,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:56:05,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601813215] [2021-05-21 20:56:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:56:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:56:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:56:05,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:56:05,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601813215] [2021-05-21 20:56:05,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601813215] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:56:05,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:56:05,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:56:05,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172134900] [2021-05-21 20:56:05,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:56:05,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:56:05,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:56:05,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:56:05,667 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) [2021-05-21 20:56:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:56:09,025 INFO L93 Difference]: Finished difference Result 369076 states and 1335939 transitions. [2021-05-21 20:56:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-21 20:56:09,025 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 [2021-05-21 20:56:09,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:56:10,731 INFO L225 Difference]: With dead ends: 369076 [2021-05-21 20:56:10,731 INFO L226 Difference]: Without dead ends: 367708 [2021-05-21 20:56:10,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 210.2ms TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-05-21 20:56:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367708 states. [2021-05-21 20:56:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367708 to 172048. [2021-05-21 20:56:32,286 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) [2021-05-21 20:56:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172048 states to 172048 states and 617682 transitions. [2021-05-21 20:56:32,776 INFO L78 Accepts]: Start accepts. Automaton has 172048 states and 617682 transitions. Word has length 75 [2021-05-21 20:56:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:56:32,776 INFO L482 AbstractCegarLoop]: Abstraction has 172048 states and 617682 transitions. [2021-05-21 20:56:32,776 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) [2021-05-21 20:56:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 172048 states and 617682 transitions. [2021-05-21 20:56:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:56:33,973 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:56:33,973 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] [2021-05-21 20:56:33,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-21 20:56:33,973 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:56:33,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:56:33,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1200968973, now seen corresponding path program 16 times [2021-05-21 20:56:33,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:56:33,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989256165] [2021-05-21 20:56:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:56:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:56:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:56:34,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:56:34,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989256165] [2021-05-21 20:56:34,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989256165] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:56:34,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:56:34,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:56:34,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99662360] [2021-05-21 20:56:34,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:56:34,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:56:34,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:56:34,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:56:34,072 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) [2021-05-21 20:56:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:56:38,101 INFO L93 Difference]: Finished difference Result 452413 states and 1622907 transitions. [2021-05-21 20:56:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-21 20:56:38,102 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 [2021-05-21 20:56:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:56:40,253 INFO L225 Difference]: With dead ends: 452413 [2021-05-21 20:56:40,253 INFO L226 Difference]: Without dead ends: 452034 [2021-05-21 20:56:40,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 139.6ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:57:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452034 states. [2021-05-21 20:57:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452034 to 184443. [2021-05-21 20:57:05,112 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) [2021-05-21 20:57:06,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184443 states to 184443 states and 662370 transitions. [2021-05-21 20:57:06,563 INFO L78 Accepts]: Start accepts. Automaton has 184443 states and 662370 transitions. Word has length 75 [2021-05-21 20:57:06,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:57:06,563 INFO L482 AbstractCegarLoop]: Abstraction has 184443 states and 662370 transitions. [2021-05-21 20:57:06,564 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) [2021-05-21 20:57:06,564 INFO L276 IsEmpty]: Start isEmpty. Operand 184443 states and 662370 transitions. [2021-05-21 20:57:06,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:57:06,934 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:57:06,935 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] [2021-05-21 20:57:06,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-21 20:57:06,935 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:57:06,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:57:06,935 INFO L82 PathProgramCache]: Analyzing trace with hash 859844631, now seen corresponding path program 17 times [2021-05-21 20:57:06,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:57:06,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809617062] [2021-05-21 20:57:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:57:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:57:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:57:07,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:57:07,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809617062] [2021-05-21 20:57:07,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809617062] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:57:07,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:57:07,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:57:07,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776477848] [2021-05-21 20:57:07,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:57:07,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:57:07,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:57:07,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:57:07,034 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) [2021-05-21 20:57:10,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:57:10,136 INFO L93 Difference]: Finished difference Result 372669 states and 1333487 transitions. [2021-05-21 20:57:10,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-21 20:57:10,136 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 [2021-05-21 20:57:10,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:57:11,204 INFO L225 Difference]: With dead ends: 372669 [2021-05-21 20:57:11,204 INFO L226 Difference]: Without dead ends: 372424 [2021-05-21 20:57:11,204 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 114.5ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-05-21 20:57:27,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372424 states. [2021-05-21 20:57:32,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372424 to 183731. [2021-05-21 20:57:32,600 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) [2021-05-21 20:57:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183731 states to 183731 states and 659703 transitions. [2021-05-21 20:57:33,225 INFO L78 Accepts]: Start accepts. Automaton has 183731 states and 659703 transitions. Word has length 75 [2021-05-21 20:57:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:57:33,225 INFO L482 AbstractCegarLoop]: Abstraction has 183731 states and 659703 transitions. [2021-05-21 20:57:33,225 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) [2021-05-21 20:57:33,225 INFO L276 IsEmpty]: Start isEmpty. Operand 183731 states and 659703 transitions. [2021-05-21 20:57:33,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:57:33,611 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:57:33,611 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] [2021-05-21 20:57:33,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-21 20:57:33,612 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:57:33,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:57:33,612 INFO L82 PathProgramCache]: Analyzing trace with hash -604267675, now seen corresponding path program 18 times [2021-05-21 20:57:33,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:57:33,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338725576] [2021-05-21 20:57:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:57:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:57:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:57:33,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:57:33,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338725576] [2021-05-21 20:57:33,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338725576] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:57:33,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:57:33,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:57:33,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883107371] [2021-05-21 20:57:33,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:57:33,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:57:33,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:57:33,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:57:33,767 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) [2021-05-21 20:57:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:57:36,244 INFO L93 Difference]: Finished difference Result 199112 states and 710504 transitions. [2021-05-21 20:57:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 20:57:36,257 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 [2021-05-21 20:57:36,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:57:36,989 INFO L225 Difference]: With dead ends: 199112 [2021-05-21 20:57:36,989 INFO L226 Difference]: Without dead ends: 196783 [2021-05-21 20:57:36,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 227.9ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-05-21 20:57:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196783 states. [2021-05-21 20:57:51,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196783 to 193531. [2021-05-21 20:57:51,749 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) [2021-05-21 20:57:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193531 states to 193531 states and 692823 transitions. [2021-05-21 20:57:53,144 INFO L78 Accepts]: Start accepts. Automaton has 193531 states and 692823 transitions. Word has length 75 [2021-05-21 20:57:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:57:53,145 INFO L482 AbstractCegarLoop]: Abstraction has 193531 states and 692823 transitions. [2021-05-21 20:57:53,145 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) [2021-05-21 20:57:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 193531 states and 692823 transitions. [2021-05-21 20:57:53,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:57:53,567 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:57:53,567 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] [2021-05-21 20:57:53,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-21 20:57:53,567 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:57:53,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:57:53,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2086877239, now seen corresponding path program 19 times [2021-05-21 20:57:53,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:57:53,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408812461] [2021-05-21 20:57:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:57:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:57:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:57:53,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:57:53,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408812461] [2021-05-21 20:57:53,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408812461] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:57:53,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:57:53,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 20:57:53,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537186929] [2021-05-21 20:57:53,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 20:57:53,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:57:53,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 20:57:53,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-05-21 20:57:53,913 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) [2021-05-21 20:57:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:57:56,835 INFO L93 Difference]: Finished difference Result 315638 states and 1109432 transitions. [2021-05-21 20:57:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 20:57:56,836 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 [2021-05-21 20:57:56,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:57:57,714 INFO L225 Difference]: With dead ends: 315638 [2021-05-21 20:57:57,714 INFO L226 Difference]: Without dead ends: 299217 [2021-05-21 20:57:57,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 388.7ms TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-05-21 20:58:11,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299217 states. [2021-05-21 20:58:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299217 to 246599. [2021-05-21 20:58:16,075 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) [2021-05-21 20:58:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246599 states to 246599 states and 875103 transitions. [2021-05-21 20:58:18,285 INFO L78 Accepts]: Start accepts. Automaton has 246599 states and 875103 transitions. Word has length 75 [2021-05-21 20:58:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:58:18,285 INFO L482 AbstractCegarLoop]: Abstraction has 246599 states and 875103 transitions. [2021-05-21 20:58:18,286 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) [2021-05-21 20:58:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 246599 states and 875103 transitions. [2021-05-21 20:58:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:58:19,052 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:58:19,053 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] [2021-05-21 20:58:19,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-21 20:58:19,053 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:58:19,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:58:19,054 INFO L82 PathProgramCache]: Analyzing trace with hash 114542167, now seen corresponding path program 20 times [2021-05-21 20:58:19,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:58:19,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083645212] [2021-05-21 20:58:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:58:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:58:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:58:19,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:58:19,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083645212] [2021-05-21 20:58:19,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083645212] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:58:19,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:58:19,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-21 20:58:19,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581769322] [2021-05-21 20:58:19,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-21 20:58:19,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:58:19,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-21 20:58:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:58:19,313 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) [2021-05-21 20:58:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:58:25,660 INFO L93 Difference]: Finished difference Result 615354 states and 2149380 transitions. [2021-05-21 20:58:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 20:58:25,660 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 [2021-05-21 20:58:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:58:28,510 INFO L225 Difference]: With dead ends: 615354 [2021-05-21 20:58:28,511 INFO L226 Difference]: Without dead ends: 583898 [2021-05-21 20:58:28,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 592.3ms TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2021-05-21 20:58:50,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583898 states. [2021-05-21 20:58:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583898 to 289469. [2021-05-21 20:58:57,815 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) [2021-05-21 20:58:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289469 states to 289469 states and 1028438 transitions. [2021-05-21 20:58:59,661 INFO L78 Accepts]: Start accepts. Automaton has 289469 states and 1028438 transitions. Word has length 75 [2021-05-21 20:58:59,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:58:59,661 INFO L482 AbstractCegarLoop]: Abstraction has 289469 states and 1028438 transitions. [2021-05-21 20:58:59,661 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) [2021-05-21 20:58:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 289469 states and 1028438 transitions. [2021-05-21 20:59:01,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:59:01,102 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:59:01,102 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] [2021-05-21 20:59:01,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-21 20:59:01,102 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:59:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:59:01,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1886350067, now seen corresponding path program 21 times [2021-05-21 20:59:01,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:59:01,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533972460] [2021-05-21 20:59:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:59:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:59:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:59:01,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:59:01,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533972460] [2021-05-21 20:59:01,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533972460] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:59:01,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:59:01,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 20:59:01,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526014676] [2021-05-21 20:59:01,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 20:59:01,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:59:01,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 20:59:01,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:59:01,262 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) [2021-05-21 20:59:03,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:59:03,328 INFO L93 Difference]: Finished difference Result 317158 states and 1117415 transitions. [2021-05-21 20:59:03,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 20:59:03,329 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 [2021-05-21 20:59:03,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:59:04,203 INFO L225 Difference]: With dead ends: 317158 [2021-05-21 20:59:04,203 INFO L226 Difference]: Without dead ends: 316410 [2021-05-21 20:59:04,203 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 201.8ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:59:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316410 states. [2021-05-21 20:59:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316410 to 286773. [2021-05-21 20:59:23,822 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) [2021-05-21 20:59:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286773 states to 286773 states and 1018757 transitions. [2021-05-21 20:59:25,623 INFO L78 Accepts]: Start accepts. Automaton has 286773 states and 1018757 transitions. Word has length 75 [2021-05-21 20:59:25,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:59:25,623 INFO L482 AbstractCegarLoop]: Abstraction has 286773 states and 1018757 transitions. [2021-05-21 20:59:25,623 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) [2021-05-21 20:59:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 286773 states and 1018757 transitions. [2021-05-21 20:59:26,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:59:26,244 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:59:26,245 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] [2021-05-21 20:59:26,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-21 20:59:26,245 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:59:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:59:26,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1370146751, now seen corresponding path program 22 times [2021-05-21 20:59:26,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:59:26,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708636107] [2021-05-21 20:59:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:59:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:59:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:59:26,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:59:26,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708636107] [2021-05-21 20:59:26,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708636107] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:59:26,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:59:26,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:59:26,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562601423] [2021-05-21 20:59:26,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:59:26,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:59:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:59:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:59:26,260 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) [2021-05-21 20:59:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:59:28,423 INFO L93 Difference]: Finished difference Result 272572 states and 949197 transitions. [2021-05-21 20:59:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:59:28,424 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 [2021-05-21 20:59:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:59:29,950 INFO L225 Difference]: With dead ends: 272572 [2021-05-21 20:59:29,951 INFO L226 Difference]: Without dead ends: 272572 [2021-05-21 20:59:29,951 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:59:44,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272572 states. [2021-05-21 20:59:48,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272572 to 272512. [2021-05-21 20:59:49,028 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) [2021-05-21 20:59:50,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272512 states to 272512 states and 948987 transitions. [2021-05-21 20:59:50,702 INFO L78 Accepts]: Start accepts. Automaton has 272512 states and 948987 transitions. Word has length 75 [2021-05-21 20:59:50,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:59:50,702 INFO L482 AbstractCegarLoop]: Abstraction has 272512 states and 948987 transitions. [2021-05-21 20:59:50,703 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) [2021-05-21 20:59:50,703 INFO L276 IsEmpty]: Start isEmpty. Operand 272512 states and 948987 transitions. [2021-05-21 20:59:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 20:59:52,077 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:59:52,077 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] [2021-05-21 20:59:52,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-21 20:59:52,078 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:59:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:59:52,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1130103073, now seen corresponding path program 23 times [2021-05-21 20:59:52,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:59:52,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836732673] [2021-05-21 20:59:52,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:59:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:59:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:59:52,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:59:52,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836732673] [2021-05-21 20:59:52,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836732673] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:59:52,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:59:52,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-21 20:59:52,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605668874] [2021-05-21 20:59:52,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-21 20:59:52,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:59:52,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-21 20:59:52,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-05-21 20:59:52,363 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) [2021-05-21 20:59:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:59:54,751 INFO L93 Difference]: Finished difference Result 322096 states and 1116136 transitions. [2021-05-21 20:59:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-21 20:59:54,751 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 [2021-05-21 20:59:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:59:56,208 INFO L225 Difference]: With dead ends: 322096 [2021-05-21 20:59:56,209 INFO L226 Difference]: Without dead ends: 321712 [2021-05-21 20:59:56,210 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 396.8ms TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-05-21 21:00:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321712 states. [2021-05-21 21:00:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321712 to 292852. [2021-05-21 21:00:15,998 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) [2021-05-21 21:00:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292852 states to 292852 states and 1016076 transitions. [2021-05-21 21:00:17,894 INFO L78 Accepts]: Start accepts. Automaton has 292852 states and 1016076 transitions. Word has length 75 [2021-05-21 21:00:17,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:00:17,897 INFO L482 AbstractCegarLoop]: Abstraction has 292852 states and 1016076 transitions. [2021-05-21 21:00:17,897 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) [2021-05-21 21:00:17,897 INFO L276 IsEmpty]: Start isEmpty. Operand 292852 states and 1016076 transitions. [2021-05-21 21:00:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 21:00:19,407 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:00:19,407 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] [2021-05-21 21:00:19,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-21 21:00:19,408 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:00:19,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:00:19,408 INFO L82 PathProgramCache]: Analyzing trace with hash 532907179, now seen corresponding path program 24 times [2021-05-21 21:00:19,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:00:19,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167329954] [2021-05-21 21:00:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:00:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:00:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:00:19,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:00:19,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167329954] [2021-05-21 21:00:19,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167329954] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:00:19,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:00:19,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-21 21:00:19,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427503509] [2021-05-21 21:00:19,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-21 21:00:19,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:00:19,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-21 21:00:19,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-05-21 21:00:19,498 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) [2021-05-21 21:00:21,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:00:21,551 INFO L93 Difference]: Finished difference Result 324280 states and 1118552 transitions. [2021-05-21 21:00:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 21:00:21,552 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 [2021-05-21 21:00:21,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:00:22,356 INFO L225 Difference]: With dead ends: 324280 [2021-05-21 21:00:22,356 INFO L226 Difference]: Without dead ends: 320319 [2021-05-21 21:00:22,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 185.4ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-05-21 21:00:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320319 states. [2021-05-21 21:00:41,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320319 to 290527. [2021-05-21 21:00:42,115 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) [2021-05-21 21:00:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290527 states to 290527 states and 1008123 transitions. [2021-05-21 21:00:43,933 INFO L78 Accepts]: Start accepts. Automaton has 290527 states and 1008123 transitions. Word has length 75 [2021-05-21 21:00:43,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:00:43,933 INFO L482 AbstractCegarLoop]: Abstraction has 290527 states and 1008123 transitions. [2021-05-21 21:00:43,933 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) [2021-05-21 21:00:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 290527 states and 1008123 transitions. [2021-05-21 21:00:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-21 21:00:44,638 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:00:44,639 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] [2021-05-21 21:00:44,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-21 21:00:44,639 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:00:44,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:00:44,647 INFO L82 PathProgramCache]: Analyzing trace with hash 58243295, now seen corresponding path program 25 times [2021-05-21 21:00:44,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:00:44,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627166780] [2021-05-21 21:00:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:00:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:00:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:00:44,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:00:44,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627166780] [2021-05-21 21:00:44,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627166780] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:00:44,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:00:44,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-21 21:00:44,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009169633] [2021-05-21 21:00:44,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-21 21:00:44,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:00:44,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-21 21:00:44,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-05-21 21:00:44,881 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) [2021-05-21 21:00:47,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:00:47,729 INFO L93 Difference]: Finished difference Result 305493 states and 1055715 transitions. [2021-05-21 21:00:47,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-21 21:00:47,729 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 [2021-05-21 21:00:47,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:00:49,560 INFO L225 Difference]: With dead ends: 305493 [2021-05-21 21:00:49,560 INFO L226 Difference]: Without dead ends: 305493 [2021-05-21 21:00:49,560 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 291.5ms TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-05-21 21:01:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305493 states. [2021-05-21 21:01:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305493 to 297949. [2021-05-21 21:01:10,431 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) Received shutdown request... [2021-05-21 21:01:11,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-21 21:01:11,694 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-21 21:01:11,696 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 21:01:11,697 WARN L196 ceAbstractionStarter]: Timeout [2021-05-21 21:01:11,698 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 09:01:11 BasicIcfg [2021-05-21 21:01:11,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 21:01:11,698 INFO L168 Benchmark]: Toolchain (without parser) took 677246.96 ms. Allocated memory was 362.8 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 341.8 MB in the beginning and 12.7 GB in the end (delta: -12.4 GB). Peak memory consumption was 8.8 GB. Max. memory is 16.0 GB. [2021-05-21 21:01:11,698 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 362.8 MB. Free memory was 343.1 MB in the beginning and 343.1 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 21:01:11,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.27 ms. Allocated memory is still 362.8 MB. Free memory was 341.7 MB in the beginning and 340.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 21:01:11,699 INFO L168 Benchmark]: Boogie Preprocessor took 37.04 ms. Allocated memory is still 362.8 MB. Free memory was 340.1 MB in the beginning and 339.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 21:01:11,699 INFO L168 Benchmark]: RCFGBuilder took 412.01 ms. Allocated memory is still 362.8 MB. Free memory was 339.0 MB in the beginning and 321.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-05-21 21:01:11,699 INFO L168 Benchmark]: TraceAbstraction took 676747.44 ms. Allocated memory was 362.8 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 321.1 MB in the beginning and 12.7 GB in the end (delta: -12.4 GB). Peak memory consumption was 8.8 GB. Max. memory is 16.0 GB. [2021-05-21 21:01:11,699 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 0.16 ms. Allocated memory is still 362.8 MB. Free memory was 343.1 MB in the beginning and 343.1 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.27 ms. Allocated memory is still 362.8 MB. Free memory was 341.7 MB in the beginning and 340.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 37.04 ms. Allocated memory is still 362.8 MB. Free memory was 340.1 MB in the beginning and 339.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 412.01 ms. Allocated memory is still 362.8 MB. Free memory was 339.0 MB in the beginning and 321.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 676747.44 ms. Allocated memory was 362.8 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 321.1 MB in the beginning and 12.7 GB in the end (delta: -12.4 GB). Peak memory consumption was 8.8 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while ReachableStatesComputation was computing reachable states (162991 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: 676636.2ms, OverallIterations: 25, TraceHistogramMax: 1, EmptinessCheckTime: 18367.0ms, AutomataDifference: 109028.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16017.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4800 SDtfs, 13679 SDslu, 21781 SDs, 0 SdLazy, 13858 SolverSat, 3321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10740.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 470 GetRequests, 48 SyntacticMatches, 16 SemanticMatches, 406 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 6108.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=292852occurred in iteration=23, InterpolantAutomatonStates: 383, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 528411.2ms AutomataMinimizationTime, 25 MinimizatonAttempts, 2887061 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 60.7ms SsaConstructionTime, 432.4ms SatisfiabilityAnalysisTime, 4067.9ms InterpolantComputationTime, 1875 NumberOfCodeBlocks, 1875 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1850 ConstructedInterpolants, 0 QuantifiedInterpolants, 11302 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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