/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/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 05:15:50,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 05:15:50,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 05:15:50,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 05:15:50,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 05:15:50,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 05:15:50,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 05:15:50,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 05:15:50,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 05:15:50,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 05:15:50,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 05:15:50,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 05:15:50,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 05:15:50,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 05:15:50,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 05:15:50,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 05:15:50,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 05:15:50,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 05:15:50,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 05:15:50,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 05:15:50,410 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 [2021-06-05 05:15:50,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 05:15:50,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 05:15:50,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 05:15:50,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 05:15:50,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 05:15:50,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 05:15:50,449 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 05:15:50,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 05:15:50,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 05:15:50,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 05:15:50,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 05:15:50,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 05:15:50,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 05:15:50,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 05:15:50,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 05:15:50,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 05:15:50,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 05:15:50,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 05:15:50,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 05:15:50,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 05:15:50,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 05:15:50,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 05:15:50,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 05:15:50,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 05:15:50,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 05:15:50,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 05:15:50,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 05:15:50,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 05:15:50,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 05:15:50,452 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 05:15:50,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 05:15:50,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 05:15:50,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 05:15:50,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 05:15:50,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 05:15:50,768 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 05:15:50,769 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 05:15:50,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-06-05 05:15:50,770 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-06-05 05:15:50,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 05:15:50,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 05:15:50,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 05:15:50,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 05:15:50,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 05:15:50,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/1) ... [2021-06-05 05:15:50,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/1) ... [2021-06-05 05:15:50,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 05:15:50,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 05:15:50,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 05:15:50,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 05:15:50,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/1) ... [2021-06-05 05:15:50,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/1) ... [2021-06-05 05:15:50,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/1) ... [2021-06-05 05:15:50,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/1) ... [2021-06-05 05:15:50,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/1) ... [2021-06-05 05:15:50,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/1) ... [2021-06-05 05:15:50,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/1) ... [2021-06-05 05:15:50,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 05:15:50,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 05:15:50,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 05:15:50,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 05:15:50,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 05:15:50,933 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 05:15:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 05:15:50,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 05:15:50,934 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 05:15:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 05:15:50,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 05:15:50,934 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 05:15:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 05:15:50,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 05:15:50,934 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 05:15:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 05:15:50,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 05:15:50,936 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 05:15:50,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 05:15:50,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 05:15:50,936 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-05 05:15:50,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-05 05:15:50,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-05 05:15:50,937 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 05:15:51,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 05:15:51,169 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 05:15:51,171 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:15:51 BoogieIcfgContainer [2021-06-05 05:15:51,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 05:15:51,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 05:15:51,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 05:15:51,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 05:15:51,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:15:50" (1/2) ... [2021-06-05 05:15:51,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2578af and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 05:15:51, skipping insertion in model container [2021-06-05 05:15:51,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:15:51" (2/2) ... [2021-06-05 05:15:51,176 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-06-05 05:15:51,181 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 05:15:51,181 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 05:15:51,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 05:15:51,182 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 05:15:51,294 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-06-05 05:15:51,313 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-05 05:15:51,329 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 05:15:51,329 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 05:15:51,329 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 05:15:51,330 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 05:15:51,330 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 05:15:51,330 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 05:15:51,330 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 05:15:51,330 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 05:15:51,338 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 46 transitions, 132 flow [2021-06-05 05:15:52,378 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:52,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:52,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:15:52,514 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:15:52,514 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] [2021-06-05 05:15:52,515 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:15:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:15:52,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1270525438, now seen corresponding path program 1 times [2021-06-05 05:15:52,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:15:52,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144077998] [2021-06-05 05:15:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:15:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:15:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:15:52,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:15:52,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144077998] [2021-06-05 05:15:52,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144077998] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:15:52,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:15:52,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 05:15:52,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693638794] [2021-06-05 05:15:52,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 05:15:52,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:15:52,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 05:15:52,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 05:15:52,857 INFO L87 Difference]: Start difference. First operand has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:15:53,179 INFO L93 Difference]: Finished difference Result 12865 states and 53759 transitions. [2021-06-05 05:15:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 05:15:53,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:15:53,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:15:53,314 INFO L225 Difference]: With dead ends: 12865 [2021-06-05 05:15:53,314 INFO L226 Difference]: Without dead ends: 12865 [2021-06-05 05:15:53,316 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:15:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12865 states. [2021-06-05 05:15:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12865 to 12865. [2021-06-05 05:15:53,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12865 states, 12864 states have (on average 4.179026741293533) internal successors, (53759), 12864 states have internal predecessors, (53759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12865 states to 12865 states and 53759 transitions. [2021-06-05 05:15:54,142 INFO L78 Accepts]: Start accepts. Automaton has 12865 states and 53759 transitions. Word has length 39 [2021-06-05 05:15:54,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:15:54,143 INFO L482 AbstractCegarLoop]: Abstraction has 12865 states and 53759 transitions. [2021-06-05 05:15:54,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 12865 states and 53759 transitions. [2021-06-05 05:15:54,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:15:54,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:15:54,191 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] [2021-06-05 05:15:54,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 05:15:54,191 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:15:54,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:15:54,195 INFO L82 PathProgramCache]: Analyzing trace with hash -944687490, now seen corresponding path program 2 times [2021-06-05 05:15:54,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:15:54,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149033575] [2021-06-05 05:15:54,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:15:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:15:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:15:54,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:15:54,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149033575] [2021-06-05 05:15:54,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149033575] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:15:54,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:15:54,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 05:15:54,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976293899] [2021-06-05 05:15:54,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 05:15:54,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:15:54,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 05:15:54,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:15:54,287 INFO L87 Difference]: Start difference. First operand 12865 states and 53759 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:15:54,817 INFO L93 Difference]: Finished difference Result 32685 states and 135133 transitions. [2021-06-05 05:15:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 05:15:54,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:15:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:15:55,080 INFO L225 Difference]: With dead ends: 32685 [2021-06-05 05:15:55,081 INFO L226 Difference]: Without dead ends: 32685 [2021-06-05 05:15:55,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:15:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32685 states. [2021-06-05 05:15:55,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32685 to 16006. [2021-06-05 05:15:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16006 states, 16005 states have (on average 4.138831615120275) internal successors, (66242), 16005 states have internal predecessors, (66242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16006 states to 16006 states and 66242 transitions. [2021-06-05 05:15:56,085 INFO L78 Accepts]: Start accepts. Automaton has 16006 states and 66242 transitions. Word has length 39 [2021-06-05 05:15:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:15:56,086 INFO L482 AbstractCegarLoop]: Abstraction has 16006 states and 66242 transitions. [2021-06-05 05:15:56,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:56,087 INFO L276 IsEmpty]: Start isEmpty. Operand 16006 states and 66242 transitions. [2021-06-05 05:15:56,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:15:56,144 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:15:56,144 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] [2021-06-05 05:15:56,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 05:15:56,144 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:15:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:15:56,146 INFO L82 PathProgramCache]: Analyzing trace with hash -696461990, now seen corresponding path program 3 times [2021-06-05 05:15:56,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:15:56,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486406617] [2021-06-05 05:15:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:15:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:15:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:15:56,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:15:56,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486406617] [2021-06-05 05:15:56,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486406617] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:15:56,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:15:56,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:15:56,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141655490] [2021-06-05 05:15:56,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:15:56,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:15:56,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:15:56,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:15:56,226 INFO L87 Difference]: Start difference. First operand 16006 states and 66242 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:15:56,710 INFO L93 Difference]: Finished difference Result 34910 states and 143500 transitions. [2021-06-05 05:15:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 05:15:56,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:15:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:15:56,993 INFO L225 Difference]: With dead ends: 34910 [2021-06-05 05:15:56,993 INFO L226 Difference]: Without dead ends: 34910 [2021-06-05 05:15:56,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.5ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:15:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34910 states. [2021-06-05 05:15:57,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34910 to 17906. [2021-06-05 05:15:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17906 states, 17905 states have (on average 4.128399888299358) internal successors, (73919), 17905 states have internal predecessors, (73919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17906 states to 17906 states and 73919 transitions. [2021-06-05 05:15:58,026 INFO L78 Accepts]: Start accepts. Automaton has 17906 states and 73919 transitions. Word has length 39 [2021-06-05 05:15:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:15:58,026 INFO L482 AbstractCegarLoop]: Abstraction has 17906 states and 73919 transitions. [2021-06-05 05:15:58,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:58,026 INFO L276 IsEmpty]: Start isEmpty. Operand 17906 states and 73919 transitions. [2021-06-05 05:15:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:15:58,074 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:15:58,075 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] [2021-06-05 05:15:58,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 05:15:58,075 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:15:58,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:15:58,076 INFO L82 PathProgramCache]: Analyzing trace with hash 942509060, now seen corresponding path program 4 times [2021-06-05 05:15:58,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:15:58,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531479242] [2021-06-05 05:15:58,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:15:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:15:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:15:58,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:15:58,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531479242] [2021-06-05 05:15:58,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531479242] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:15:58,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:15:58,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:15:58,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141665617] [2021-06-05 05:15:58,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:15:58,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:15:58,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:15:58,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:15:58,171 INFO L87 Difference]: Start difference. First operand 17906 states and 73919 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:15:58,531 INFO L93 Difference]: Finished difference Result 31098 states and 127412 transitions. [2021-06-05 05:15:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 05:15:58,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:15:58,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:15:58,876 INFO L225 Difference]: With dead ends: 31098 [2021-06-05 05:15:58,876 INFO L226 Difference]: Without dead ends: 31098 [2021-06-05 05:15:58,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:15:59,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31098 states. [2021-06-05 05:15:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31098 to 18162. [2021-06-05 05:15:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18162 states, 18161 states have (on average 4.116017840427289) internal successors, (74751), 18161 states have internal predecessors, (74751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:59,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18162 states to 18162 states and 74751 transitions. [2021-06-05 05:15:59,751 INFO L78 Accepts]: Start accepts. Automaton has 18162 states and 74751 transitions. Word has length 39 [2021-06-05 05:15:59,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:15:59,751 INFO L482 AbstractCegarLoop]: Abstraction has 18162 states and 74751 transitions. [2021-06-05 05:15:59,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:15:59,751 INFO L276 IsEmpty]: Start isEmpty. Operand 18162 states and 74751 transitions. [2021-06-05 05:15:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:15:59,800 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:15:59,800 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] [2021-06-05 05:15:59,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 05:15:59,800 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:15:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:15:59,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1835727168, now seen corresponding path program 5 times [2021-06-05 05:15:59,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:15:59,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640890077] [2021-06-05 05:15:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:15:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:15:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:15:59,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:15:59,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640890077] [2021-06-05 05:15:59,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640890077] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:15:59,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:15:59,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:15:59,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339889603] [2021-06-05 05:15:59,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:15:59,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:15:59,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:15:59,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:15:59,890 INFO L87 Difference]: Start difference. First operand 18162 states and 74751 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:00,295 INFO L93 Difference]: Finished difference Result 36912 states and 149288 transitions. [2021-06-05 05:16:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:16:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:00,656 INFO L225 Difference]: With dead ends: 36912 [2021-06-05 05:16:00,656 INFO L226 Difference]: Without dead ends: 36912 [2021-06-05 05:16:00,685 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36912 states. [2021-06-05 05:16:01,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36912 to 20620. [2021-06-05 05:16:01,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20620 states, 20619 states have (on average 4.04350356467336) internal successors, (83373), 20619 states have internal predecessors, (83373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20620 states to 20620 states and 83373 transitions. [2021-06-05 05:16:01,416 INFO L78 Accepts]: Start accepts. Automaton has 20620 states and 83373 transitions. Word has length 39 [2021-06-05 05:16:01,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:01,417 INFO L482 AbstractCegarLoop]: Abstraction has 20620 states and 83373 transitions. [2021-06-05 05:16:01,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 20620 states and 83373 transitions. [2021-06-05 05:16:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:01,714 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:01,714 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] [2021-06-05 05:16:01,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 05:16:01,729 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:01,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:01,729 INFO L82 PathProgramCache]: Analyzing trace with hash -518665604, now seen corresponding path program 6 times [2021-06-05 05:16:01,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:01,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470550037] [2021-06-05 05:16:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:01,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:01,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470550037] [2021-06-05 05:16:01,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470550037] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:01,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:01,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 05:16:01,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713215309] [2021-06-05 05:16:01,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:16:01,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:01,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:16:01,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:16:01,832 INFO L87 Difference]: Start difference. First operand 20620 states and 83373 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:02,576 INFO L93 Difference]: Finished difference Result 40027 states and 158784 transitions. [2021-06-05 05:16:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:16:02,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:02,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:02,686 INFO L225 Difference]: With dead ends: 40027 [2021-06-05 05:16:02,687 INFO L226 Difference]: Without dead ends: 40027 [2021-06-05 05:16:02,687 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 90.9ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-06-05 05:16:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40027 states. [2021-06-05 05:16:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40027 to 23077. [2021-06-05 05:16:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23077 states, 23076 states have (on average 3.9587016814005893) internal successors, (91351), 23076 states have internal predecessors, (91351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23077 states to 23077 states and 91351 transitions. [2021-06-05 05:16:03,495 INFO L78 Accepts]: Start accepts. Automaton has 23077 states and 91351 transitions. Word has length 39 [2021-06-05 05:16:03,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:03,496 INFO L482 AbstractCegarLoop]: Abstraction has 23077 states and 91351 transitions. [2021-06-05 05:16:03,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:03,496 INFO L276 IsEmpty]: Start isEmpty. Operand 23077 states and 91351 transitions. [2021-06-05 05:16:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:03,545 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:03,545 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] [2021-06-05 05:16:03,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 05:16:03,545 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:03,546 INFO L82 PathProgramCache]: Analyzing trace with hash -942887360, now seen corresponding path program 7 times [2021-06-05 05:16:03,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:03,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193300768] [2021-06-05 05:16:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:03,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:03,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193300768] [2021-06-05 05:16:03,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193300768] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:03,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:03,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 05:16:03,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262582679] [2021-06-05 05:16:03,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 05:16:03,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:03,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 05:16:03,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 05:16:03,631 INFO L87 Difference]: Start difference. First operand 23077 states and 91351 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:03,791 INFO L93 Difference]: Finished difference Result 35393 states and 139274 transitions. [2021-06-05 05:16:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 05:16:03,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:03,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:03,865 INFO L225 Difference]: With dead ends: 35393 [2021-06-05 05:16:03,865 INFO L226 Difference]: Without dead ends: 23425 [2021-06-05 05:16:03,866 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:16:03,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23425 states. [2021-06-05 05:16:04,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23425 to 23425. [2021-06-05 05:16:04,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23425 states, 23424 states have (on average 3.8121584699453552) internal successors, (89296), 23424 states have internal predecessors, (89296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23425 states to 23425 states and 89296 transitions. [2021-06-05 05:16:04,633 INFO L78 Accepts]: Start accepts. Automaton has 23425 states and 89296 transitions. Word has length 39 [2021-06-05 05:16:04,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:04,633 INFO L482 AbstractCegarLoop]: Abstraction has 23425 states and 89296 transitions. [2021-06-05 05:16:04,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:04,634 INFO L276 IsEmpty]: Start isEmpty. Operand 23425 states and 89296 transitions. [2021-06-05 05:16:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:04,684 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:04,684 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] [2021-06-05 05:16:04,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 05:16:04,685 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:04,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:04,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1452946602, now seen corresponding path program 8 times [2021-06-05 05:16:04,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:04,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274762331] [2021-06-05 05:16:04,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:04,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:04,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274762331] [2021-06-05 05:16:04,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274762331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:04,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:04,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:16:04,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774677468] [2021-06-05 05:16:04,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:16:04,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:04,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:16:04,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:16:04,738 INFO L87 Difference]: Start difference. First operand 23425 states and 89296 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:05,315 INFO L93 Difference]: Finished difference Result 41696 states and 157940 transitions. [2021-06-05 05:16:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 05:16:05,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:05,450 INFO L225 Difference]: With dead ends: 41696 [2021-06-05 05:16:05,451 INFO L226 Difference]: Without dead ends: 41642 [2021-06-05 05:16:05,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41642 states. [2021-06-05 05:16:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41642 to 24638. [2021-06-05 05:16:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24638 states, 24637 states have (on average 3.794658440556886) internal successors, (93489), 24637 states have internal predecessors, (93489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24638 states to 24638 states and 93489 transitions. [2021-06-05 05:16:06,244 INFO L78 Accepts]: Start accepts. Automaton has 24638 states and 93489 transitions. Word has length 39 [2021-06-05 05:16:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:06,244 INFO L482 AbstractCegarLoop]: Abstraction has 24638 states and 93489 transitions. [2021-06-05 05:16:06,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 24638 states and 93489 transitions. [2021-06-05 05:16:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:06,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:06,303 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] [2021-06-05 05:16:06,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 05:16:06,303 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:06,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:06,303 INFO L82 PathProgramCache]: Analyzing trace with hash -611468740, now seen corresponding path program 9 times [2021-06-05 05:16:06,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:06,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172514767] [2021-06-05 05:16:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:06,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:06,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172514767] [2021-06-05 05:16:06,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172514767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:06,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:06,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 05:16:06,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066067331] [2021-06-05 05:16:06,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 05:16:06,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 05:16:06,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:16:06,343 INFO L87 Difference]: Start difference. First operand 24638 states and 93489 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:06,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:06,941 INFO L93 Difference]: Finished difference Result 42985 states and 160920 transitions. [2021-06-05 05:16:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 05:16:06,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:06,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:07,037 INFO L225 Difference]: With dead ends: 42985 [2021-06-05 05:16:07,037 INFO L226 Difference]: Without dead ends: 42898 [2021-06-05 05:16:07,037 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:16:07,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42898 states. [2021-06-05 05:16:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42898 to 25620. [2021-06-05 05:16:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25620 states, 25619 states have (on average 3.7593973222998556) internal successors, (96312), 25619 states have internal predecessors, (96312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25620 states to 25620 states and 96312 transitions. [2021-06-05 05:16:07,993 INFO L78 Accepts]: Start accepts. Automaton has 25620 states and 96312 transitions. Word has length 39 [2021-06-05 05:16:07,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:07,993 INFO L482 AbstractCegarLoop]: Abstraction has 25620 states and 96312 transitions. [2021-06-05 05:16:07,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 25620 states and 96312 transitions. [2021-06-05 05:16:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:08,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:08,052 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] [2021-06-05 05:16:08,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 05:16:08,052 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:08,053 INFO L82 PathProgramCache]: Analyzing trace with hash 474296098, now seen corresponding path program 10 times [2021-06-05 05:16:08,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:08,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663053353] [2021-06-05 05:16:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:08,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:08,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663053353] [2021-06-05 05:16:08,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663053353] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:08,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:08,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:16:08,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35548547] [2021-06-05 05:16:08,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:16:08,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:08,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:16:08,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:16:08,125 INFO L87 Difference]: Start difference. First operand 25620 states and 96312 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:08,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:08,421 INFO L93 Difference]: Finished difference Result 43699 states and 163815 transitions. [2021-06-05 05:16:08,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 05:16:08,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:08,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:08,519 INFO L225 Difference]: With dead ends: 43699 [2021-06-05 05:16:08,519 INFO L226 Difference]: Without dead ends: 43663 [2021-06-05 05:16:08,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.9ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:08,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43663 states. [2021-06-05 05:16:09,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43663 to 25389. [2021-06-05 05:16:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25389 states, 25388 states have (on average 3.7583110130770443) internal successors, (95416), 25388 states have internal predecessors, (95416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25389 states to 25389 states and 95416 transitions. [2021-06-05 05:16:09,402 INFO L78 Accepts]: Start accepts. Automaton has 25389 states and 95416 transitions. Word has length 39 [2021-06-05 05:16:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:09,402 INFO L482 AbstractCegarLoop]: Abstraction has 25389 states and 95416 transitions. [2021-06-05 05:16:09,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:09,402 INFO L276 IsEmpty]: Start isEmpty. Operand 25389 states and 95416 transitions. [2021-06-05 05:16:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:09,445 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:09,445 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] [2021-06-05 05:16:09,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 05:16:09,446 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:09,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:09,446 INFO L82 PathProgramCache]: Analyzing trace with hash 74649346, now seen corresponding path program 11 times [2021-06-05 05:16:09,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:09,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330373947] [2021-06-05 05:16:09,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:09,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:09,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330373947] [2021-06-05 05:16:09,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330373947] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:09,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:09,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 05:16:09,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512135179] [2021-06-05 05:16:09,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 05:16:09,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:09,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 05:16:09,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 05:16:09,482 INFO L87 Difference]: Start difference. First operand 25389 states and 95416 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:09,675 INFO L93 Difference]: Finished difference Result 25139 states and 94087 transitions. [2021-06-05 05:16:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 05:16:09,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:09,735 INFO L225 Difference]: With dead ends: 25139 [2021-06-05 05:16:09,735 INFO L226 Difference]: Without dead ends: 25088 [2021-06-05 05:16:09,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:16:09,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25088 states. [2021-06-05 05:16:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25088 to 24839. [2021-06-05 05:16:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24839 states, 24838 states have (on average 3.7560995249214915) internal successors, (93294), 24838 states have internal predecessors, (93294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24839 states to 24839 states and 93294 transitions. [2021-06-05 05:16:10,452 INFO L78 Accepts]: Start accepts. Automaton has 24839 states and 93294 transitions. Word has length 39 [2021-06-05 05:16:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:10,452 INFO L482 AbstractCegarLoop]: Abstraction has 24839 states and 93294 transitions. [2021-06-05 05:16:10,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 24839 states and 93294 transitions. [2021-06-05 05:16:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:10,499 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:10,499 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] [2021-06-05 05:16:10,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 05:16:10,500 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:10,500 INFO L82 PathProgramCache]: Analyzing trace with hash -798849100, now seen corresponding path program 12 times [2021-06-05 05:16:10,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:10,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387862114] [2021-06-05 05:16:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:10,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:10,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387862114] [2021-06-05 05:16:10,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387862114] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:10,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:10,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:16:10,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258331470] [2021-06-05 05:16:10,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:16:10,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:10,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:16:10,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:10,545 INFO L87 Difference]: Start difference. First operand 24839 states and 93294 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:10,947 INFO L93 Difference]: Finished difference Result 43989 states and 162312 transitions. [2021-06-05 05:16:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:16:10,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:10,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:11,049 INFO L225 Difference]: With dead ends: 43989 [2021-06-05 05:16:11,049 INFO L226 Difference]: Without dead ends: 43863 [2021-06-05 05:16:11,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:11,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43863 states. [2021-06-05 05:16:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43863 to 28440. [2021-06-05 05:16:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28440 states, 28439 states have (on average 3.686486866626815) internal successors, (104840), 28439 states have internal predecessors, (104840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:12,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28440 states to 28440 states and 104840 transitions. [2021-06-05 05:16:12,045 INFO L78 Accepts]: Start accepts. Automaton has 28440 states and 104840 transitions. Word has length 39 [2021-06-05 05:16:12,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:12,045 INFO L482 AbstractCegarLoop]: Abstraction has 28440 states and 104840 transitions. [2021-06-05 05:16:12,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:12,045 INFO L276 IsEmpty]: Start isEmpty. Operand 28440 states and 104840 transitions. [2021-06-05 05:16:12,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:12,092 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:12,092 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] [2021-06-05 05:16:12,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 05:16:12,092 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:12,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:12,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1771965296, now seen corresponding path program 13 times [2021-06-05 05:16:12,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:12,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579758025] [2021-06-05 05:16:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:12,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:12,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579758025] [2021-06-05 05:16:12,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579758025] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:12,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:12,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 05:16:12,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682311356] [2021-06-05 05:16:12,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:16:12,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:12,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:16:12,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:16:12,162 INFO L87 Difference]: Start difference. First operand 28440 states and 104840 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:12,594 INFO L93 Difference]: Finished difference Result 42223 states and 154538 transitions. [2021-06-05 05:16:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:16:12,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:12,690 INFO L225 Difference]: With dead ends: 42223 [2021-06-05 05:16:12,691 INFO L226 Difference]: Without dead ends: 42199 [2021-06-05 05:16:12,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 75.1ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:16:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42199 states. [2021-06-05 05:16:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42199 to 28621. [2021-06-05 05:16:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28621 states, 28620 states have (on average 3.675611460517121) internal successors, (105196), 28620 states have internal predecessors, (105196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28621 states to 28621 states and 105196 transitions. [2021-06-05 05:16:13,625 INFO L78 Accepts]: Start accepts. Automaton has 28621 states and 105196 transitions. Word has length 39 [2021-06-05 05:16:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:13,626 INFO L482 AbstractCegarLoop]: Abstraction has 28621 states and 105196 transitions. [2021-06-05 05:16:13,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:13,626 INFO L276 IsEmpty]: Start isEmpty. Operand 28621 states and 105196 transitions. [2021-06-05 05:16:13,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:13,674 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:13,674 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] [2021-06-05 05:16:13,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 05:16:13,674 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:13,674 INFO L82 PathProgramCache]: Analyzing trace with hash -692989772, now seen corresponding path program 14 times [2021-06-05 05:16:13,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:13,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723398411] [2021-06-05 05:16:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:13,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:13,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723398411] [2021-06-05 05:16:13,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723398411] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:13,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:13,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 05:16:13,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359152817] [2021-06-05 05:16:13,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 05:16:13,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 05:16:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 05:16:13,699 INFO L87 Difference]: Start difference. First operand 28621 states and 105196 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:13,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:13,861 INFO L93 Difference]: Finished difference Result 27813 states and 101796 transitions. [2021-06-05 05:16:13,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 05:16:13,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:13,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:13,919 INFO L225 Difference]: With dead ends: 27813 [2021-06-05 05:16:13,919 INFO L226 Difference]: Without dead ends: 27738 [2021-06-05 05:16:13,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:16:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27738 states. [2021-06-05 05:16:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27738 to 27386. [2021-06-05 05:16:14,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27386 states, 27385 states have (on average 3.679496074493336) internal successors, (100763), 27385 states have internal predecessors, (100763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27386 states to 27386 states and 100763 transitions. [2021-06-05 05:16:14,698 INFO L78 Accepts]: Start accepts. Automaton has 27386 states and 100763 transitions. Word has length 39 [2021-06-05 05:16:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:14,698 INFO L482 AbstractCegarLoop]: Abstraction has 27386 states and 100763 transitions. [2021-06-05 05:16:14,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 27386 states and 100763 transitions. [2021-06-05 05:16:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:14,745 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:14,745 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] [2021-06-05 05:16:14,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 05:16:14,745 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:14,746 INFO L82 PathProgramCache]: Analyzing trace with hash -747163012, now seen corresponding path program 15 times [2021-06-05 05:16:14,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:14,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305680391] [2021-06-05 05:16:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:14,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:14,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305680391] [2021-06-05 05:16:14,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305680391] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:14,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:14,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 05:16:14,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162039559] [2021-06-05 05:16:14,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 05:16:14,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:14,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 05:16:14,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:16:14,785 INFO L87 Difference]: Start difference. First operand 27386 states and 100763 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:15,024 INFO L93 Difference]: Finished difference Result 50523 states and 183246 transitions. [2021-06-05 05:16:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 05:16:15,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:15,145 INFO L225 Difference]: With dead ends: 50523 [2021-06-05 05:16:15,145 INFO L226 Difference]: Without dead ends: 50475 [2021-06-05 05:16:15,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:16:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50475 states. [2021-06-05 05:16:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50475 to 27707. [2021-06-05 05:16:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27707 states, 27706 states have (on average 3.667978055294882) internal successors, (101625), 27706 states have internal predecessors, (101625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27707 states to 27707 states and 101625 transitions. [2021-06-05 05:16:16,178 INFO L78 Accepts]: Start accepts. Automaton has 27707 states and 101625 transitions. Word has length 39 [2021-06-05 05:16:16,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:16,178 INFO L482 AbstractCegarLoop]: Abstraction has 27707 states and 101625 transitions. [2021-06-05 05:16:16,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:16,179 INFO L276 IsEmpty]: Start isEmpty. Operand 27707 states and 101625 transitions. [2021-06-05 05:16:16,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:16,227 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:16,228 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] [2021-06-05 05:16:16,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 05:16:16,228 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:16,228 INFO L82 PathProgramCache]: Analyzing trace with hash 301429852, now seen corresponding path program 16 times [2021-06-05 05:16:16,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:16,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420627758] [2021-06-05 05:16:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:16,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:16,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420627758] [2021-06-05 05:16:16,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420627758] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:16,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:16,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 05:16:16,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709923386] [2021-06-05 05:16:16,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 05:16:16,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:16,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 05:16:16,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:16:16,269 INFO L87 Difference]: Start difference. First operand 27707 states and 101625 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:16,494 INFO L93 Difference]: Finished difference Result 39646 states and 142334 transitions. [2021-06-05 05:16:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 05:16:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:16,580 INFO L225 Difference]: With dead ends: 39646 [2021-06-05 05:16:16,580 INFO L226 Difference]: Without dead ends: 39506 [2021-06-05 05:16:16,581 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:16:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39506 states. [2021-06-05 05:16:17,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39506 to 23423. [2021-06-05 05:16:17,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23423 states, 23422 states have (on average 3.5910255315515327) internal successors, (84109), 23422 states have internal predecessors, (84109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23423 states to 23423 states and 84109 transitions. [2021-06-05 05:16:17,512 INFO L78 Accepts]: Start accepts. Automaton has 23423 states and 84109 transitions. Word has length 39 [2021-06-05 05:16:17,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:17,512 INFO L482 AbstractCegarLoop]: Abstraction has 23423 states and 84109 transitions. [2021-06-05 05:16:17,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 23423 states and 84109 transitions. [2021-06-05 05:16:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:17,544 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:17,545 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] [2021-06-05 05:16:17,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 05:16:17,545 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:17,545 INFO L82 PathProgramCache]: Analyzing trace with hash -2132816678, now seen corresponding path program 17 times [2021-06-05 05:16:17,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:17,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303627900] [2021-06-05 05:16:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:17,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:17,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303627900] [2021-06-05 05:16:17,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303627900] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:17,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:17,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:16:17,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944446511] [2021-06-05 05:16:17,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:16:17,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:17,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:16:17,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:16:17,594 INFO L87 Difference]: Start difference. First operand 23423 states and 84109 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:17,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:17,861 INFO L93 Difference]: Finished difference Result 40941 states and 145659 transitions. [2021-06-05 05:16:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 05:16:17,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:17,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:17,940 INFO L225 Difference]: With dead ends: 40941 [2021-06-05 05:16:17,941 INFO L226 Difference]: Without dead ends: 40659 [2021-06-05 05:16:17,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:18,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40659 states. [2021-06-05 05:16:18,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40659 to 24350. [2021-06-05 05:16:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24350 states, 24349 states have (on average 3.5688118608567088) internal successors, (86897), 24349 states have internal predecessors, (86897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24350 states to 24350 states and 86897 transitions. [2021-06-05 05:16:18,801 INFO L78 Accepts]: Start accepts. Automaton has 24350 states and 86897 transitions. Word has length 39 [2021-06-05 05:16:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:18,801 INFO L482 AbstractCegarLoop]: Abstraction has 24350 states and 86897 transitions. [2021-06-05 05:16:18,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 24350 states and 86897 transitions. [2021-06-05 05:16:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:18,839 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:18,839 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] [2021-06-05 05:16:18,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 05:16:18,840 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:18,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:18,840 INFO L82 PathProgramCache]: Analyzing trace with hash 619948732, now seen corresponding path program 18 times [2021-06-05 05:16:18,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:18,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426940263] [2021-06-05 05:16:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:18,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:18,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426940263] [2021-06-05 05:16:18,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426940263] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:18,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:18,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:16:18,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676862466] [2021-06-05 05:16:18,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:16:18,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:18,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:16:18,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:18,896 INFO L87 Difference]: Start difference. First operand 24350 states and 86897 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:19,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:19,206 INFO L93 Difference]: Finished difference Result 41722 states and 144495 transitions. [2021-06-05 05:16:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:16:19,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:19,286 INFO L225 Difference]: With dead ends: 41722 [2021-06-05 05:16:19,287 INFO L226 Difference]: Without dead ends: 41134 [2021-06-05 05:16:19,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41134 states. [2021-06-05 05:16:20,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41134 to 24602. [2021-06-05 05:16:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24602 states, 24601 states have (on average 3.503231575952197) internal successors, (86183), 24601 states have internal predecessors, (86183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24602 states to 24602 states and 86183 transitions. [2021-06-05 05:16:20,158 INFO L78 Accepts]: Start accepts. Automaton has 24602 states and 86183 transitions. Word has length 39 [2021-06-05 05:16:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:20,158 INFO L482 AbstractCegarLoop]: Abstraction has 24602 states and 86183 transitions. [2021-06-05 05:16:20,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 24602 states and 86183 transitions. [2021-06-05 05:16:20,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:20,197 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:20,197 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] [2021-06-05 05:16:20,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 05:16:20,197 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:20,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:20,197 INFO L82 PathProgramCache]: Analyzing trace with hash -262188358, now seen corresponding path program 19 times [2021-06-05 05:16:20,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:20,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48604916] [2021-06-05 05:16:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:20,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:20,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48604916] [2021-06-05 05:16:20,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48604916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:20,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:20,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:16:20,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470990653] [2021-06-05 05:16:20,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:16:20,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:20,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:16:20,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:16:20,232 INFO L87 Difference]: Start difference. First operand 24602 states and 86183 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:20,456 INFO L93 Difference]: Finished difference Result 39683 states and 136545 transitions. [2021-06-05 05:16:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 05:16:20,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:20,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:20,536 INFO L225 Difference]: With dead ends: 39683 [2021-06-05 05:16:20,536 INFO L226 Difference]: Without dead ends: 39331 [2021-06-05 05:16:20,536 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:20,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39331 states. [2021-06-05 05:16:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39331 to 23826. [2021-06-05 05:16:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23826 states, 23825 states have (on average 3.4768520461699897) internal successors, (82836), 23825 states have internal predecessors, (82836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:21,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23826 states to 23826 states and 82836 transitions. [2021-06-05 05:16:21,369 INFO L78 Accepts]: Start accepts. Automaton has 23826 states and 82836 transitions. Word has length 39 [2021-06-05 05:16:21,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:21,369 INFO L482 AbstractCegarLoop]: Abstraction has 23826 states and 82836 transitions. [2021-06-05 05:16:21,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:21,369 INFO L276 IsEmpty]: Start isEmpty. Operand 23826 states and 82836 transitions. [2021-06-05 05:16:21,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:21,403 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:21,404 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] [2021-06-05 05:16:21,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 05:16:21,404 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:21,404 INFO L82 PathProgramCache]: Analyzing trace with hash -999623524, now seen corresponding path program 20 times [2021-06-05 05:16:21,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:21,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284939607] [2021-06-05 05:16:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:21,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:21,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284939607] [2021-06-05 05:16:21,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284939607] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:21,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:21,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:16:21,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877266135] [2021-06-05 05:16:21,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:16:21,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:21,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:16:21,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:21,450 INFO L87 Difference]: Start difference. First operand 23826 states and 82836 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:21,787 INFO L93 Difference]: Finished difference Result 36259 states and 121650 transitions. [2021-06-05 05:16:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:16:21,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:21,862 INFO L225 Difference]: With dead ends: 36259 [2021-06-05 05:16:21,862 INFO L226 Difference]: Without dead ends: 35323 [2021-06-05 05:16:21,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:21,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35323 states. [2021-06-05 05:16:22,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35323 to 21699. [2021-06-05 05:16:22,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21699 states, 21698 states have (on average 3.39409162134759) internal successors, (73645), 21698 states have internal predecessors, (73645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21699 states to 21699 states and 73645 transitions. [2021-06-05 05:16:22,411 INFO L78 Accepts]: Start accepts. Automaton has 21699 states and 73645 transitions. Word has length 39 [2021-06-05 05:16:22,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:22,411 INFO L482 AbstractCegarLoop]: Abstraction has 21699 states and 73645 transitions. [2021-06-05 05:16:22,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 21699 states and 73645 transitions. [2021-06-05 05:16:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:22,768 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:22,768 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] [2021-06-05 05:16:22,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 05:16:22,769 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:22,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:22,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1489406878, now seen corresponding path program 21 times [2021-06-05 05:16:22,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:22,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248966194] [2021-06-05 05:16:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:22,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:22,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248966194] [2021-06-05 05:16:22,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248966194] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:22,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:22,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 05:16:22,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060801963] [2021-06-05 05:16:22,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 05:16:22,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:22,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 05:16:22,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:16:22,841 INFO L87 Difference]: Start difference. First operand 21699 states and 73645 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:23,031 INFO L93 Difference]: Finished difference Result 34469 states and 114405 transitions. [2021-06-05 05:16:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 05:16:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:23,101 INFO L225 Difference]: With dead ends: 34469 [2021-06-05 05:16:23,101 INFO L226 Difference]: Without dead ends: 34285 [2021-06-05 05:16:23,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:16:23,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34285 states. [2021-06-05 05:16:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34285 to 20585. [2021-06-05 05:16:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20585 states, 20584 states have (on average 3.3424504469490866) internal successors, (68801), 20584 states have internal predecessors, (68801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20585 states to 20585 states and 68801 transitions. [2021-06-05 05:16:23,554 INFO L78 Accepts]: Start accepts. Automaton has 20585 states and 68801 transitions. Word has length 39 [2021-06-05 05:16:23,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:23,554 INFO L482 AbstractCegarLoop]: Abstraction has 20585 states and 68801 transitions. [2021-06-05 05:16:23,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 20585 states and 68801 transitions. [2021-06-05 05:16:23,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:23,583 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:23,583 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] [2021-06-05 05:16:23,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 05:16:23,584 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:23,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:23,584 INFO L82 PathProgramCache]: Analyzing trace with hash 921984860, now seen corresponding path program 22 times [2021-06-05 05:16:23,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:23,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747732991] [2021-06-05 05:16:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:23,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:23,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747732991] [2021-06-05 05:16:23,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747732991] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:23,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:23,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:16:23,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582123212] [2021-06-05 05:16:23,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:16:23,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:23,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:16:23,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:23,624 INFO L87 Difference]: Start difference. First operand 20585 states and 68801 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:23,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:23,930 INFO L93 Difference]: Finished difference Result 35148 states and 115453 transitions. [2021-06-05 05:16:23,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:16:23,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:23,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:23,994 INFO L225 Difference]: With dead ends: 35148 [2021-06-05 05:16:23,994 INFO L226 Difference]: Without dead ends: 34004 [2021-06-05 05:16:23,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:24,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34004 states. [2021-06-05 05:16:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34004 to 18802. [2021-06-05 05:16:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18802 states, 18801 states have (on average 3.3137067177277806) internal successors, (62301), 18801 states have internal predecessors, (62301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18802 states to 18802 states and 62301 transitions. [2021-06-05 05:16:24,572 INFO L78 Accepts]: Start accepts. Automaton has 18802 states and 62301 transitions. Word has length 39 [2021-06-05 05:16:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:24,573 INFO L482 AbstractCegarLoop]: Abstraction has 18802 states and 62301 transitions. [2021-06-05 05:16:24,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 18802 states and 62301 transitions. [2021-06-05 05:16:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:24,598 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:24,598 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] [2021-06-05 05:16:24,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 05:16:24,598 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:24,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:24,598 INFO L82 PathProgramCache]: Analyzing trace with hash 84428698, now seen corresponding path program 23 times [2021-06-05 05:16:24,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:24,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702009932] [2021-06-05 05:16:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:24,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:24,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702009932] [2021-06-05 05:16:24,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702009932] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:24,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:24,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:16:24,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271924263] [2021-06-05 05:16:24,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:16:24,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:24,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:16:24,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:24,665 INFO L87 Difference]: Start difference. First operand 18802 states and 62301 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:24,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:24,950 INFO L93 Difference]: Finished difference Result 30242 states and 99222 transitions. [2021-06-05 05:16:24,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:16:24,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:24,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:25,008 INFO L225 Difference]: With dead ends: 30242 [2021-06-05 05:16:25,008 INFO L226 Difference]: Without dead ends: 30074 [2021-06-05 05:16:25,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:16:25,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30074 states. [2021-06-05 05:16:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30074 to 18728. [2021-06-05 05:16:25,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18728 states, 18727 states have (on average 3.3072035029636355) internal successors, (61934), 18727 states have internal predecessors, (61934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18728 states to 18728 states and 61934 transitions. [2021-06-05 05:16:25,578 INFO L78 Accepts]: Start accepts. Automaton has 18728 states and 61934 transitions. Word has length 39 [2021-06-05 05:16:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:25,578 INFO L482 AbstractCegarLoop]: Abstraction has 18728 states and 61934 transitions. [2021-06-05 05:16:25,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 18728 states and 61934 transitions. [2021-06-05 05:16:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:25,603 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:25,603 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] [2021-06-05 05:16:25,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 05:16:25,603 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:25,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1685327770, now seen corresponding path program 24 times [2021-06-05 05:16:25,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:25,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345778809] [2021-06-05 05:16:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:25,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:25,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345778809] [2021-06-05 05:16:25,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345778809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:25,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:25,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 05:16:25,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275971424] [2021-06-05 05:16:25,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:16:25,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:25,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:16:25,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:16:25,651 INFO L87 Difference]: Start difference. First operand 18728 states and 61934 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:25,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:25,960 INFO L93 Difference]: Finished difference Result 29724 states and 97345 transitions. [2021-06-05 05:16:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:16:25,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:25,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:26,028 INFO L225 Difference]: With dead ends: 29724 [2021-06-05 05:16:26,028 INFO L226 Difference]: Without dead ends: 29232 [2021-06-05 05:16:26,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 45.3ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:16:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29232 states. [2021-06-05 05:16:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29232 to 18276. [2021-06-05 05:16:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18276 states, 18275 states have (on average 3.3015047879616963) internal successors, (60335), 18275 states have internal predecessors, (60335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18276 states to 18276 states and 60335 transitions. [2021-06-05 05:16:26,409 INFO L78 Accepts]: Start accepts. Automaton has 18276 states and 60335 transitions. Word has length 39 [2021-06-05 05:16:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:26,409 INFO L482 AbstractCegarLoop]: Abstraction has 18276 states and 60335 transitions. [2021-06-05 05:16:26,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 18276 states and 60335 transitions. [2021-06-05 05:16:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:26,434 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:26,434 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] [2021-06-05 05:16:26,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 05:16:26,434 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:26,435 INFO L82 PathProgramCache]: Analyzing trace with hash 6385336, now seen corresponding path program 25 times [2021-06-05 05:16:26,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:26,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186149612] [2021-06-05 05:16:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:26,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:26,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186149612] [2021-06-05 05:16:26,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186149612] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:26,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:26,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:16:26,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987430667] [2021-06-05 05:16:26,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:16:26,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:26,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:16:26,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:16:26,497 INFO L87 Difference]: Start difference. First operand 18276 states and 60335 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:26,838 INFO L93 Difference]: Finished difference Result 29259 states and 95348 transitions. [2021-06-05 05:16:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:16:26,839 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:27,150 INFO L225 Difference]: With dead ends: 29259 [2021-06-05 05:16:27,151 INFO L226 Difference]: Without dead ends: 28821 [2021-06-05 05:16:27,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 72.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:16:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2021-06-05 05:16:27,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 18412. [2021-06-05 05:16:27,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18412 states, 18411 states have (on average 3.280647439031014) internal successors, (60400), 18411 states have internal predecessors, (60400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18412 states to 18412 states and 60400 transitions. [2021-06-05 05:16:27,553 INFO L78 Accepts]: Start accepts. Automaton has 18412 states and 60400 transitions. Word has length 39 [2021-06-05 05:16:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:27,553 INFO L482 AbstractCegarLoop]: Abstraction has 18412 states and 60400 transitions. [2021-06-05 05:16:27,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 18412 states and 60400 transitions. [2021-06-05 05:16:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:27,578 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:27,578 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] [2021-06-05 05:16:27,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 05:16:27,578 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:27,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1165798022, now seen corresponding path program 26 times [2021-06-05 05:16:27,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:27,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239290667] [2021-06-05 05:16:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:27,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:27,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239290667] [2021-06-05 05:16:27,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239290667] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:27,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:27,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:16:27,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880341703] [2021-06-05 05:16:27,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:16:27,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:27,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:16:27,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:27,628 INFO L87 Difference]: Start difference. First operand 18412 states and 60400 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:27,873 INFO L93 Difference]: Finished difference Result 30084 states and 97312 transitions. [2021-06-05 05:16:27,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:16:27,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:27,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:27,928 INFO L225 Difference]: With dead ends: 30084 [2021-06-05 05:16:27,928 INFO L226 Difference]: Without dead ends: 29828 [2021-06-05 05:16:27,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:16:27,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29828 states. [2021-06-05 05:16:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29828 to 18388. [2021-06-05 05:16:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18388 states, 18387 states have (on average 3.2692663294719093) internal successors, (60112), 18387 states have internal predecessors, (60112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18388 states to 18388 states and 60112 transitions. [2021-06-05 05:16:28,495 INFO L78 Accepts]: Start accepts. Automaton has 18388 states and 60112 transitions. Word has length 39 [2021-06-05 05:16:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:28,495 INFO L482 AbstractCegarLoop]: Abstraction has 18388 states and 60112 transitions. [2021-06-05 05:16:28,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:28,495 INFO L276 IsEmpty]: Start isEmpty. Operand 18388 states and 60112 transitions. [2021-06-05 05:16:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:28,521 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:28,521 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] [2021-06-05 05:16:28,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 05:16:28,522 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:28,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1239867770, now seen corresponding path program 27 times [2021-06-05 05:16:28,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:28,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575074561] [2021-06-05 05:16:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:28,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:28,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:28,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575074561] [2021-06-05 05:16:28,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575074561] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:28,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:28,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 05:16:28,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056841393] [2021-06-05 05:16:28,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:16:28,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:28,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:16:28,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:16:28,567 INFO L87 Difference]: Start difference. First operand 18388 states and 60112 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:28,847 INFO L93 Difference]: Finished difference Result 29768 states and 96152 transitions. [2021-06-05 05:16:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:16:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:28,903 INFO L225 Difference]: With dead ends: 29768 [2021-06-05 05:16:28,904 INFO L226 Difference]: Without dead ends: 28672 [2021-06-05 05:16:28,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:16:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28672 states. [2021-06-05 05:16:29,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28672 to 17734. [2021-06-05 05:16:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17734 states, 17733 states have (on average 3.2457564991823156) internal successors, (57557), 17733 states have internal predecessors, (57557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17734 states to 17734 states and 57557 transitions. [2021-06-05 05:16:29,250 INFO L78 Accepts]: Start accepts. Automaton has 17734 states and 57557 transitions. Word has length 39 [2021-06-05 05:16:29,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:29,250 INFO L482 AbstractCegarLoop]: Abstraction has 17734 states and 57557 transitions. [2021-06-05 05:16:29,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:29,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17734 states and 57557 transitions. [2021-06-05 05:16:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:29,273 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:29,273 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] [2021-06-05 05:16:29,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 05:16:29,274 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:29,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:29,274 INFO L82 PathProgramCache]: Analyzing trace with hash 492882072, now seen corresponding path program 28 times [2021-06-05 05:16:29,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:29,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323616901] [2021-06-05 05:16:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:29,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:29,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323616901] [2021-06-05 05:16:29,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323616901] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:29,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:29,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:16:29,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333778760] [2021-06-05 05:16:29,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:16:29,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:29,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:16:29,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:16:29,318 INFO L87 Difference]: Start difference. First operand 17734 states and 57557 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:29,713 INFO L93 Difference]: Finished difference Result 28772 states and 92301 transitions. [2021-06-05 05:16:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:16:29,713 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:29,762 INFO L225 Difference]: With dead ends: 28772 [2021-06-05 05:16:29,763 INFO L226 Difference]: Without dead ends: 27282 [2021-06-05 05:16:29,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:16:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27282 states. [2021-06-05 05:16:30,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27282 to 16786. [2021-06-05 05:16:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16786 states, 16785 states have (on average 3.2374739350610664) internal successors, (54341), 16785 states have internal predecessors, (54341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16786 states to 16786 states and 54341 transitions. [2021-06-05 05:16:30,271 INFO L78 Accepts]: Start accepts. Automaton has 16786 states and 54341 transitions. Word has length 39 [2021-06-05 05:16:30,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:30,271 INFO L482 AbstractCegarLoop]: Abstraction has 16786 states and 54341 transitions. [2021-06-05 05:16:30,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 16786 states and 54341 transitions. [2021-06-05 05:16:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:30,294 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:30,295 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] [2021-06-05 05:16:30,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 05:16:30,295 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash -652913060, now seen corresponding path program 29 times [2021-06-05 05:16:30,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:30,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094452398] [2021-06-05 05:16:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:30,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:30,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094452398] [2021-06-05 05:16:30,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094452398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:30,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:30,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:16:30,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900815531] [2021-06-05 05:16:30,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:16:30,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:30,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:16:30,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:16:30,343 INFO L87 Difference]: Start difference. First operand 16786 states and 54341 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:30,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:30,718 INFO L93 Difference]: Finished difference Result 27715 states and 88963 transitions. [2021-06-05 05:16:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:16:30,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:30,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:30,765 INFO L225 Difference]: With dead ends: 27715 [2021-06-05 05:16:30,766 INFO L226 Difference]: Without dead ends: 26709 [2021-06-05 05:16:30,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:16:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26709 states. [2021-06-05 05:16:31,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26709 to 16048. [2021-06-05 05:16:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16048 states, 16047 states have (on average 3.2265220913566397) internal successors, (51776), 16047 states have internal predecessors, (51776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16048 states to 16048 states and 51776 transitions. [2021-06-05 05:16:31,073 INFO L78 Accepts]: Start accepts. Automaton has 16048 states and 51776 transitions. Word has length 39 [2021-06-05 05:16:31,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:31,073 INFO L482 AbstractCegarLoop]: Abstraction has 16048 states and 51776 transitions. [2021-06-05 05:16:31,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 16048 states and 51776 transitions. [2021-06-05 05:16:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:31,095 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:31,095 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] [2021-06-05 05:16:31,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 05:16:31,096 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:31,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:31,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1990404212, now seen corresponding path program 30 times [2021-06-05 05:16:31,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:31,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241959036] [2021-06-05 05:16:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:31,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:31,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241959036] [2021-06-05 05:16:31,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241959036] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:31,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:31,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 05:16:31,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746438860] [2021-06-05 05:16:31,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 05:16:31,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:31,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 05:16:31,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:16:31,129 INFO L87 Difference]: Start difference. First operand 16048 states and 51776 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:31,387 INFO L93 Difference]: Finished difference Result 26537 states and 84145 transitions. [2021-06-05 05:16:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 05:16:31,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:31,442 INFO L225 Difference]: With dead ends: 26537 [2021-06-05 05:16:31,442 INFO L226 Difference]: Without dead ends: 26193 [2021-06-05 05:16:31,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:16:31,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26193 states. [2021-06-05 05:16:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26193 to 15396. [2021-06-05 05:16:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15396 states, 15395 states have (on average 3.2042871062033127) internal successors, (49330), 15395 states have internal predecessors, (49330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15396 states to 15396 states and 49330 transitions. [2021-06-05 05:16:31,817 INFO L78 Accepts]: Start accepts. Automaton has 15396 states and 49330 transitions. Word has length 39 [2021-06-05 05:16:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:31,818 INFO L482 AbstractCegarLoop]: Abstraction has 15396 states and 49330 transitions. [2021-06-05 05:16:31,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:31,818 INFO L276 IsEmpty]: Start isEmpty. Operand 15396 states and 49330 transitions. [2021-06-05 05:16:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:31,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:31,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:16:31,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 05:16:31,844 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:31,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:31,845 INFO L82 PathProgramCache]: Analyzing trace with hash -486861366, now seen corresponding path program 31 times [2021-06-05 05:16:31,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:31,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353747755] [2021-06-05 05:16:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:31,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:31,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353747755] [2021-06-05 05:16:31,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353747755] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:31,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:31,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:16:31,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676043043] [2021-06-05 05:16:31,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:16:31,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:31,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:16:31,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:31,887 INFO L87 Difference]: Start difference. First operand 15396 states and 49330 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:32,106 INFO L93 Difference]: Finished difference Result 19582 states and 58220 transitions. [2021-06-05 05:16:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:16:32,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:32,133 INFO L225 Difference]: With dead ends: 19582 [2021-06-05 05:16:32,133 INFO L226 Difference]: Without dead ends: 18047 [2021-06-05 05:16:32,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18047 states. [2021-06-05 05:16:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18047 to 10863. [2021-06-05 05:16:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10862 states have (on average 3.029736696740932) internal successors, (32909), 10862 states have internal predecessors, (32909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:32,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 32909 transitions. [2021-06-05 05:16:32,320 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 32909 transitions. Word has length 39 [2021-06-05 05:16:32,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:32,320 INFO L482 AbstractCegarLoop]: Abstraction has 10863 states and 32909 transitions. [2021-06-05 05:16:32,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 32909 transitions. [2021-06-05 05:16:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:32,333 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:32,333 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] [2021-06-05 05:16:32,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 05:16:32,334 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:32,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:32,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1712472694, now seen corresponding path program 32 times [2021-06-05 05:16:32,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:32,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299877318] [2021-06-05 05:16:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:32,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:32,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299877318] [2021-06-05 05:16:32,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299877318] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:32,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:32,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 05:16:32,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559446587] [2021-06-05 05:16:32,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:16:32,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:32,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:16:32,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:16:32,382 INFO L87 Difference]: Start difference. First operand 10863 states and 32909 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:32,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:32,592 INFO L93 Difference]: Finished difference Result 16060 states and 47771 transitions. [2021-06-05 05:16:32,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:16:32,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:32,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:32,630 INFO L225 Difference]: With dead ends: 16060 [2021-06-05 05:16:32,631 INFO L226 Difference]: Without dead ends: 15380 [2021-06-05 05:16:32,631 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:16:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15380 states. [2021-06-05 05:16:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15380 to 10289. [2021-06-05 05:16:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10289 states, 10288 states have (on average 3.010303265940902) internal successors, (30970), 10288 states have internal predecessors, (30970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:32,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 30970 transitions. [2021-06-05 05:16:32,847 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 30970 transitions. Word has length 39 [2021-06-05 05:16:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:32,847 INFO L482 AbstractCegarLoop]: Abstraction has 10289 states and 30970 transitions. [2021-06-05 05:16:32,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 30970 transitions. [2021-06-05 05:16:32,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:32,860 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:32,861 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] [2021-06-05 05:16:32,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 05:16:32,861 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:32,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:32,861 INFO L82 PathProgramCache]: Analyzing trace with hash -12539988, now seen corresponding path program 33 times [2021-06-05 05:16:32,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:32,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840874909] [2021-06-05 05:16:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:32,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:32,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840874909] [2021-06-05 05:16:32,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840874909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:32,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:32,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:16:32,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825317840] [2021-06-05 05:16:32,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:16:32,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:32,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:16:32,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:16:32,914 INFO L87 Difference]: Start difference. First operand 10289 states and 30970 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:33,228 INFO L93 Difference]: Finished difference Result 14404 states and 42007 transitions. [2021-06-05 05:16:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:16:33,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:33,255 INFO L225 Difference]: With dead ends: 14404 [2021-06-05 05:16:33,256 INFO L226 Difference]: Without dead ends: 13806 [2021-06-05 05:16:33,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:16:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13806 states. [2021-06-05 05:16:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13806 to 9515. [2021-06-05 05:16:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9515 states, 9514 states have (on average 2.974248475930208) internal successors, (28297), 9514 states have internal predecessors, (28297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9515 states to 9515 states and 28297 transitions. [2021-06-05 05:16:33,464 INFO L78 Accepts]: Start accepts. Automaton has 9515 states and 28297 transitions. Word has length 39 [2021-06-05 05:16:33,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:33,464 INFO L482 AbstractCegarLoop]: Abstraction has 9515 states and 28297 transitions. [2021-06-05 05:16:33,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 9515 states and 28297 transitions. [2021-06-05 05:16:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:33,478 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:33,479 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] [2021-06-05 05:16:33,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 05:16:33,479 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:33,479 INFO L82 PathProgramCache]: Analyzing trace with hash -467836166, now seen corresponding path program 34 times [2021-06-05 05:16:33,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:33,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879041661] [2021-06-05 05:16:33,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:33,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:33,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879041661] [2021-06-05 05:16:33,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879041661] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:33,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:33,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:16:33,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749139822] [2021-06-05 05:16:33,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:16:33,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:33,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:16:33,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:33,531 INFO L87 Difference]: Start difference. First operand 9515 states and 28297 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:33,778 INFO L93 Difference]: Finished difference Result 14734 states and 43845 transitions. [2021-06-05 05:16:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:16:33,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:33,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:33,801 INFO L225 Difference]: With dead ends: 14734 [2021-06-05 05:16:33,801 INFO L226 Difference]: Without dead ends: 14686 [2021-06-05 05:16:33,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14686 states. [2021-06-05 05:16:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14686 to 9376. [2021-06-05 05:16:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 9375 states have (on average 2.9634133333333335) internal successors, (27782), 9375 states have internal predecessors, (27782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 27782 transitions. [2021-06-05 05:16:33,962 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 27782 transitions. Word has length 39 [2021-06-05 05:16:33,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:33,962 INFO L482 AbstractCegarLoop]: Abstraction has 9376 states and 27782 transitions. [2021-06-05 05:16:33,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 27782 transitions. [2021-06-05 05:16:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:33,973 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:33,973 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] [2021-06-05 05:16:33,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 05:16:33,973 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:33,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:33,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1133062906, now seen corresponding path program 35 times [2021-06-05 05:16:33,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:33,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413011588] [2021-06-05 05:16:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:34,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:34,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413011588] [2021-06-05 05:16:34,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413011588] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:34,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:34,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 05:16:34,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940889392] [2021-06-05 05:16:34,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:16:34,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:34,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:16:34,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:16:34,015 INFO L87 Difference]: Start difference. First operand 9376 states and 27782 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:34,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:34,271 INFO L93 Difference]: Finished difference Result 14599 states and 43322 transitions. [2021-06-05 05:16:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:16:34,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:34,293 INFO L225 Difference]: With dead ends: 14599 [2021-06-05 05:16:34,293 INFO L226 Difference]: Without dead ends: 14479 [2021-06-05 05:16:34,293 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 52.7ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:16:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2021-06-05 05:16:34,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 9268. [2021-06-05 05:16:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 9267 states have (on average 2.9584547318441783) internal successors, (27416), 9267 states have internal predecessors, (27416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 27416 transitions. [2021-06-05 05:16:34,485 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 27416 transitions. Word has length 39 [2021-06-05 05:16:34,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:34,485 INFO L482 AbstractCegarLoop]: Abstraction has 9268 states and 27416 transitions. [2021-06-05 05:16:34,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 27416 transitions. [2021-06-05 05:16:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:34,497 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:34,497 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] [2021-06-05 05:16:34,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 05:16:34,497 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:34,498 INFO L82 PathProgramCache]: Analyzing trace with hash -545879528, now seen corresponding path program 36 times [2021-06-05 05:16:34,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:34,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094838930] [2021-06-05 05:16:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:34,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:34,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094838930] [2021-06-05 05:16:34,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094838930] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:34,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:34,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:16:34,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103406714] [2021-06-05 05:16:34,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:16:34,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:34,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:16:34,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:16:34,548 INFO L87 Difference]: Start difference. First operand 9268 states and 27416 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:34,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:34,897 INFO L93 Difference]: Finished difference Result 14208 states and 42268 transitions. [2021-06-05 05:16:34,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:16:34,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:34,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:34,925 INFO L225 Difference]: With dead ends: 14208 [2021-06-05 05:16:34,925 INFO L226 Difference]: Without dead ends: 14016 [2021-06-05 05:16:34,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:16:34,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2021-06-05 05:16:35,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 9164. [2021-06-05 05:16:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 9163 states have (on average 2.960820691913129) internal successors, (27130), 9163 states have internal predecessors, (27130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 27130 transitions. [2021-06-05 05:16:35,101 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 27130 transitions. Word has length 39 [2021-06-05 05:16:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:35,101 INFO L482 AbstractCegarLoop]: Abstraction has 9164 states and 27130 transitions. [2021-06-05 05:16:35,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 27130 transitions. [2021-06-05 05:16:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:35,111 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:35,111 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] [2021-06-05 05:16:35,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 05:16:35,111 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:35,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:35,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1948403812, now seen corresponding path program 37 times [2021-06-05 05:16:35,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:35,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081023974] [2021-06-05 05:16:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:35,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:35,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081023974] [2021-06-05 05:16:35,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081023974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:35,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:35,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 05:16:35,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767664848] [2021-06-05 05:16:35,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 05:16:35,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:35,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 05:16:35,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:35,165 INFO L87 Difference]: Start difference. First operand 9164 states and 27130 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:35,499 INFO L93 Difference]: Finished difference Result 14134 states and 42012 transitions. [2021-06-05 05:16:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:16:35,499 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:35,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:35,522 INFO L225 Difference]: With dead ends: 14134 [2021-06-05 05:16:35,522 INFO L226 Difference]: Without dead ends: 13966 [2021-06-05 05:16:35,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:16:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13966 states. [2021-06-05 05:16:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13966 to 9158. [2021-06-05 05:16:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9158 states, 9157 states have (on average 2.9588293109096866) internal successors, (27094), 9157 states have internal predecessors, (27094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:35,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9158 states to 9158 states and 27094 transitions. [2021-06-05 05:16:35,671 INFO L78 Accepts]: Start accepts. Automaton has 9158 states and 27094 transitions. Word has length 39 [2021-06-05 05:16:35,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:35,671 INFO L482 AbstractCegarLoop]: Abstraction has 9158 states and 27094 transitions. [2021-06-05 05:16:35,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:35,671 INFO L276 IsEmpty]: Start isEmpty. Operand 9158 states and 27094 transitions. [2021-06-05 05:16:35,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:35,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:35,682 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] [2021-06-05 05:16:35,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 05:16:35,683 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:35,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:35,683 INFO L82 PathProgramCache]: Analyzing trace with hash -426772262, now seen corresponding path program 38 times [2021-06-05 05:16:35,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:35,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686182464] [2021-06-05 05:16:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:35,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:35,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686182464] [2021-06-05 05:16:35,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686182464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:35,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:35,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:16:35,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483759295] [2021-06-05 05:16:35,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:16:35,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:35,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:16:35,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:35,718 INFO L87 Difference]: Start difference. First operand 9158 states and 27094 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:35,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:35,970 INFO L93 Difference]: Finished difference Result 14594 states and 43056 transitions. [2021-06-05 05:16:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:16:35,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:35,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:35,997 INFO L225 Difference]: With dead ends: 14594 [2021-06-05 05:16:35,998 INFO L226 Difference]: Without dead ends: 14466 [2021-06-05 05:16:35,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 33.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:36,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14466 states. [2021-06-05 05:16:36,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 9094. [2021-06-05 05:16:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 9093 states have (on average 2.9493016606180578) internal successors, (26818), 9093 states have internal predecessors, (26818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 26818 transitions. [2021-06-05 05:16:36,202 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 26818 transitions. Word has length 39 [2021-06-05 05:16:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:36,203 INFO L482 AbstractCegarLoop]: Abstraction has 9094 states and 26818 transitions. [2021-06-05 05:16:36,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 26818 transitions. [2021-06-05 05:16:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:36,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:36,217 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] [2021-06-05 05:16:36,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 05:16:36,217 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:36,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1978893530, now seen corresponding path program 39 times [2021-06-05 05:16:36,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:36,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609712456] [2021-06-05 05:16:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:36,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:36,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609712456] [2021-06-05 05:16:36,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609712456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:36,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:36,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 05:16:36,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142815737] [2021-06-05 05:16:36,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:16:36,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:36,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:16:36,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:16:36,268 INFO L87 Difference]: Start difference. First operand 9094 states and 26818 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:36,572 INFO L93 Difference]: Finished difference Result 14494 states and 42702 transitions. [2021-06-05 05:16:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:16:36,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:36,600 INFO L225 Difference]: With dead ends: 14494 [2021-06-05 05:16:36,600 INFO L226 Difference]: Without dead ends: 14022 [2021-06-05 05:16:36,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:16:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2021-06-05 05:16:36,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 8890. [2021-06-05 05:16:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8890 states, 8889 states have (on average 2.937338283271459) internal successors, (26110), 8889 states have internal predecessors, (26110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8890 states to 8890 states and 26110 transitions. [2021-06-05 05:16:36,802 INFO L78 Accepts]: Start accepts. Automaton has 8890 states and 26110 transitions. Word has length 39 [2021-06-05 05:16:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:36,802 INFO L482 AbstractCegarLoop]: Abstraction has 8890 states and 26110 transitions. [2021-06-05 05:16:36,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 8890 states and 26110 transitions. [2021-06-05 05:16:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:36,815 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:36,815 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] [2021-06-05 05:16:36,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 05:16:36,816 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:36,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:36,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1231907832, now seen corresponding path program 40 times [2021-06-05 05:16:36,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:36,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65478876] [2021-06-05 05:16:36,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:36,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:36,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65478876] [2021-06-05 05:16:36,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65478876] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:36,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:36,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:16:36,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823487897] [2021-06-05 05:16:36,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:16:36,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:36,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:16:36,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:16:36,863 INFO L87 Difference]: Start difference. First operand 8890 states and 26110 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:37,184 INFO L93 Difference]: Finished difference Result 14086 states and 41514 transitions. [2021-06-05 05:16:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:16:37,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:37,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:37,210 INFO L225 Difference]: With dead ends: 14086 [2021-06-05 05:16:37,211 INFO L226 Difference]: Without dead ends: 13386 [2021-06-05 05:16:37,211 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 66.2ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:16:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13386 states. [2021-06-05 05:16:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13386 to 8674. [2021-06-05 05:16:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 2.945462930935086) internal successors, (25546), 8673 states have internal predecessors, (25546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 25546 transitions. [2021-06-05 05:16:37,375 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 25546 transitions. Word has length 39 [2021-06-05 05:16:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:37,376 INFO L482 AbstractCegarLoop]: Abstraction has 8674 states and 25546 transitions. [2021-06-05 05:16:37,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 25546 transitions. [2021-06-05 05:16:37,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:37,386 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:37,386 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:16:37,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 05:16:37,386 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:37,386 INFO L82 PathProgramCache]: Analyzing trace with hash 64823676, now seen corresponding path program 41 times [2021-06-05 05:16:37,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:37,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100006769] [2021-06-05 05:16:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:37,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:37,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100006769] [2021-06-05 05:16:37,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100006769] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:37,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:37,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 05:16:37,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192018502] [2021-06-05 05:16:37,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 05:16:37,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:37,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 05:16:37,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:37,437 INFO L87 Difference]: Start difference. First operand 8674 states and 25546 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:37,786 INFO L93 Difference]: Finished difference Result 13828 states and 40806 transitions. [2021-06-05 05:16:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:16:37,787 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:37,805 INFO L225 Difference]: With dead ends: 13828 [2021-06-05 05:16:37,806 INFO L226 Difference]: Without dead ends: 13182 [2021-06-05 05:16:37,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:16:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2021-06-05 05:16:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 8470. [2021-06-05 05:16:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8469 states have (on average 2.964694769158106) internal successors, (25108), 8469 states have internal predecessors, (25108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 25108 transitions. [2021-06-05 05:16:37,939 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 25108 transitions. Word has length 39 [2021-06-05 05:16:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:37,939 INFO L482 AbstractCegarLoop]: Abstraction has 8470 states and 25108 transitions. [2021-06-05 05:16:37,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 25108 transitions. [2021-06-05 05:16:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:37,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:37,950 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] [2021-06-05 05:16:37,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 05:16:37,950 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:37,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:37,950 INFO L82 PathProgramCache]: Analyzing trace with hash -695140544, now seen corresponding path program 42 times [2021-06-05 05:16:37,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:37,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651292889] [2021-06-05 05:16:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:37,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:37,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651292889] [2021-06-05 05:16:37,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651292889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:37,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:37,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 05:16:37,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395171016] [2021-06-05 05:16:37,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 05:16:37,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:37,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 05:16:37,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:38,000 INFO L87 Difference]: Start difference. First operand 8470 states and 25108 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:38,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:38,360 INFO L93 Difference]: Finished difference Result 13371 states and 39611 transitions. [2021-06-05 05:16:38,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:16:38,361 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:38,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:38,379 INFO L225 Difference]: With dead ends: 13371 [2021-06-05 05:16:38,379 INFO L226 Difference]: Without dead ends: 12735 [2021-06-05 05:16:38,379 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:16:38,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2021-06-05 05:16:38,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 7590. [2021-06-05 05:16:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7590 states, 7589 states have (on average 2.960469100013177) internal successors, (22467), 7589 states have internal predecessors, (22467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 22467 transitions. [2021-06-05 05:16:38,499 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 22467 transitions. Word has length 39 [2021-06-05 05:16:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:38,499 INFO L482 AbstractCegarLoop]: Abstraction has 7590 states and 22467 transitions. [2021-06-05 05:16:38,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 22467 transitions. [2021-06-05 05:16:38,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:38,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:38,508 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] [2021-06-05 05:16:38,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 05:16:38,509 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:38,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:38,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1794340302, now seen corresponding path program 43 times [2021-06-05 05:16:38,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:38,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318290066] [2021-06-05 05:16:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:38,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:38,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318290066] [2021-06-05 05:16:38,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318290066] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:38,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:38,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 05:16:38,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857738460] [2021-06-05 05:16:38,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:16:38,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:38,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:16:38,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:16:38,551 INFO L87 Difference]: Start difference. First operand 7590 states and 22467 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:38,827 INFO L93 Difference]: Finished difference Result 12745 states and 37674 transitions. [2021-06-05 05:16:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:16:38,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:38,852 INFO L225 Difference]: With dead ends: 12745 [2021-06-05 05:16:38,852 INFO L226 Difference]: Without dead ends: 12601 [2021-06-05 05:16:38,853 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:16:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-06-05 05:16:38,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 7346. [2021-06-05 05:16:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 7345 states have (on average 2.9400953029271615) internal successors, (21595), 7345 states have internal predecessors, (21595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 21595 transitions. [2021-06-05 05:16:38,987 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 21595 transitions. Word has length 39 [2021-06-05 05:16:38,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:38,987 INFO L482 AbstractCegarLoop]: Abstraction has 7346 states and 21595 transitions. [2021-06-05 05:16:38,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:38,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 21595 transitions. [2021-06-05 05:16:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:38,997 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:38,997 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] [2021-06-05 05:16:38,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 05:16:38,997 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:38,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1613437490, now seen corresponding path program 44 times [2021-06-05 05:16:38,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:38,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851631771] [2021-06-05 05:16:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:39,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:39,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851631771] [2021-06-05 05:16:39,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851631771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:39,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:39,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:16:39,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673217820] [2021-06-05 05:16:39,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:16:39,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:39,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:16:39,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:16:39,047 INFO L87 Difference]: Start difference. First operand 7346 states and 21595 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:39,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:39,326 INFO L93 Difference]: Finished difference Result 11821 states and 34814 transitions. [2021-06-05 05:16:39,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:16:39,327 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:39,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:39,342 INFO L225 Difference]: With dead ends: 11821 [2021-06-05 05:16:39,342 INFO L226 Difference]: Without dead ends: 11629 [2021-06-05 05:16:39,343 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:16:39,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11629 states. [2021-06-05 05:16:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11629 to 7242. [2021-06-05 05:16:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 2.9428255765778206) internal successors, (21309), 7241 states have internal predecessors, (21309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 21309 transitions. [2021-06-05 05:16:39,456 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 21309 transitions. Word has length 39 [2021-06-05 05:16:39,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:39,456 INFO L482 AbstractCegarLoop]: Abstraction has 7242 states and 21309 transitions. [2021-06-05 05:16:39,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 21309 transitions. [2021-06-05 05:16:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:39,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:39,465 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] [2021-06-05 05:16:39,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 05:16:39,465 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash -798629012, now seen corresponding path program 45 times [2021-06-05 05:16:39,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:39,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126722898] [2021-06-05 05:16:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:39,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:39,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126722898] [2021-06-05 05:16:39,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126722898] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:39,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:39,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 05:16:39,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064125501] [2021-06-05 05:16:39,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 05:16:39,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:39,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 05:16:39,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:39,536 INFO L87 Difference]: Start difference. First operand 7242 states and 21309 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:39,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:39,888 INFO L93 Difference]: Finished difference Result 11315 states and 33296 transitions. [2021-06-05 05:16:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:16:39,888 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:39,903 INFO L225 Difference]: With dead ends: 11315 [2021-06-05 05:16:39,903 INFO L226 Difference]: Without dead ends: 11099 [2021-06-05 05:16:39,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 05:16:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-06-05 05:16:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 7008. [2021-06-05 05:16:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 2.97445411731126) internal successors, (20842), 7007 states have internal predecessors, (20842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 20842 transitions. [2021-06-05 05:16:40,014 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 20842 transitions. Word has length 39 [2021-06-05 05:16:40,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:40,014 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 20842 transitions. [2021-06-05 05:16:40,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 20842 transitions. [2021-06-05 05:16:40,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:40,024 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:40,024 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] [2021-06-05 05:16:40,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 05:16:40,024 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:40,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1518942532, now seen corresponding path program 46 times [2021-06-05 05:16:40,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:40,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706237589] [2021-06-05 05:16:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:40,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:40,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706237589] [2021-06-05 05:16:40,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706237589] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:40,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:40,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 05:16:40,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301967635] [2021-06-05 05:16:40,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 05:16:40,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:40,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 05:16:40,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:16:40,050 INFO L87 Difference]: Start difference. First operand 7008 states and 20842 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:40,152 INFO L93 Difference]: Finished difference Result 9444 states and 26929 transitions. [2021-06-05 05:16:40,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 05:16:40,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:40,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:40,164 INFO L225 Difference]: With dead ends: 9444 [2021-06-05 05:16:40,164 INFO L226 Difference]: Without dead ends: 8824 [2021-06-05 05:16:40,165 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:16:40,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2021-06-05 05:16:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 4125. [2021-06-05 05:16:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4124 states have (on average 2.908341416100873) internal successors, (11994), 4124 states have internal predecessors, (11994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 11994 transitions. [2021-06-05 05:16:40,246 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 11994 transitions. Word has length 39 [2021-06-05 05:16:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:40,246 INFO L482 AbstractCegarLoop]: Abstraction has 4125 states and 11994 transitions. [2021-06-05 05:16:40,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 11994 transitions. [2021-06-05 05:16:40,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:40,250 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:40,250 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] [2021-06-05 05:16:40,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 05:16:40,251 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:40,251 INFO L82 PathProgramCache]: Analyzing trace with hash -236999486, now seen corresponding path program 47 times [2021-06-05 05:16:40,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:40,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839151899] [2021-06-05 05:16:40,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:40,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:40,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839151899] [2021-06-05 05:16:40,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839151899] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:40,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:40,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:16:40,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860293200] [2021-06-05 05:16:40,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:16:40,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:40,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:16:40,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:16:40,288 INFO L87 Difference]: Start difference. First operand 4125 states and 11994 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:40,434 INFO L93 Difference]: Finished difference Result 6107 states and 16719 transitions. [2021-06-05 05:16:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:16:40,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:40,440 INFO L225 Difference]: With dead ends: 6107 [2021-06-05 05:16:40,440 INFO L226 Difference]: Without dead ends: 4693 [2021-06-05 05:16:40,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2021-06-05 05:16:40,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 2542. [2021-06-05 05:16:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2541 states have (on average 2.786698150334514) internal successors, (7081), 2541 states have internal predecessors, (7081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 7081 transitions. [2021-06-05 05:16:40,483 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 7081 transitions. Word has length 39 [2021-06-05 05:16:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:40,483 INFO L482 AbstractCegarLoop]: Abstraction has 2542 states and 7081 transitions. [2021-06-05 05:16:40,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 7081 transitions. [2021-06-05 05:16:40,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:40,486 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:40,486 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] [2021-06-05 05:16:40,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 05:16:40,486 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:40,486 INFO L82 PathProgramCache]: Analyzing trace with hash -634778652, now seen corresponding path program 48 times [2021-06-05 05:16:40,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:40,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788933555] [2021-06-05 05:16:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:40,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:40,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788933555] [2021-06-05 05:16:40,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788933555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:40,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:40,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:16:40,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127156524] [2021-06-05 05:16:40,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 05:16:40,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:40,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 05:16:40,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 05:16:40,532 INFO L87 Difference]: Start difference. First operand 2542 states and 7081 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:40,720 INFO L93 Difference]: Finished difference Result 1862 states and 4307 transitions. [2021-06-05 05:16:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:16:40,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:40,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:40,722 INFO L225 Difference]: With dead ends: 1862 [2021-06-05 05:16:40,722 INFO L226 Difference]: Without dead ends: 648 [2021-06-05 05:16:40,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:16:40,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-06-05 05:16:40,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 456. [2021-06-05 05:16:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.4329670329670328) internal successors, (1107), 455 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1107 transitions. [2021-06-05 05:16:40,728 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1107 transitions. Word has length 39 [2021-06-05 05:16:40,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:40,728 INFO L482 AbstractCegarLoop]: Abstraction has 456 states and 1107 transitions. [2021-06-05 05:16:40,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,728 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1107 transitions. [2021-06-05 05:16:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 05:16:40,728 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:16:40,729 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] [2021-06-05 05:16:40,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 05:16:40,729 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 05:16:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:16:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1819342244, now seen corresponding path program 49 times [2021-06-05 05:16:40,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:16:40,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605944782] [2021-06-05 05:16:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:16:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:16:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:16:40,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:16:40,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605944782] [2021-06-05 05:16:40,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605944782] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:16:40,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:16:40,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 05:16:40,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124485880] [2021-06-05 05:16:40,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 05:16:40,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:16:40,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 05:16:40,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:16:40,792 INFO L87 Difference]: Start difference. First operand 456 states and 1107 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:16:40,959 INFO L93 Difference]: Finished difference Result 391 states and 811 transitions. [2021-06-05 05:16:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:16:40,959 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 05:16:40,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:16:40,960 INFO L225 Difference]: With dead ends: 391 [2021-06-05 05:16:40,960 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 05:16:40,960 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 88.5ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:16:40,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 05:16:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 05:16:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 05:16:40,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-06-05 05:16:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:16:40,961 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 05:16:40,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:16:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 05:16:40,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 05:16:40,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 05:16:40,962 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 05:16:40,964 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 05:16:40 BasicIcfg [2021-06-05 05:16:40,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 05:16:40,965 INFO L168 Benchmark]: Toolchain (without parser) took 50147.17 ms. Allocated memory was 369.1 MB in the beginning and 14.8 GB in the end (delta: 14.4 GB). Free memory was 348.5 MB in the beginning and 9.3 GB in the end (delta: -9.0 GB). Peak memory consumption was 5.4 GB. Max. memory is 16.0 GB. [2021-06-05 05:16:40,965 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 369.1 MB. Free memory is still 349.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 05:16:40,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.59 ms. Allocated memory is still 369.1 MB. Free memory was 348.4 MB in the beginning and 346.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 05:16:40,965 INFO L168 Benchmark]: Boogie Preprocessor took 15.57 ms. Allocated memory is still 369.1 MB. Free memory was 346.8 MB in the beginning and 345.9 MB in the end (delta: 937.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 05:16:40,965 INFO L168 Benchmark]: RCFGBuilder took 312.38 ms. Allocated memory is still 369.1 MB. Free memory was 345.9 MB in the beginning and 330.9 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-05 05:16:40,966 INFO L168 Benchmark]: TraceAbstraction took 49792.56 ms. Allocated memory was 369.1 MB in the beginning and 14.8 GB in the end (delta: 14.4 GB). Free memory was 330.4 MB in the beginning and 9.3 GB in the end (delta: -9.0 GB). Peak memory consumption was 5.4 GB. Max. memory is 16.0 GB. [2021-06-05 05:16:40,966 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 0.15 ms. Allocated memory is still 369.1 MB. Free memory is still 349.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.59 ms. Allocated memory is still 369.1 MB. Free memory was 348.4 MB in the beginning and 346.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.57 ms. Allocated memory is still 369.1 MB. Free memory was 346.8 MB in the beginning and 345.9 MB in the end (delta: 937.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 312.38 ms. Allocated memory is still 369.1 MB. Free memory was 345.9 MB in the beginning and 330.9 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 49792.56 ms. Allocated memory was 369.1 MB in the beginning and 14.8 GB in the end (delta: 14.4 GB). Free memory was 330.4 MB in the beginning and 9.3 GB in the end (delta: -9.0 GB). Peak memory consumption was 5.4 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 49634.3ms, OverallIterations: 49, TraceHistogramMax: 1, EmptinessCheckTime: 1869.8ms, AutomataDifference: 19358.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1048.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3808 SDtfs, 5398 SDslu, 13350 SDs, 0 SdLazy, 14188 SolverSat, 2216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6278.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 608 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 2255.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28621occurred in iteration=13, InterpolantAutomatonStates: 480, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24233.8ms AutomataMinimizationTime, 49 MinimizatonAttempts, 461380 StatesRemovedByMinimization, 46 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 67.2ms SsaConstructionTime, 344.9ms SatisfiabilityAnalysisTime, 2186.1ms InterpolantComputationTime, 1911 NumberOfCodeBlocks, 1911 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 1862 ConstructedInterpolants, 0 QuantifiedInterpolants, 5436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 49 InterpolantComputations, 49 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...