/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 14:55:04,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 14:55:04,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 14:55:04,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 14:55:04,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 14:55:04,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 14:55:04,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 14:55:04,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 14:55:04,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 14:55:04,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 14:55:04,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 14:55:04,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 14:55:04,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 14:55:04,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 14:55:04,158 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 14:55:04,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 14:55:04,159 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 14:55:04,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 14:55:04,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 14:55:04,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 14:55:04,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 14:55:04,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 14:55:04,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 14:55:04,160 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 14:55:04,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 14:55:04,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 14:55:04,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 14:55:04,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 14:55:04,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 14:55:04,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 14:55:04,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 14:55:04,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 14:55:04,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 14:55:04,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 14:55:04,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 14:55:04,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 14:55:04,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 14:55:04,161 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 14:55:04,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 14:55:04,161 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 14:55:04,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 14:55:04,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 14:55:04,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 14:55:04,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 14:55:04,463 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 14:55:04,464 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 14:55:04,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-06-05 14:55:04,464 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-06-05 14:55:04,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 14:55:04,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 14:55:04,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 14:55:04,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 14:55:04,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 14:55:04,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/1) ... [2021-06-05 14:55:04,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/1) ... [2021-06-05 14:55:04,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 14:55:04,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 14:55:04,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 14:55:04,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 14:55:04,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/1) ... [2021-06-05 14:55:04,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/1) ... [2021-06-05 14:55:04,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/1) ... [2021-06-05 14:55:04,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/1) ... [2021-06-05 14:55:04,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/1) ... [2021-06-05 14:55:04,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/1) ... [2021-06-05 14:55:04,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/1) ... [2021-06-05 14:55:04,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 14:55:04,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 14:55:04,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 14:55:04,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 14:55:04,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 14:55:04,591 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 14:55:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 14:55:04,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 14:55:04,592 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 14:55:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 14:55:04,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 14:55:04,592 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 14:55:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 14:55:04,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 14:55:04,593 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 14:55:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 14:55:04,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 14:55:04,594 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 14:55:04,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 14:55:04,781 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 14:55:04,782 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:55:04 BoogieIcfgContainer [2021-06-05 14:55:04,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 14:55:04,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 14:55:04,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 14:55:04,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 14:55:04,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:55:04" (1/2) ... [2021-06-05 14:55:04,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cf7757 and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 02:55:04, skipping insertion in model container [2021-06-05 14:55:04,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:55:04" (2/2) ... [2021-06-05 14:55:04,787 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-06-05 14:55:04,803 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 14:55:04,803 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 14:55:04,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 14:55:04,804 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 14:55:04,833 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 14:55:04,849 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 14:55:04,879 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 14:55:04,879 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 14:55:04,879 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 14:55:04,879 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 14:55:04,879 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 14:55:04,879 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 14:55:04,879 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 14:55:04,879 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 14:55:04,887 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 41 transitions, 106 flow [2021-06-05 14:55:04,931 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:04,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:04,955 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] [2021-06-05 14:55:04,955 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:04,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:04,959 INFO L82 PathProgramCache]: Analyzing trace with hash 974063972, now seen corresponding path program 1 times [2021-06-05 14:55:04,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:04,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2707603] [2021-06-05 14:55:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:05,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:05,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2707603] [2021-06-05 14:55:05,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2707603] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:05,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:05,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:05,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830798028] [2021-06-05 14:55:05,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:05,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:05,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:05,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:05,136 INFO L87 Difference]: Start difference. First operand has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 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 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:05,292 INFO L93 Difference]: Finished difference Result 998 states and 2445 transitions. [2021-06-05 14:55:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 14:55:05,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:05,305 INFO L225 Difference]: With dead ends: 998 [2021-06-05 14:55:05,305 INFO L226 Difference]: Without dead ends: 923 [2021-06-05 14:55:05,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 88.6ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:55:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-06-05 14:55:05,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 687. [2021-06-05 14:55:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.564139941690962) internal successors, (1759), 686 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1759 transitions. [2021-06-05 14:55:05,360 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1759 transitions. Word has length 36 [2021-06-05 14:55:05,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:05,360 INFO L482 AbstractCegarLoop]: Abstraction has 687 states and 1759 transitions. [2021-06-05 14:55:05,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,361 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1759 transitions. [2021-06-05 14:55:05,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:05,362 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:05,362 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] [2021-06-05 14:55:05,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 14:55:05,363 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:05,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1374757314, now seen corresponding path program 2 times [2021-06-05 14:55:05,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:05,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883600534] [2021-06-05 14:55:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:05,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:05,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883600534] [2021-06-05 14:55:05,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883600534] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:05,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:05,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:55:05,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781458210] [2021-06-05 14:55:05,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:05,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:05,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:05,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:05,441 INFO L87 Difference]: Start difference. First operand 687 states and 1759 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:05,534 INFO L93 Difference]: Finished difference Result 1384 states and 3517 transitions. [2021-06-05 14:55:05,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:55:05,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:05,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:05,539 INFO L225 Difference]: With dead ends: 1384 [2021-06-05 14:55:05,539 INFO L226 Difference]: Without dead ends: 1324 [2021-06-05 14:55:05,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-06-05 14:55:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-06-05 14:55:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 755. [2021-06-05 14:55:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 2.5450928381962865) internal successors, (1919), 754 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1919 transitions. [2021-06-05 14:55:05,569 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1919 transitions. Word has length 36 [2021-06-05 14:55:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:05,570 INFO L482 AbstractCegarLoop]: Abstraction has 755 states and 1919 transitions. [2021-06-05 14:55:05,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1919 transitions. [2021-06-05 14:55:05,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:05,572 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:05,572 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] [2021-06-05 14:55:05,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 14:55:05,573 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:05,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1141840352, now seen corresponding path program 3 times [2021-06-05 14:55:05,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:05,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192209240] [2021-06-05 14:55:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:05,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:05,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192209240] [2021-06-05 14:55:05,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192209240] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:05,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:05,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:55:05,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116824955] [2021-06-05 14:55:05,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:55:05,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:05,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:55:05,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:55:05,608 INFO L87 Difference]: Start difference. First operand 755 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:05,614 INFO L93 Difference]: Finished difference Result 711 states and 1782 transitions. [2021-06-05 14:55:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:55:05,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:05,616 INFO L225 Difference]: With dead ends: 711 [2021-06-05 14:55:05,616 INFO L226 Difference]: Without dead ends: 711 [2021-06-05 14:55:05,617 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:55:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-06-05 14:55:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2021-06-05 14:55:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 2.5098591549295777) internal successors, (1782), 710 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1782 transitions. [2021-06-05 14:55:05,629 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1782 transitions. Word has length 36 [2021-06-05 14:55:05,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:05,629 INFO L482 AbstractCegarLoop]: Abstraction has 711 states and 1782 transitions. [2021-06-05 14:55:05,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1782 transitions. [2021-06-05 14:55:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:05,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:05,631 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] [2021-06-05 14:55:05,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 14:55:05,631 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:05,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:05,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1806691788, now seen corresponding path program 4 times [2021-06-05 14:55:05,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:05,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001014596] [2021-06-05 14:55:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:05,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:05,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001014596] [2021-06-05 14:55:05,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001014596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:05,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:05,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:05,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388151048] [2021-06-05 14:55:05,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:05,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:05,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:05,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:05,672 INFO L87 Difference]: Start difference. First operand 711 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:05,790 INFO L93 Difference]: Finished difference Result 1037 states and 2486 transitions. [2021-06-05 14:55:05,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 14:55:05,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:05,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:05,794 INFO L225 Difference]: With dead ends: 1037 [2021-06-05 14:55:05,794 INFO L226 Difference]: Without dead ends: 946 [2021-06-05 14:55:05,795 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:55:05,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-06-05 14:55:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 725. [2021-06-05 14:55:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 2.4903314917127073) internal successors, (1803), 724 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1803 transitions. [2021-06-05 14:55:05,814 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1803 transitions. Word has length 36 [2021-06-05 14:55:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:05,815 INFO L482 AbstractCegarLoop]: Abstraction has 725 states and 1803 transitions. [2021-06-05 14:55:05,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1803 transitions. [2021-06-05 14:55:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:05,817 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:05,817 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] [2021-06-05 14:55:05,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 14:55:05,817 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:05,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1002048854, now seen corresponding path program 5 times [2021-06-05 14:55:05,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:05,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943372200] [2021-06-05 14:55:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:05,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:05,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943372200] [2021-06-05 14:55:05,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943372200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:05,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:05,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:55:05,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34855210] [2021-06-05 14:55:05,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:55:05,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:05,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:55:05,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:55:05,925 INFO L87 Difference]: Start difference. First operand 725 states and 1803 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:06,055 INFO L93 Difference]: Finished difference Result 1727 states and 4287 transitions. [2021-06-05 14:55:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 14:55:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:06,061 INFO L225 Difference]: With dead ends: 1727 [2021-06-05 14:55:06,061 INFO L226 Difference]: Without dead ends: 1715 [2021-06-05 14:55:06,061 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:55:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2021-06-05 14:55:06,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 819. [2021-06-05 14:55:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.488997555012225) internal successors, (2036), 818 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2036 transitions. [2021-06-05 14:55:06,083 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2036 transitions. Word has length 36 [2021-06-05 14:55:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:06,083 INFO L482 AbstractCegarLoop]: Abstraction has 819 states and 2036 transitions. [2021-06-05 14:55:06,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2036 transitions. [2021-06-05 14:55:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:06,085 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:06,085 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] [2021-06-05 14:55:06,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 14:55:06,085 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash -2018104662, now seen corresponding path program 6 times [2021-06-05 14:55:06,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:06,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731507720] [2021-06-05 14:55:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:06,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:06,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731507720] [2021-06-05 14:55:06,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731507720] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:06,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:06,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:55:06,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279231423] [2021-06-05 14:55:06,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:55:06,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:06,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:55:06,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:55:06,167 INFO L87 Difference]: Start difference. First operand 819 states and 2036 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:06,291 INFO L93 Difference]: Finished difference Result 1666 states and 4109 transitions. [2021-06-05 14:55:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 14:55:06,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:06,296 INFO L225 Difference]: With dead ends: 1666 [2021-06-05 14:55:06,296 INFO L226 Difference]: Without dead ends: 1638 [2021-06-05 14:55:06,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:55:06,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-06-05 14:55:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 799. [2021-06-05 14:55:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 2.4862155388471177) internal successors, (1984), 798 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1984 transitions. [2021-06-05 14:55:06,313 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1984 transitions. Word has length 36 [2021-06-05 14:55:06,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:06,313 INFO L482 AbstractCegarLoop]: Abstraction has 799 states and 1984 transitions. [2021-06-05 14:55:06,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,313 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1984 transitions. [2021-06-05 14:55:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:06,314 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:06,315 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] [2021-06-05 14:55:06,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 14:55:06,315 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash 888977548, now seen corresponding path program 7 times [2021-06-05 14:55:06,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:06,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311769741] [2021-06-05 14:55:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:06,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:06,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311769741] [2021-06-05 14:55:06,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311769741] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:06,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:06,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:55:06,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182349679] [2021-06-05 14:55:06,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:55:06,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:06,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:55:06,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:55:06,386 INFO L87 Difference]: Start difference. First operand 799 states and 1984 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:06,487 INFO L93 Difference]: Finished difference Result 1712 states and 4234 transitions. [2021-06-05 14:55:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 14:55:06,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:06,492 INFO L225 Difference]: With dead ends: 1712 [2021-06-05 14:55:06,492 INFO L226 Difference]: Without dead ends: 1700 [2021-06-05 14:55:06,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:55:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2021-06-05 14:55:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 854. [2021-06-05 14:55:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.4935521688159437) internal successors, (2127), 853 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2127 transitions. [2021-06-05 14:55:06,510 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2127 transitions. Word has length 36 [2021-06-05 14:55:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:06,510 INFO L482 AbstractCegarLoop]: Abstraction has 854 states and 2127 transitions. [2021-06-05 14:55:06,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2127 transitions. [2021-06-05 14:55:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:06,511 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:06,511 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] [2021-06-05 14:55:06,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 14:55:06,512 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:06,512 INFO L82 PathProgramCache]: Analyzing trace with hash -127078260, now seen corresponding path program 8 times [2021-06-05 14:55:06,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:06,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951807846] [2021-06-05 14:55:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:06,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:06,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951807846] [2021-06-05 14:55:06,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951807846] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:06,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:06,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:55:06,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19154261] [2021-06-05 14:55:06,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:55:06,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:06,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:55:06,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:55:06,569 INFO L87 Difference]: Start difference. First operand 854 states and 2127 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:06,672 INFO L93 Difference]: Finished difference Result 1651 states and 4056 transitions. [2021-06-05 14:55:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 14:55:06,673 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:06,677 INFO L225 Difference]: With dead ends: 1651 [2021-06-05 14:55:06,677 INFO L226 Difference]: Without dead ends: 1627 [2021-06-05 14:55:06,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:55:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-06-05 14:55:06,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 814. [2021-06-05 14:55:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 2.4846248462484626) internal successors, (2020), 813 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 2020 transitions. [2021-06-05 14:55:06,698 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 2020 transitions. Word has length 36 [2021-06-05 14:55:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:06,698 INFO L482 AbstractCegarLoop]: Abstraction has 814 states and 2020 transitions. [2021-06-05 14:55:06,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 2020 transitions. [2021-06-05 14:55:06,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:06,699 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:06,699 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] [2021-06-05 14:55:06,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 14:55:06,700 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:06,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:06,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1614595956, now seen corresponding path program 9 times [2021-06-05 14:55:06,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:06,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841947013] [2021-06-05 14:55:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:06,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:06,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841947013] [2021-06-05 14:55:06,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841947013] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:06,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:06,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:55:06,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645838914] [2021-06-05 14:55:06,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:55:06,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:06,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:55:06,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:55:06,727 INFO L87 Difference]: Start difference. First operand 814 states and 2020 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:06,732 INFO L93 Difference]: Finished difference Result 790 states and 1933 transitions. [2021-06-05 14:55:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:55:06,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:06,734 INFO L225 Difference]: With dead ends: 790 [2021-06-05 14:55:06,734 INFO L226 Difference]: Without dead ends: 780 [2021-06-05 14:55:06,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:55:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-06-05 14:55:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2021-06-05 14:55:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.453145057766367) internal successors, (1911), 779 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1911 transitions. [2021-06-05 14:55:06,750 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1911 transitions. Word has length 36 [2021-06-05 14:55:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:06,750 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 1911 transitions. [2021-06-05 14:55:06,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1911 transitions. [2021-06-05 14:55:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:06,751 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:06,752 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] [2021-06-05 14:55:06,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 14:55:06,753 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:06,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:06,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1296551418, now seen corresponding path program 10 times [2021-06-05 14:55:06,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:06,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461598637] [2021-06-05 14:55:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:06,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:06,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461598637] [2021-06-05 14:55:06,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461598637] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:06,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:06,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:06,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845261881] [2021-06-05 14:55:06,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:06,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:06,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:06,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:06,812 INFO L87 Difference]: Start difference. First operand 780 states and 1911 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:07,049 INFO L93 Difference]: Finished difference Result 1251 states and 2962 transitions. [2021-06-05 14:55:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 14:55:07,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:07,053 INFO L225 Difference]: With dead ends: 1251 [2021-06-05 14:55:07,053 INFO L226 Difference]: Without dead ends: 1065 [2021-06-05 14:55:07,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:55:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-06-05 14:55:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 851. [2021-06-05 14:55:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 2.408235294117647) internal successors, (2047), 850 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2047 transitions. [2021-06-05 14:55:07,068 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 2047 transitions. Word has length 36 [2021-06-05 14:55:07,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:07,068 INFO L482 AbstractCegarLoop]: Abstraction has 851 states and 2047 transitions. [2021-06-05 14:55:07,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 2047 transitions. [2021-06-05 14:55:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:07,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:07,069 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] [2021-06-05 14:55:07,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 14:55:07,069 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:07,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:07,070 INFO L82 PathProgramCache]: Analyzing trace with hash 846284964, now seen corresponding path program 11 times [2021-06-05 14:55:07,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:07,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774906143] [2021-06-05 14:55:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:07,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:07,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774906143] [2021-06-05 14:55:07,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774906143] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:07,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:07,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:07,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235127615] [2021-06-05 14:55:07,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:07,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:07,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:07,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:07,108 INFO L87 Difference]: Start difference. First operand 851 states and 2047 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:07,228 INFO L93 Difference]: Finished difference Result 1179 states and 2770 transitions. [2021-06-05 14:55:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 14:55:07,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:07,232 INFO L225 Difference]: With dead ends: 1179 [2021-06-05 14:55:07,232 INFO L226 Difference]: Without dead ends: 1051 [2021-06-05 14:55:07,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:55:07,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-06-05 14:55:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 845. [2021-06-05 14:55:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.4004739336492893) internal successors, (2026), 844 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2026 transitions. [2021-06-05 14:55:07,247 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2026 transitions. Word has length 36 [2021-06-05 14:55:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:07,247 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2026 transitions. [2021-06-05 14:55:07,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,247 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2026 transitions. [2021-06-05 14:55:07,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:07,248 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:07,248 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] [2021-06-05 14:55:07,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 14:55:07,248 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:07,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:07,249 INFO L82 PathProgramCache]: Analyzing trace with hash -911699450, now seen corresponding path program 12 times [2021-06-05 14:55:07,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:07,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296055463] [2021-06-05 14:55:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:07,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:07,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296055463] [2021-06-05 14:55:07,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296055463] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:07,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:07,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:07,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289931036] [2021-06-05 14:55:07,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:07,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:07,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:07,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:07,278 INFO L87 Difference]: Start difference. First operand 845 states and 2026 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:07,365 INFO L93 Difference]: Finished difference Result 1124 states and 2638 transitions. [2021-06-05 14:55:07,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 14:55:07,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:07,369 INFO L225 Difference]: With dead ends: 1124 [2021-06-05 14:55:07,369 INFO L226 Difference]: Without dead ends: 934 [2021-06-05 14:55:07,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:55:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-06-05 14:55:07,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 760. [2021-06-05 14:55:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 2.399209486166008) internal successors, (1821), 759 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1821 transitions. [2021-06-05 14:55:07,382 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1821 transitions. Word has length 36 [2021-06-05 14:55:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:07,382 INFO L482 AbstractCegarLoop]: Abstraction has 760 states and 1821 transitions. [2021-06-05 14:55:07,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,382 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1821 transitions. [2021-06-05 14:55:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:07,383 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:07,383 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] [2021-06-05 14:55:07,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 14:55:07,383 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:07,384 INFO L82 PathProgramCache]: Analyzing trace with hash -886716842, now seen corresponding path program 13 times [2021-06-05 14:55:07,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:07,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122655767] [2021-06-05 14:55:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:07,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:07,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122655767] [2021-06-05 14:55:07,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122655767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:07,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:07,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:07,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616798671] [2021-06-05 14:55:07,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:07,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:07,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:07,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:07,419 INFO L87 Difference]: Start difference. First operand 760 states and 1821 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:07,533 INFO L93 Difference]: Finished difference Result 1116 states and 2583 transitions. [2021-06-05 14:55:07,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 14:55:07,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:07,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:07,536 INFO L225 Difference]: With dead ends: 1116 [2021-06-05 14:55:07,536 INFO L226 Difference]: Without dead ends: 1017 [2021-06-05 14:55:07,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:55:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-06-05 14:55:07,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 769. [2021-06-05 14:55:07,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 2.40234375) internal successors, (1845), 768 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1845 transitions. [2021-06-05 14:55:07,552 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1845 transitions. Word has length 36 [2021-06-05 14:55:07,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:07,552 INFO L482 AbstractCegarLoop]: Abstraction has 769 states and 1845 transitions. [2021-06-05 14:55:07,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,552 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1845 transitions. [2021-06-05 14:55:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:07,553 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:07,553 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] [2021-06-05 14:55:07,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 14:55:07,554 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:07,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1290670540, now seen corresponding path program 14 times [2021-06-05 14:55:07,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:07,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080029931] [2021-06-05 14:55:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:07,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:07,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080029931] [2021-06-05 14:55:07,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080029931] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:07,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:07,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:07,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782975518] [2021-06-05 14:55:07,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:07,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:07,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:07,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:07,599 INFO L87 Difference]: Start difference. First operand 769 states and 1845 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:07,716 INFO L93 Difference]: Finished difference Result 1108 states and 2570 transitions. [2021-06-05 14:55:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 14:55:07,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:07,719 INFO L225 Difference]: With dead ends: 1108 [2021-06-05 14:55:07,719 INFO L226 Difference]: Without dead ends: 994 [2021-06-05 14:55:07,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 65.0ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:55:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-06-05 14:55:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 826. [2021-06-05 14:55:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.353939393939394) internal successors, (1942), 825 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1942 transitions. [2021-06-05 14:55:07,733 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1942 transitions. Word has length 36 [2021-06-05 14:55:07,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:07,734 INFO L482 AbstractCegarLoop]: Abstraction has 826 states and 1942 transitions. [2021-06-05 14:55:07,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,734 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1942 transitions. [2021-06-05 14:55:07,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:07,735 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:07,735 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] [2021-06-05 14:55:07,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 14:55:07,735 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:07,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:07,736 INFO L82 PathProgramCache]: Analyzing trace with hash 43920790, now seen corresponding path program 15 times [2021-06-05 14:55:07,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:07,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945190560] [2021-06-05 14:55:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:07,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:07,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945190560] [2021-06-05 14:55:07,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945190560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:07,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:07,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:07,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554835461] [2021-06-05 14:55:07,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:07,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:07,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:07,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:07,769 INFO L87 Difference]: Start difference. First operand 826 states and 1942 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:07,855 INFO L93 Difference]: Finished difference Result 1089 states and 2514 transitions. [2021-06-05 14:55:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 14:55:07,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:07,859 INFO L225 Difference]: With dead ends: 1089 [2021-06-05 14:55:07,859 INFO L226 Difference]: Without dead ends: 918 [2021-06-05 14:55:07,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:55:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-06-05 14:55:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 751. [2021-06-05 14:55:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 2.3613333333333335) internal successors, (1771), 750 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1771 transitions. [2021-06-05 14:55:07,874 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1771 transitions. Word has length 36 [2021-06-05 14:55:07,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:07,874 INFO L482 AbstractCegarLoop]: Abstraction has 751 states and 1771 transitions. [2021-06-05 14:55:07,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,874 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1771 transitions. [2021-06-05 14:55:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:07,875 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:07,875 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] [2021-06-05 14:55:07,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 14:55:07,876 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:07,876 INFO L82 PathProgramCache]: Analyzing trace with hash 658153170, now seen corresponding path program 16 times [2021-06-05 14:55:07,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:07,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107712743] [2021-06-05 14:55:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:07,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:07,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107712743] [2021-06-05 14:55:07,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107712743] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:07,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:07,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:55:07,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651620245] [2021-06-05 14:55:07,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:55:07,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:07,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:55:07,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:55:07,910 INFO L87 Difference]: Start difference. First operand 751 states and 1771 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:08,038 INFO L93 Difference]: Finished difference Result 984 states and 2257 transitions. [2021-06-05 14:55:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 14:55:08,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:08,041 INFO L225 Difference]: With dead ends: 984 [2021-06-05 14:55:08,041 INFO L226 Difference]: Without dead ends: 893 [2021-06-05 14:55:08,041 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:55:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-06-05 14:55:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 687. [2021-06-05 14:55:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.3658892128279883) internal successors, (1623), 686 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1623 transitions. [2021-06-05 14:55:08,051 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1623 transitions. Word has length 36 [2021-06-05 14:55:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:08,051 INFO L482 AbstractCegarLoop]: Abstraction has 687 states and 1623 transitions. [2021-06-05 14:55:08,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1623 transitions. [2021-06-05 14:55:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:08,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:08,052 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] [2021-06-05 14:55:08,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 14:55:08,053 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:08,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1493977744, now seen corresponding path program 17 times [2021-06-05 14:55:08,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:08,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298381754] [2021-06-05 14:55:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:08,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:08,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298381754] [2021-06-05 14:55:08,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298381754] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:08,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:08,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:08,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144066289] [2021-06-05 14:55:08,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:08,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:08,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:08,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:08,077 INFO L87 Difference]: Start difference. First operand 687 states and 1623 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:08,209 INFO L93 Difference]: Finished difference Result 1072 states and 2458 transitions. [2021-06-05 14:55:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 14:55:08,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:08,211 INFO L225 Difference]: With dead ends: 1072 [2021-06-05 14:55:08,211 INFO L226 Difference]: Without dead ends: 1004 [2021-06-05 14:55:08,212 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-06-05 14:55:08,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 747. [2021-06-05 14:55:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 2.312332439678284) internal successors, (1725), 746 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1725 transitions. [2021-06-05 14:55:08,224 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1725 transitions. Word has length 36 [2021-06-05 14:55:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:08,224 INFO L482 AbstractCegarLoop]: Abstraction has 747 states and 1725 transitions. [2021-06-05 14:55:08,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,224 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1725 transitions. [2021-06-05 14:55:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:08,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:08,225 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] [2021-06-05 14:55:08,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 14:55:08,225 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:08,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:08,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1043005138, now seen corresponding path program 18 times [2021-06-05 14:55:08,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:08,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69054839] [2021-06-05 14:55:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:08,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:08,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69054839] [2021-06-05 14:55:08,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69054839] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:08,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:08,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:08,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55587133] [2021-06-05 14:55:08,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:08,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:08,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:08,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:08,254 INFO L87 Difference]: Start difference. First operand 747 states and 1725 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:08,379 INFO L93 Difference]: Finished difference Result 941 states and 2169 transitions. [2021-06-05 14:55:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 14:55:08,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:08,381 INFO L225 Difference]: With dead ends: 941 [2021-06-05 14:55:08,381 INFO L226 Difference]: Without dead ends: 787 [2021-06-05 14:55:08,381 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 61.6ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:55:08,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-06-05 14:55:08,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 685. [2021-06-05 14:55:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 2.3084795321637426) internal successors, (1579), 684 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1579 transitions. [2021-06-05 14:55:08,391 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1579 transitions. Word has length 36 [2021-06-05 14:55:08,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:08,391 INFO L482 AbstractCegarLoop]: Abstraction has 685 states and 1579 transitions. [2021-06-05 14:55:08,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1579 transitions. [2021-06-05 14:55:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:08,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:08,392 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] [2021-06-05 14:55:08,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 14:55:08,392 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:08,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1975445742, now seen corresponding path program 19 times [2021-06-05 14:55:08,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:08,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830315933] [2021-06-05 14:55:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:08,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:08,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830315933] [2021-06-05 14:55:08,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830315933] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:08,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:08,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:08,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581355489] [2021-06-05 14:55:08,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:08,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:08,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:08,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:08,422 INFO L87 Difference]: Start difference. First operand 685 states and 1579 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:08,540 INFO L93 Difference]: Finished difference Result 855 states and 1962 transitions. [2021-06-05 14:55:08,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 14:55:08,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:08,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:08,542 INFO L225 Difference]: With dead ends: 855 [2021-06-05 14:55:08,542 INFO L226 Difference]: Without dead ends: 722 [2021-06-05 14:55:08,542 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 64.4ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:55:08,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-06-05 14:55:08,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 625. [2021-06-05 14:55:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.315705128205128) internal successors, (1445), 624 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1445 transitions. [2021-06-05 14:55:08,551 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1445 transitions. Word has length 36 [2021-06-05 14:55:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:08,551 INFO L482 AbstractCegarLoop]: Abstraction has 625 states and 1445 transitions. [2021-06-05 14:55:08,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1445 transitions. [2021-06-05 14:55:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:08,552 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:08,552 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] [2021-06-05 14:55:08,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 14:55:08,552 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:08,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:08,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1605414732, now seen corresponding path program 20 times [2021-06-05 14:55:08,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:08,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039498694] [2021-06-05 14:55:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:08,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:08,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039498694] [2021-06-05 14:55:08,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039498694] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:08,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:08,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:55:08,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023089299] [2021-06-05 14:55:08,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:55:08,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:08,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:55:08,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:55:08,582 INFO L87 Difference]: Start difference. First operand 625 states and 1445 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:08,708 INFO L93 Difference]: Finished difference Result 810 states and 1861 transitions. [2021-06-05 14:55:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 14:55:08,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:08,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:08,709 INFO L225 Difference]: With dead ends: 810 [2021-06-05 14:55:08,709 INFO L226 Difference]: Without dead ends: 761 [2021-06-05 14:55:08,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:55:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-06-05 14:55:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 631. [2021-06-05 14:55:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 2.3142857142857145) internal successors, (1458), 630 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1458 transitions. [2021-06-05 14:55:08,729 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1458 transitions. Word has length 36 [2021-06-05 14:55:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:08,730 INFO L482 AbstractCegarLoop]: Abstraction has 631 states and 1458 transitions. [2021-06-05 14:55:08,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1458 transitions. [2021-06-05 14:55:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:08,731 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:08,731 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] [2021-06-05 14:55:08,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 14:55:08,731 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:08,731 INFO L82 PathProgramCache]: Analyzing trace with hash 578791080, now seen corresponding path program 21 times [2021-06-05 14:55:08,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:08,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489685546] [2021-06-05 14:55:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:08,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:08,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489685546] [2021-06-05 14:55:08,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489685546] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:08,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:08,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:08,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37925563] [2021-06-05 14:55:08,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:08,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:08,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:08,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:08,759 INFO L87 Difference]: Start difference. First operand 631 states and 1458 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:08,815 INFO L93 Difference]: Finished difference Result 760 states and 1753 transitions. [2021-06-05 14:55:08,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:55:08,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:08,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:08,816 INFO L225 Difference]: With dead ends: 760 [2021-06-05 14:55:08,817 INFO L226 Difference]: Without dead ends: 588 [2021-06-05 14:55:08,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:55:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-06-05 14:55:08,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 521. [2021-06-05 14:55:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.3134615384615387) internal successors, (1203), 520 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1203 transitions. [2021-06-05 14:55:08,824 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1203 transitions. Word has length 36 [2021-06-05 14:55:08,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:08,824 INFO L482 AbstractCegarLoop]: Abstraction has 521 states and 1203 transitions. [2021-06-05 14:55:08,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,824 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1203 transitions. [2021-06-05 14:55:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:08,825 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:08,825 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] [2021-06-05 14:55:08,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 14:55:08,825 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1889566906, now seen corresponding path program 22 times [2021-06-05 14:55:08,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:08,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386067374] [2021-06-05 14:55:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:08,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:08,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386067374] [2021-06-05 14:55:08,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386067374] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:08,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:08,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:55:08,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152394143] [2021-06-05 14:55:08,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:55:08,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:08,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:55:08,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:55:08,853 INFO L87 Difference]: Start difference. First operand 521 states and 1203 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:08,983 INFO L93 Difference]: Finished difference Result 699 states and 1564 transitions. [2021-06-05 14:55:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 14:55:08,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:08,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:08,984 INFO L225 Difference]: With dead ends: 699 [2021-06-05 14:55:08,985 INFO L226 Difference]: Without dead ends: 598 [2021-06-05 14:55:08,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:55:08,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-06-05 14:55:08,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 434. [2021-06-05 14:55:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.325635103926097) internal successors, (1007), 433 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1007 transitions. [2021-06-05 14:55:08,991 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1007 transitions. Word has length 36 [2021-06-05 14:55:08,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:08,991 INFO L482 AbstractCegarLoop]: Abstraction has 434 states and 1007 transitions. [2021-06-05 14:55:08,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1007 transitions. [2021-06-05 14:55:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:08,992 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:08,992 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] [2021-06-05 14:55:08,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 14:55:08,992 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:08,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:08,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1799608796, now seen corresponding path program 23 times [2021-06-05 14:55:08,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:08,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16005210] [2021-06-05 14:55:08,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:09,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:09,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16005210] [2021-06-05 14:55:09,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16005210] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:09,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:09,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:55:09,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065622523] [2021-06-05 14:55:09,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:55:09,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:09,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:55:09,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:55:09,027 INFO L87 Difference]: Start difference. First operand 434 states and 1007 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:09,158 INFO L93 Difference]: Finished difference Result 598 states and 1372 transitions. [2021-06-05 14:55:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 14:55:09,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:09,159 INFO L225 Difference]: With dead ends: 598 [2021-06-05 14:55:09,159 INFO L226 Difference]: Without dead ends: 546 [2021-06-05 14:55:09,160 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 65.9ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:55:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-06-05 14:55:09,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 441. [2021-06-05 14:55:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 2.3227272727272728) internal successors, (1022), 440 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1022 transitions. [2021-06-05 14:55:09,176 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1022 transitions. Word has length 36 [2021-06-05 14:55:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:09,176 INFO L482 AbstractCegarLoop]: Abstraction has 441 states and 1022 transitions. [2021-06-05 14:55:09,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1022 transitions. [2021-06-05 14:55:09,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:09,177 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:09,177 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] [2021-06-05 14:55:09,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 14:55:09,177 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:09,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:09,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1002873044, now seen corresponding path program 24 times [2021-06-05 14:55:09,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:09,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60276259] [2021-06-05 14:55:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:09,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:09,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60276259] [2021-06-05 14:55:09,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60276259] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:09,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:09,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:55:09,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436941760] [2021-06-05 14:55:09,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:09,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:09,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:09,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:09,206 INFO L87 Difference]: Start difference. First operand 441 states and 1022 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:09,257 INFO L93 Difference]: Finished difference Result 542 states and 1249 transitions. [2021-06-05 14:55:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:55:09,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:09,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:09,258 INFO L225 Difference]: With dead ends: 542 [2021-06-05 14:55:09,258 INFO L226 Difference]: Without dead ends: 381 [2021-06-05 14:55:09,258 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:55:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-06-05 14:55:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 342. [2021-06-05 14:55:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.346041055718475) internal successors, (800), 341 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 800 transitions. [2021-06-05 14:55:09,263 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 800 transitions. Word has length 36 [2021-06-05 14:55:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:09,263 INFO L482 AbstractCegarLoop]: Abstraction has 342 states and 800 transitions. [2021-06-05 14:55:09,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 800 transitions. [2021-06-05 14:55:09,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:09,264 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:09,264 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] [2021-06-05 14:55:09,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 14:55:09,264 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:09,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:09,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1626416734, now seen corresponding path program 25 times [2021-06-05 14:55:09,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:09,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759379379] [2021-06-05 14:55:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:09,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:09,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759379379] [2021-06-05 14:55:09,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759379379] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:09,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:09,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:55:09,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843370236] [2021-06-05 14:55:09,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:55:09,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:09,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:55:09,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:55:09,327 INFO L87 Difference]: Start difference. First operand 342 states and 800 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:09,414 INFO L93 Difference]: Finished difference Result 452 states and 1058 transitions. [2021-06-05 14:55:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:55:09,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:09,415 INFO L225 Difference]: With dead ends: 452 [2021-06-05 14:55:09,415 INFO L226 Difference]: Without dead ends: 432 [2021-06-05 14:55:09,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:55:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-06-05 14:55:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 377. [2021-06-05 14:55:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3351063829787235) internal successors, (878), 376 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 878 transitions. [2021-06-05 14:55:09,420 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 878 transitions. Word has length 36 [2021-06-05 14:55:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:09,420 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 878 transitions. [2021-06-05 14:55:09,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 878 transitions. [2021-06-05 14:55:09,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:09,421 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:09,421 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] [2021-06-05 14:55:09,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 14:55:09,421 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:09,421 INFO L82 PathProgramCache]: Analyzing trace with hash 610360926, now seen corresponding path program 26 times [2021-06-05 14:55:09,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:09,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230101074] [2021-06-05 14:55:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:09,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:09,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230101074] [2021-06-05 14:55:09,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230101074] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:09,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:09,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:55:09,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281681867] [2021-06-05 14:55:09,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:55:09,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:09,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:55:09,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:55:09,472 INFO L87 Difference]: Start difference. First operand 377 states and 878 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:09,538 INFO L93 Difference]: Finished difference Result 397 states and 914 transitions. [2021-06-05 14:55:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:55:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:09,538 INFO L225 Difference]: With dead ends: 397 [2021-06-05 14:55:09,538 INFO L226 Difference]: Without dead ends: 332 [2021-06-05 14:55:09,539 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:55:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-06-05 14:55:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-06-05 14:55:09,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.3323262839879155) internal successors, (772), 331 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 772 transitions. [2021-06-05 14:55:09,543 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 772 transitions. Word has length 36 [2021-06-05 14:55:09,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:09,543 INFO L482 AbstractCegarLoop]: Abstraction has 332 states and 772 transitions. [2021-06-05 14:55:09,543 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,543 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 772 transitions. [2021-06-05 14:55:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:09,543 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:09,544 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] [2021-06-05 14:55:09,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 14:55:09,544 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:09,544 INFO L82 PathProgramCache]: Analyzing trace with hash -777524160, now seen corresponding path program 27 times [2021-06-05 14:55:09,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:09,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721024690] [2021-06-05 14:55:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:09,592 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 14:55:09,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:09,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721024690] [2021-06-05 14:55:09,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721024690] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:09,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:09,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:55:09,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656265896] [2021-06-05 14:55:09,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:55:09,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:09,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:55:09,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:55:09,593 INFO L87 Difference]: Start difference. First operand 332 states and 772 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:09,665 INFO L93 Difference]: Finished difference Result 472 states and 1099 transitions. [2021-06-05 14:55:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:55:09,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:09,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:09,667 INFO L225 Difference]: With dead ends: 472 [2021-06-05 14:55:09,667 INFO L226 Difference]: Without dead ends: 452 [2021-06-05 14:55:09,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:55:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-06-05 14:55:09,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 377. [2021-06-05 14:55:09,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3218085106382977) internal successors, (873), 376 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 873 transitions. [2021-06-05 14:55:09,672 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 873 transitions. Word has length 36 [2021-06-05 14:55:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:09,672 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 873 transitions. [2021-06-05 14:55:09,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 873 transitions. [2021-06-05 14:55:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:09,672 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:09,672 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] [2021-06-05 14:55:09,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 14:55:09,672 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:09,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:09,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1793579968, now seen corresponding path program 28 times [2021-06-05 14:55:09,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:09,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047547528] [2021-06-05 14:55:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:09,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:09,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047547528] [2021-06-05 14:55:09,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047547528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:09,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:09,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:55:09,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416852098] [2021-06-05 14:55:09,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:55:09,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:09,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:55:09,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:55:09,724 INFO L87 Difference]: Start difference. First operand 377 states and 873 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:09,802 INFO L93 Difference]: Finished difference Result 397 states and 909 transitions. [2021-06-05 14:55:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:55:09,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:09,803 INFO L225 Difference]: With dead ends: 397 [2021-06-05 14:55:09,803 INFO L226 Difference]: Without dead ends: 327 [2021-06-05 14:55:09,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:55:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-06-05 14:55:09,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-06-05 14:55:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 2.3251533742331287) internal successors, (758), 326 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 758 transitions. [2021-06-05 14:55:09,808 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 758 transitions. Word has length 36 [2021-06-05 14:55:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:09,809 INFO L482 AbstractCegarLoop]: Abstraction has 327 states and 758 transitions. [2021-06-05 14:55:09,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,809 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 758 transitions. [2021-06-05 14:55:09,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 14:55:09,809 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:09,809 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] [2021-06-05 14:55:09,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 14:55:09,809 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:55:09,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:09,810 INFO L82 PathProgramCache]: Analyzing trace with hash -2007695822, now seen corresponding path program 29 times [2021-06-05 14:55:09,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:09,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682398140] [2021-06-05 14:55:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:09,840 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 14:55:09,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:09,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682398140] [2021-06-05 14:55:09,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682398140] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:09,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:09,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:55:09,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513682958] [2021-06-05 14:55:09,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:55:09,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:09,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:55:09,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:55:09,841 INFO L87 Difference]: Start difference. First operand 327 states and 758 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:09,873 INFO L93 Difference]: Finished difference Result 189 states and 426 transitions. [2021-06-05 14:55:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 14:55:09,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-06-05 14:55:09,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:09,874 INFO L225 Difference]: With dead ends: 189 [2021-06-05 14:55:09,874 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 14:55:09,875 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:55:09,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 14:55:09,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 14:55:09,875 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 14:55:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 14:55:09,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-06-05 14:55:09,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:09,875 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 14:55:09,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,875 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 14:55:09,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 14:55:09,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 14:55:09,877 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 14:55:09,879 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 02:55:09 BasicIcfg [2021-06-05 14:55:09,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 14:55:09,880 INFO L168 Benchmark]: Toolchain (without parser) took 5383.03 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 327.7 MB in the beginning and 275.8 MB in the end (delta: 51.9 MB). Peak memory consumption was 125.2 MB. Max. memory is 16.0 GB. [2021-06-05 14:55:09,880 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 348.1 MB. Free memory is still 328.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 14:55:09,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.11 ms. Allocated memory is still 348.1 MB. Free memory was 327.6 MB in the beginning and 326.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 14:55:09,880 INFO L168 Benchmark]: Boogie Preprocessor took 14.17 ms. Allocated memory is still 348.1 MB. Free memory was 326.1 MB in the beginning and 325.2 MB in the end (delta: 920.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 14:55:09,880 INFO L168 Benchmark]: RCFGBuilder took 247.32 ms. Allocated memory is still 348.1 MB. Free memory was 325.2 MB in the beginning and 312.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 14:55:09,880 INFO L168 Benchmark]: TraceAbstraction took 5096.12 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 312.3 MB in the beginning and 275.8 MB in the end (delta: 36.6 MB). Peak memory consumption was 108.5 MB. Max. memory is 16.0 GB. [2021-06-05 14:55:09,881 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 0.11 ms. Allocated memory is still 348.1 MB. Free memory is still 328.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.11 ms. Allocated memory is still 348.1 MB. Free memory was 327.6 MB in the beginning and 326.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.17 ms. Allocated memory is still 348.1 MB. Free memory was 326.1 MB in the beginning and 325.2 MB in the end (delta: 920.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 247.32 ms. Allocated memory is still 348.1 MB. Free memory was 325.2 MB in the beginning and 312.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5096.12 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 312.3 MB in the beginning and 275.8 MB in the end (delta: 36.6 MB). Peak memory consumption was 108.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: 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 7 procedures, 71 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4998.8ms, OverallIterations: 29, TraceHistogramMax: 1, EmptinessCheckTime: 51.4ms, AutomataDifference: 3051.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 51.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2558 SDtfs, 3423 SDslu, 8384 SDs, 0 SdLazy, 2986 SolverSat, 373 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1159.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1866.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=854occurred in iteration=7, InterpolantAutomatonStates: 337, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 391.9ms AutomataMinimizationTime, 29 MinimizatonAttempts, 6894 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.3ms SsaConstructionTime, 101.2ms SatisfiabilityAnalysisTime, 1119.0ms InterpolantComputationTime, 1044 NumberOfCodeBlocks, 1044 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1015 ConstructedInterpolants, 0 QuantifiedInterpolants, 3663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...