/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 14:50:39,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 14:50:39,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 14:50:39,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 14:50:39,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 14:50:39,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 14:50:39,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 14:50:39,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 14:50:39,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 14:50:39,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 14:50:39,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 14:50:39,429 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 14:50:39,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 14:50:39,429 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 14:50:39,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 14:50:39,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 14:50:39,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 14:50:39,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 14:50:39,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 14:50:39,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 14:50:39,430 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 14:50:39,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 14:50:39,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 14:50:39,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 14:50:39,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 14:50:39,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 14:50:39,431 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 14:50:39,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 14:50:39,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 14:50:39,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 14:50:39,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 14:50:39,670 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 14:50:39,671 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 14:50:39,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-06-05 14:50:39,686 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-06-05 14:50:39,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 14:50:39,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 14:50:39,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 14:50:39,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 14:50:39,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 14:50:39,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/1) ... [2021-06-05 14:50:39,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/1) ... [2021-06-05 14:50:39,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 14:50:39,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 14:50:39,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 14:50:39,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 14:50:39,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/1) ... [2021-06-05 14:50:39,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/1) ... [2021-06-05 14:50:39,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/1) ... [2021-06-05 14:50:39,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/1) ... [2021-06-05 14:50:39,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/1) ... [2021-06-05 14:50:39,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/1) ... [2021-06-05 14:50:39,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/1) ... [2021-06-05 14:50:39,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 14:50:39,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 14:50:39,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 14:50:39,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 14:50:39,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 14:50:39,807 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 14:50:39,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 14:50:39,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 14:50:39,808 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 14:50:39,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 14:50:39,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 14:50:39,808 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 14:50:39,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 14:50:39,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 14:50:39,808 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 14:50:39,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 14:50:39,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 14:50:39,809 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 14:50:39,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 14:50:39,942 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 14:50:39,943 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:50:39 BoogieIcfgContainer [2021-06-05 14:50:39,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 14:50:39,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 14:50:39,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 14:50:39,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 14:50:39,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:50:39" (1/2) ... [2021-06-05 14:50:39,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47041b91 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 02:50:39, skipping insertion in model container [2021-06-05 14:50:39,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:50:39" (2/2) ... [2021-06-05 14:50:39,948 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-06-05 14:50:39,951 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 14:50:39,951 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 14:50:39,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 14:50:39,952 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 14:50:40,024 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 14:50:40,040 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 14:50:40,052 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 14:50:40,053 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 14:50:40,053 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 14:50:40,053 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 14:50:40,053 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 14:50:40,053 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 14:50:40,053 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 14:50:40,053 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 14:50:40,059 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 53 transitions, 130 flow [2021-06-05 14:50:40,173 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:40,200 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:40,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:40,201 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash 21714732, now seen corresponding path program 1 times [2021-06-05 14:50:40,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:40,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813049603] [2021-06-05 14:50:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:40,478 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 14:50:40,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:40,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813049603] [2021-06-05 14:50:40,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813049603] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:40,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:40,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:40,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670548340] [2021-06-05 14:50:40,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:40,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:40,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:40,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:40,497 INFO L87 Difference]: Start difference. First operand has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 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 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:40,818 INFO L93 Difference]: Finished difference Result 5296 states and 14750 transitions. [2021-06-05 14:50:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 14:50:40,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:40,855 INFO L225 Difference]: With dead ends: 5296 [2021-06-05 14:50:40,855 INFO L226 Difference]: Without dead ends: 5296 [2021-06-05 14:50:40,856 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 147.7ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:50:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5296 states. [2021-06-05 14:50:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5296 to 4137. [2021-06-05 14:50:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 4136 states have (on average 2.775386847195358) internal successors, (11479), 4136 states have internal predecessors, (11479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 11479 transitions. [2021-06-05 14:50:41,054 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 11479 transitions. Word has length 48 [2021-06-05 14:50:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:41,054 INFO L482 AbstractCegarLoop]: Abstraction has 4137 states and 11479 transitions. [2021-06-05 14:50:41,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:41,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 11479 transitions. [2021-06-05 14:50:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:41,064 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:41,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:41,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 14:50:41,065 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:41,068 INFO L82 PathProgramCache]: Analyzing trace with hash -929108830, now seen corresponding path program 2 times [2021-06-05 14:50:41,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:41,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734450934] [2021-06-05 14:50:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:41,249 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 14:50:41,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:41,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734450934] [2021-06-05 14:50:41,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734450934] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:41,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:41,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:41,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584086753] [2021-06-05 14:50:41,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:41,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:41,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:41,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:41,251 INFO L87 Difference]: Start difference. First operand 4137 states and 11479 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:41,390 INFO L93 Difference]: Finished difference Result 5296 states and 14222 transitions. [2021-06-05 14:50:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 14:50:41,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:41,406 INFO L225 Difference]: With dead ends: 5296 [2021-06-05 14:50:41,406 INFO L226 Difference]: Without dead ends: 5103 [2021-06-05 14:50:41,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:50:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2021-06-05 14:50:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 4184. [2021-06-05 14:50:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4184 states, 4183 states have (on average 2.764044943820225) internal successors, (11562), 4183 states have internal predecessors, (11562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 11562 transitions. [2021-06-05 14:50:41,501 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 11562 transitions. Word has length 48 [2021-06-05 14:50:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:41,502 INFO L482 AbstractCegarLoop]: Abstraction has 4184 states and 11562 transitions. [2021-06-05 14:50:41,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 11562 transitions. [2021-06-05 14:50:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:41,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:41,508 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:41,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 14:50:41,508 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:41,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:41,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1921632898, now seen corresponding path program 3 times [2021-06-05 14:50:41,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:41,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7059530] [2021-06-05 14:50:41,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:41,688 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 14:50:41,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:41,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7059530] [2021-06-05 14:50:41,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7059530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:41,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:41,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 14:50:41,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850612907] [2021-06-05 14:50:41,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 14:50:41,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:41,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 14:50:41,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:50:41,692 INFO L87 Difference]: Start difference. First operand 4184 states and 11562 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:42,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:42,086 INFO L93 Difference]: Finished difference Result 6610 states and 17999 transitions. [2021-06-05 14:50:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 14:50:42,087 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:42,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:42,119 INFO L225 Difference]: With dead ends: 6610 [2021-06-05 14:50:42,120 INFO L226 Difference]: Without dead ends: 6580 [2021-06-05 14:50:42,120 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-06-05 14:50:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2021-06-05 14:50:42,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 4689. [2021-06-05 14:50:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4688 states have (on average 2.7361348122866893) internal successors, (12827), 4688 states have internal predecessors, (12827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 12827 transitions. [2021-06-05 14:50:42,236 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 12827 transitions. Word has length 48 [2021-06-05 14:50:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:42,236 INFO L482 AbstractCegarLoop]: Abstraction has 4689 states and 12827 transitions. [2021-06-05 14:50:42,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 12827 transitions. [2021-06-05 14:50:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:42,243 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:42,243 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:42,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 14:50:42,243 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:42,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:42,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1315335104, now seen corresponding path program 4 times [2021-06-05 14:50:42,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:42,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027104334] [2021-06-05 14:50:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:42,422 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 14:50:42,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:42,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027104334] [2021-06-05 14:50:42,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027104334] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:42,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:42,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 14:50:42,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356002550] [2021-06-05 14:50:42,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 14:50:42,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:42,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 14:50:42,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:50:42,423 INFO L87 Difference]: Start difference. First operand 4689 states and 12827 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:42,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:42,812 INFO L93 Difference]: Finished difference Result 6721 states and 18256 transitions. [2021-06-05 14:50:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 14:50:42,813 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:42,823 INFO L225 Difference]: With dead ends: 6721 [2021-06-05 14:50:42,823 INFO L226 Difference]: Without dead ends: 6721 [2021-06-05 14:50:42,823 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:50:42,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2021-06-05 14:50:42,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 4488. [2021-06-05 14:50:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 2.74793848896813) internal successors, (12330), 4487 states have internal predecessors, (12330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 12330 transitions. [2021-06-05 14:50:42,931 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 12330 transitions. Word has length 48 [2021-06-05 14:50:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:42,931 INFO L482 AbstractCegarLoop]: Abstraction has 4488 states and 12330 transitions. [2021-06-05 14:50:42,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 12330 transitions. [2021-06-05 14:50:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:42,938 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:42,938 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:42,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 14:50:42,938 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1820845956, now seen corresponding path program 5 times [2021-06-05 14:50:42,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:42,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82120925] [2021-06-05 14:50:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:43,001 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 14:50:43,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:43,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82120925] [2021-06-05 14:50:43,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82120925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:43,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:43,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:43,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617511581] [2021-06-05 14:50:43,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:43,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:43,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:43,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:43,005 INFO L87 Difference]: Start difference. First operand 4488 states and 12330 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:43,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:43,144 INFO L93 Difference]: Finished difference Result 5641 states and 15049 transitions. [2021-06-05 14:50:43,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 14:50:43,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:43,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:43,152 INFO L225 Difference]: With dead ends: 5641 [2021-06-05 14:50:43,153 INFO L226 Difference]: Without dead ends: 5161 [2021-06-05 14:50:43,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:50:43,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2021-06-05 14:50:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 4243. [2021-06-05 14:50:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4243 states, 4242 states have (on average 2.747053276756247) internal successors, (11653), 4242 states have internal predecessors, (11653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 11653 transitions. [2021-06-05 14:50:43,245 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 11653 transitions. Word has length 48 [2021-06-05 14:50:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:43,245 INFO L482 AbstractCegarLoop]: Abstraction has 4243 states and 11653 transitions. [2021-06-05 14:50:43,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 11653 transitions. [2021-06-05 14:50:43,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:43,251 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:43,251 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:43,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 14:50:43,251 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:43,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:43,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1271126176, now seen corresponding path program 6 times [2021-06-05 14:50:43,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:43,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270039835] [2021-06-05 14:50:43,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:43,264 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 14:50:43,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:43,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270039835] [2021-06-05 14:50:43,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270039835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:43,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:43,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:50:43,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650234868] [2021-06-05 14:50:43,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:50:43,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:43,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:50:43,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:50:43,265 INFO L87 Difference]: Start difference. First operand 4243 states and 11653 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:43,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:43,279 INFO L93 Difference]: Finished difference Result 4195 states and 11359 transitions. [2021-06-05 14:50:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:50:43,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:43,285 INFO L225 Difference]: With dead ends: 4195 [2021-06-05 14:50:43,285 INFO L226 Difference]: Without dead ends: 4183 [2021-06-05 14:50:43,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:50:43,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2021-06-05 14:50:43,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 4183. [2021-06-05 14:50:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4183 states, 4182 states have (on average 2.7082735533237687) internal successors, (11326), 4182 states have internal predecessors, (11326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 11326 transitions. [2021-06-05 14:50:43,353 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 11326 transitions. Word has length 48 [2021-06-05 14:50:43,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:43,353 INFO L482 AbstractCegarLoop]: Abstraction has 4183 states and 11326 transitions. [2021-06-05 14:50:43,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 11326 transitions. [2021-06-05 14:50:43,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:43,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:43,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:43,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 14:50:43,359 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:43,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:43,359 INFO L82 PathProgramCache]: Analyzing trace with hash -3563124, now seen corresponding path program 7 times [2021-06-05 14:50:43,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:43,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131344376] [2021-06-05 14:50:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:43,444 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 14:50:43,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:43,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131344376] [2021-06-05 14:50:43,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131344376] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:43,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:43,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:43,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753914606] [2021-06-05 14:50:43,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:43,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:43,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:43,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:43,445 INFO L87 Difference]: Start difference. First operand 4183 states and 11326 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:43,645 INFO L93 Difference]: Finished difference Result 5052 states and 13458 transitions. [2021-06-05 14:50:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:50:43,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:43,653 INFO L225 Difference]: With dead ends: 5052 [2021-06-05 14:50:43,653 INFO L226 Difference]: Without dead ends: 4789 [2021-06-05 14:50:43,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:43,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4789 states. [2021-06-05 14:50:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4789 to 4195. [2021-06-05 14:50:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4195 states, 4194 states have (on average 2.7067238912732474) internal successors, (11352), 4194 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:43,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4195 states to 4195 states and 11352 transitions. [2021-06-05 14:50:43,743 INFO L78 Accepts]: Start accepts. Automaton has 4195 states and 11352 transitions. Word has length 48 [2021-06-05 14:50:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:43,743 INFO L482 AbstractCegarLoop]: Abstraction has 4195 states and 11352 transitions. [2021-06-05 14:50:43,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:43,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4195 states and 11352 transitions. [2021-06-05 14:50:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:43,749 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:43,749 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:43,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 14:50:43,749 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:43,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:43,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1405904278, now seen corresponding path program 8 times [2021-06-05 14:50:43,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:43,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825320514] [2021-06-05 14:50:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:43,868 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 14:50:43,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:43,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825320514] [2021-06-05 14:50:43,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825320514] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:43,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:43,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 14:50:43,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586057497] [2021-06-05 14:50:43,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 14:50:43,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:43,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 14:50:43,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:50:43,870 INFO L87 Difference]: Start difference. First operand 4195 states and 11352 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:44,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:44,265 INFO L93 Difference]: Finished difference Result 5958 states and 16031 transitions. [2021-06-05 14:50:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 14:50:44,269 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:44,276 INFO L225 Difference]: With dead ends: 5958 [2021-06-05 14:50:44,277 INFO L226 Difference]: Without dead ends: 5195 [2021-06-05 14:50:44,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 176.2ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-06-05 14:50:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5195 states. [2021-06-05 14:50:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5195 to 4186. [2021-06-05 14:50:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4185 states have (on average 2.705137395459976) internal successors, (11321), 4185 states have internal predecessors, (11321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 11321 transitions. [2021-06-05 14:50:44,347 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 11321 transitions. Word has length 48 [2021-06-05 14:50:44,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:44,348 INFO L482 AbstractCegarLoop]: Abstraction has 4186 states and 11321 transitions. [2021-06-05 14:50:44,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 11321 transitions. [2021-06-05 14:50:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:44,353 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:44,354 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:44,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 14:50:44,354 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:44,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1813768894, now seen corresponding path program 9 times [2021-06-05 14:50:44,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:44,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622560805] [2021-06-05 14:50:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:44,470 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 14:50:44,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:44,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622560805] [2021-06-05 14:50:44,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622560805] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:44,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:44,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:44,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077667563] [2021-06-05 14:50:44,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:44,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:44,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:44,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:44,472 INFO L87 Difference]: Start difference. First operand 4186 states and 11321 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:44,770 INFO L93 Difference]: Finished difference Result 10394 states and 28527 transitions. [2021-06-05 14:50:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 14:50:44,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:44,783 INFO L225 Difference]: With dead ends: 10394 [2021-06-05 14:50:44,783 INFO L226 Difference]: Without dead ends: 10348 [2021-06-05 14:50:44,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:50:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2021-06-05 14:50:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 4829. [2021-06-05 14:50:44,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4829 states, 4828 states have (on average 2.714374482187241) internal successors, (13105), 4828 states have internal predecessors, (13105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 13105 transitions. [2021-06-05 14:50:44,884 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 13105 transitions. Word has length 48 [2021-06-05 14:50:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:44,884 INFO L482 AbstractCegarLoop]: Abstraction has 4829 states and 13105 transitions. [2021-06-05 14:50:44,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 13105 transitions. [2021-06-05 14:50:44,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:44,890 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:44,890 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:44,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 14:50:44,891 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:44,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:44,891 INFO L82 PathProgramCache]: Analyzing trace with hash -962288318, now seen corresponding path program 10 times [2021-06-05 14:50:44,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:44,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351679173] [2021-06-05 14:50:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:44,990 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 14:50:44,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:44,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351679173] [2021-06-05 14:50:44,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351679173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:44,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:44,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:44,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327297019] [2021-06-05 14:50:44,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:44,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:44,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:44,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:44,992 INFO L87 Difference]: Start difference. First operand 4829 states and 13105 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:45,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:45,269 INFO L93 Difference]: Finished difference Result 10579 states and 28918 transitions. [2021-06-05 14:50:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 14:50:45,269 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:45,282 INFO L225 Difference]: With dead ends: 10579 [2021-06-05 14:50:45,282 INFO L226 Difference]: Without dead ends: 10116 [2021-06-05 14:50:45,284 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 147.6ms TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:50:45,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2021-06-05 14:50:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 4940. [2021-06-05 14:50:45,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4940 states, 4939 states have (on average 2.7064183033002633) internal successors, (13367), 4939 states have internal predecessors, (13367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4940 states to 4940 states and 13367 transitions. [2021-06-05 14:50:45,383 INFO L78 Accepts]: Start accepts. Automaton has 4940 states and 13367 transitions. Word has length 48 [2021-06-05 14:50:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:45,384 INFO L482 AbstractCegarLoop]: Abstraction has 4940 states and 13367 transitions. [2021-06-05 14:50:45,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4940 states and 13367 transitions. [2021-06-05 14:50:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:45,390 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:45,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:45,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 14:50:45,390 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:45,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:45,391 INFO L82 PathProgramCache]: Analyzing trace with hash 556588354, now seen corresponding path program 11 times [2021-06-05 14:50:45,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:45,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196367704] [2021-06-05 14:50:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:45,547 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 14:50:45,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:45,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196367704] [2021-06-05 14:50:45,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196367704] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:45,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:45,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 14:50:45,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687409057] [2021-06-05 14:50:45,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 14:50:45,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:45,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 14:50:45,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-06-05 14:50:45,549 INFO L87 Difference]: Start difference. First operand 4940 states and 13367 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:46,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:46,014 INFO L93 Difference]: Finished difference Result 10992 states and 28956 transitions. [2021-06-05 14:50:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 14:50:46,014 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:46,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:46,025 INFO L225 Difference]: With dead ends: 10992 [2021-06-05 14:50:46,025 INFO L226 Difference]: Without dead ends: 10476 [2021-06-05 14:50:46,026 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 207.4ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-06-05 14:50:46,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10476 states. [2021-06-05 14:50:46,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10476 to 5600. [2021-06-05 14:50:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 5599 states have (on average 2.7051259153420255) internal successors, (15146), 5599 states have internal predecessors, (15146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 15146 transitions. [2021-06-05 14:50:46,138 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 15146 transitions. Word has length 48 [2021-06-05 14:50:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:46,138 INFO L482 AbstractCegarLoop]: Abstraction has 5600 states and 15146 transitions. [2021-06-05 14:50:46,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 15146 transitions. [2021-06-05 14:50:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:46,145 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:46,145 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:46,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 14:50:46,145 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:46,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:46,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1232770074, now seen corresponding path program 12 times [2021-06-05 14:50:46,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:46,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888081054] [2021-06-05 14:50:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:46,233 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 14:50:46,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:46,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888081054] [2021-06-05 14:50:46,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888081054] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:46,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:46,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:50:46,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984133894] [2021-06-05 14:50:46,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:50:46,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:46,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:50:46,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:50:46,234 INFO L87 Difference]: Start difference. First operand 5600 states and 15146 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:46,473 INFO L93 Difference]: Finished difference Result 9309 states and 24818 transitions. [2021-06-05 14:50:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 14:50:46,473 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:46,482 INFO L225 Difference]: With dead ends: 9309 [2021-06-05 14:50:46,482 INFO L226 Difference]: Without dead ends: 8873 [2021-06-05 14:50:46,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-06-05 14:50:46,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8873 states. [2021-06-05 14:50:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8873 to 6236. [2021-06-05 14:50:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 2.6882117080994385) internal successors, (16761), 6235 states have internal predecessors, (16761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 16761 transitions. [2021-06-05 14:50:46,616 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 16761 transitions. Word has length 48 [2021-06-05 14:50:46,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:46,616 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 16761 transitions. [2021-06-05 14:50:46,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:46,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 16761 transitions. [2021-06-05 14:50:46,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:46,625 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:46,625 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:46,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 14:50:46,625 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:46,625 INFO L82 PathProgramCache]: Analyzing trace with hash -80771658, now seen corresponding path program 13 times [2021-06-05 14:50:46,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:46,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343692544] [2021-06-05 14:50:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:46,740 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 14:50:46,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:46,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343692544] [2021-06-05 14:50:46,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343692544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:46,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:46,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:50:46,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887813652] [2021-06-05 14:50:46,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:50:46,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:46,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:50:46,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:50:46,741 INFO L87 Difference]: Start difference. First operand 6236 states and 16761 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:46,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:46,985 INFO L93 Difference]: Finished difference Result 7152 states and 19114 transitions. [2021-06-05 14:50:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 14:50:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:46,992 INFO L225 Difference]: With dead ends: 7152 [2021-06-05 14:50:46,992 INFO L226 Difference]: Without dead ends: 7152 [2021-06-05 14:50:46,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:50:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7152 states. [2021-06-05 14:50:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7152 to 6356. [2021-06-05 14:50:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6356 states, 6355 states have (on average 2.68324154209284) internal successors, (17052), 6355 states have internal predecessors, (17052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 17052 transitions. [2021-06-05 14:50:47,117 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 17052 transitions. Word has length 48 [2021-06-05 14:50:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:47,117 INFO L482 AbstractCegarLoop]: Abstraction has 6356 states and 17052 transitions. [2021-06-05 14:50:47,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 17052 transitions. [2021-06-05 14:50:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:47,127 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:47,127 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:47,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 14:50:47,128 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash 355340122, now seen corresponding path program 14 times [2021-06-05 14:50:47,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:47,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691551600] [2021-06-05 14:50:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:47,245 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 14:50:47,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:47,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691551600] [2021-06-05 14:50:47,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691551600] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:47,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:47,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 14:50:47,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373871760] [2021-06-05 14:50:47,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 14:50:47,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:47,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 14:50:47,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:50:47,247 INFO L87 Difference]: Start difference. First operand 6356 states and 17052 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:47,499 INFO L93 Difference]: Finished difference Result 7659 states and 20286 transitions. [2021-06-05 14:50:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 14:50:47,499 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:47,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:47,505 INFO L225 Difference]: With dead ends: 7659 [2021-06-05 14:50:47,505 INFO L226 Difference]: Without dead ends: 7395 [2021-06-05 14:50:47,505 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:50:47,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7395 states. [2021-06-05 14:50:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7395 to 6236. [2021-06-05 14:50:47,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 2.6843624699278266) internal successors, (16737), 6235 states have internal predecessors, (16737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 16737 transitions. [2021-06-05 14:50:47,597 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 16737 transitions. Word has length 48 [2021-06-05 14:50:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:47,597 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 16737 transitions. [2021-06-05 14:50:47,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:47,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 16737 transitions. [2021-06-05 14:50:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:47,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:47,606 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:47,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 14:50:47,606 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:47,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:47,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1889183876, now seen corresponding path program 15 times [2021-06-05 14:50:47,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:47,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140590106] [2021-06-05 14:50:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:47,756 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 14:50:47,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:47,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140590106] [2021-06-05 14:50:47,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140590106] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:47,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:47,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 14:50:47,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175996698] [2021-06-05 14:50:47,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 14:50:47,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:47,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 14:50:47,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 14:50:47,758 INFO L87 Difference]: Start difference. First operand 6236 states and 16737 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:48,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:48,063 INFO L93 Difference]: Finished difference Result 10117 states and 26888 transitions. [2021-06-05 14:50:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 14:50:48,064 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:48,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:48,073 INFO L225 Difference]: With dead ends: 10117 [2021-06-05 14:50:48,073 INFO L226 Difference]: Without dead ends: 10081 [2021-06-05 14:50:48,073 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 185.7ms TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:50:48,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10081 states. [2021-06-05 14:50:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10081 to 6383. [2021-06-05 14:50:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6383 states, 6382 states have (on average 2.680664368536509) internal successors, (17108), 6382 states have internal predecessors, (17108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:48,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6383 states to 6383 states and 17108 transitions. [2021-06-05 14:50:48,181 INFO L78 Accepts]: Start accepts. Automaton has 6383 states and 17108 transitions. Word has length 48 [2021-06-05 14:50:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:48,182 INFO L482 AbstractCegarLoop]: Abstraction has 6383 states and 17108 transitions. [2021-06-05 14:50:48,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 6383 states and 17108 transitions. [2021-06-05 14:50:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:48,188 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:48,188 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:48,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 14:50:48,188 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:48,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1104515038, now seen corresponding path program 16 times [2021-06-05 14:50:48,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:48,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510999241] [2021-06-05 14:50:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:48,242 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 14:50:48,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:48,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510999241] [2021-06-05 14:50:48,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510999241] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:48,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:48,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:48,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126759268] [2021-06-05 14:50:48,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:48,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:48,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:48,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:48,244 INFO L87 Difference]: Start difference. First operand 6383 states and 17108 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:48,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:48,368 INFO L93 Difference]: Finished difference Result 8915 states and 23684 transitions. [2021-06-05 14:50:48,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:50:48,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:48,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:48,377 INFO L225 Difference]: With dead ends: 8915 [2021-06-05 14:50:48,377 INFO L226 Difference]: Without dead ends: 7926 [2021-06-05 14:50:48,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-06-05 14:50:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7926 states. [2021-06-05 14:50:48,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7926 to 5742. [2021-06-05 14:50:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5741 states have (on average 2.653718864309354) internal successors, (15235), 5741 states have internal predecessors, (15235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 15235 transitions. [2021-06-05 14:50:48,468 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 15235 transitions. Word has length 48 [2021-06-05 14:50:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:48,468 INFO L482 AbstractCegarLoop]: Abstraction has 5742 states and 15235 transitions. [2021-06-05 14:50:48,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 15235 transitions. [2021-06-05 14:50:48,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:48,474 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:48,474 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:48,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 14:50:48,474 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:48,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:48,475 INFO L82 PathProgramCache]: Analyzing trace with hash 271395798, now seen corresponding path program 17 times [2021-06-05 14:50:48,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:48,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723413373] [2021-06-05 14:50:48,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:48,555 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 14:50:48,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:48,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723413373] [2021-06-05 14:50:48,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723413373] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:48,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:48,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:50:48,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385835054] [2021-06-05 14:50:48,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:50:48,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:48,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:50:48,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:48,557 INFO L87 Difference]: Start difference. First operand 5742 states and 15235 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:48,778 INFO L93 Difference]: Finished difference Result 6475 states and 17030 transitions. [2021-06-05 14:50:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 14:50:48,778 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:48,783 INFO L225 Difference]: With dead ends: 6475 [2021-06-05 14:50:48,783 INFO L226 Difference]: Without dead ends: 6237 [2021-06-05 14:50:48,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 77.5ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-06-05 14:50:48,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2021-06-05 14:50:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 5579. [2021-06-05 14:50:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5579 states, 5578 states have (on average 2.6509501613481534) internal successors, (14787), 5578 states have internal predecessors, (14787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5579 states to 5579 states and 14787 transitions. [2021-06-05 14:50:48,856 INFO L78 Accepts]: Start accepts. Automaton has 5579 states and 14787 transitions. Word has length 48 [2021-06-05 14:50:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:48,856 INFO L482 AbstractCegarLoop]: Abstraction has 5579 states and 14787 transitions. [2021-06-05 14:50:48,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5579 states and 14787 transitions. [2021-06-05 14:50:48,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:48,861 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:48,861 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:48,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 14:50:48,862 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:48,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:48,862 INFO L82 PathProgramCache]: Analyzing trace with hash 707507578, now seen corresponding path program 18 times [2021-06-05 14:50:48,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:48,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731196893] [2021-06-05 14:50:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:48,945 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 14:50:48,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:48,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731196893] [2021-06-05 14:50:48,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731196893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:48,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:48,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:50:48,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504006802] [2021-06-05 14:50:48,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:50:48,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:48,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:50:48,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:48,946 INFO L87 Difference]: Start difference. First operand 5579 states and 14787 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:49,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:49,215 INFO L93 Difference]: Finished difference Result 6360 states and 16745 transitions. [2021-06-05 14:50:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 14:50:49,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:49,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:49,221 INFO L225 Difference]: With dead ends: 6360 [2021-06-05 14:50:49,221 INFO L226 Difference]: Without dead ends: 5998 [2021-06-05 14:50:49,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-06-05 14:50:49,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5998 states. [2021-06-05 14:50:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5998 to 5340. [2021-06-05 14:50:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 2.6606106012361868) internal successors, (14205), 5339 states have internal predecessors, (14205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 14205 transitions. [2021-06-05 14:50:49,287 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 14205 transitions. Word has length 48 [2021-06-05 14:50:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:49,287 INFO L482 AbstractCegarLoop]: Abstraction has 5340 states and 14205 transitions. [2021-06-05 14:50:49,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 14205 transitions. [2021-06-05 14:50:49,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:49,292 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:49,292 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:49,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 14:50:49,292 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:49,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1707987518, now seen corresponding path program 19 times [2021-06-05 14:50:49,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:49,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806313872] [2021-06-05 14:50:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:49,375 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 14:50:49,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:49,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806313872] [2021-06-05 14:50:49,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806313872] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:49,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:49,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:50:49,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023204559] [2021-06-05 14:50:49,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:50:49,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:49,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:50:49,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:49,376 INFO L87 Difference]: Start difference. First operand 5340 states and 14205 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:49,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:49,569 INFO L93 Difference]: Finished difference Result 6454 states and 16972 transitions. [2021-06-05 14:50:49,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 14:50:49,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:49,577 INFO L225 Difference]: With dead ends: 6454 [2021-06-05 14:50:49,577 INFO L226 Difference]: Without dead ends: 6424 [2021-06-05 14:50:49,577 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-06-05 14:50:49,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6424 states. [2021-06-05 14:50:49,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6424 to 5412. [2021-06-05 14:50:49,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5411 states have (on average 2.6579190537793385) internal successors, (14382), 5411 states have internal predecessors, (14382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 14382 transitions. [2021-06-05 14:50:49,644 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 14382 transitions. Word has length 48 [2021-06-05 14:50:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:49,644 INFO L482 AbstractCegarLoop]: Abstraction has 5412 states and 14382 transitions. [2021-06-05 14:50:49,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 14382 transitions. [2021-06-05 14:50:49,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:49,648 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:49,648 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:49,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 14:50:49,648 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:49,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:49,648 INFO L82 PathProgramCache]: Analyzing trace with hash -406719136, now seen corresponding path program 20 times [2021-06-05 14:50:49,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:49,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832831806] [2021-06-05 14:50:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:49,704 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 14:50:49,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:49,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832831806] [2021-06-05 14:50:49,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832831806] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:49,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:49,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:49,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208515518] [2021-06-05 14:50:49,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:49,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:49,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:49,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:49,705 INFO L87 Difference]: Start difference. First operand 5412 states and 14382 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:49,884 INFO L93 Difference]: Finished difference Result 7894 states and 20847 transitions. [2021-06-05 14:50:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 14:50:49,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:49,891 INFO L225 Difference]: With dead ends: 7894 [2021-06-05 14:50:49,891 INFO L226 Difference]: Without dead ends: 7798 [2021-06-05 14:50:49,891 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:50:49,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7798 states. [2021-06-05 14:50:49,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7798 to 5277. [2021-06-05 14:50:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 5276 states have (on average 2.6639499620924942) internal successors, (14055), 5276 states have internal predecessors, (14055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 14055 transitions. [2021-06-05 14:50:49,966 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 14055 transitions. Word has length 48 [2021-06-05 14:50:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:49,966 INFO L482 AbstractCegarLoop]: Abstraction has 5277 states and 14055 transitions. [2021-06-05 14:50:49,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 14055 transitions. [2021-06-05 14:50:49,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:49,970 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:49,970 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:49,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 14:50:49,970 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:49,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:49,971 INFO L82 PathProgramCache]: Analyzing trace with hash 994715074, now seen corresponding path program 21 times [2021-06-05 14:50:49,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:49,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572211507] [2021-06-05 14:50:49,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:49,977 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 14:50:49,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:49,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572211507] [2021-06-05 14:50:49,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572211507] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:49,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:49,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:50:49,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792671150] [2021-06-05 14:50:49,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:50:49,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:49,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:50:49,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:50:49,978 INFO L87 Difference]: Start difference. First operand 5277 states and 14055 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:49,989 INFO L93 Difference]: Finished difference Result 4552 states and 11743 transitions. [2021-06-05 14:50:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:50:49,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:49,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:49,992 INFO L225 Difference]: With dead ends: 4552 [2021-06-05 14:50:49,992 INFO L226 Difference]: Without dead ends: 4418 [2021-06-05 14:50:49,992 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:50:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2021-06-05 14:50:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4370. [2021-06-05 14:50:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4369 states have (on average 2.5934996566720074) internal successors, (11331), 4369 states have internal predecessors, (11331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 11331 transitions. [2021-06-05 14:50:50,053 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 11331 transitions. Word has length 48 [2021-06-05 14:50:50,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:50,054 INFO L482 AbstractCegarLoop]: Abstraction has 4370 states and 11331 transitions. [2021-06-05 14:50:50,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 11331 transitions. [2021-06-05 14:50:50,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:50,058 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:50,058 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:50,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 14:50:50,058 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:50,058 INFO L82 PathProgramCache]: Analyzing trace with hash 76293474, now seen corresponding path program 22 times [2021-06-05 14:50:50,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:50,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191000845] [2021-06-05 14:50:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:50,080 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 14:50:50,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:50,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191000845] [2021-06-05 14:50:50,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191000845] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:50,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:50,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:50:50,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868218842] [2021-06-05 14:50:50,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:50:50,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:50,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:50:50,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:50:50,081 INFO L87 Difference]: Start difference. First operand 4370 states and 11331 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:50,091 INFO L93 Difference]: Finished difference Result 4250 states and 10780 transitions. [2021-06-05 14:50:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:50:50,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:50,094 INFO L225 Difference]: With dead ends: 4250 [2021-06-05 14:50:50,094 INFO L226 Difference]: Without dead ends: 4250 [2021-06-05 14:50:50,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:50:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-06-05 14:50:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 4250. [2021-06-05 14:50:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4250 states, 4249 states have (on average 2.5370675453047777) internal successors, (10780), 4249 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 10780 transitions. [2021-06-05 14:50:50,142 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 10780 transitions. Word has length 48 [2021-06-05 14:50:50,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:50,143 INFO L482 AbstractCegarLoop]: Abstraction has 4250 states and 10780 transitions. [2021-06-05 14:50:50,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 10780 transitions. [2021-06-05 14:50:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:50,146 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:50,146 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:50,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 14:50:50,146 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:50,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1673336162, now seen corresponding path program 23 times [2021-06-05 14:50:50,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:50,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042435903] [2021-06-05 14:50:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:50,191 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 14:50:50,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:50,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042435903] [2021-06-05 14:50:50,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042435903] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:50,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:50,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:50,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309404331] [2021-06-05 14:50:50,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:50,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:50,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:50,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:50,193 INFO L87 Difference]: Start difference. First operand 4250 states and 10780 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:50,294 INFO L93 Difference]: Finished difference Result 4826 states and 12069 transitions. [2021-06-05 14:50:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 14:50:50,294 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:50,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:50,298 INFO L225 Difference]: With dead ends: 4826 [2021-06-05 14:50:50,298 INFO L226 Difference]: Without dead ends: 4486 [2021-06-05 14:50:50,298 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:50:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2021-06-05 14:50:50,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 4162. [2021-06-05 14:50:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 4161 states have (on average 2.5231915404950733) internal successors, (10499), 4161 states have internal predecessors, (10499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 10499 transitions. [2021-06-05 14:50:50,346 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 10499 transitions. Word has length 48 [2021-06-05 14:50:50,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:50,347 INFO L482 AbstractCegarLoop]: Abstraction has 4162 states and 10499 transitions. [2021-06-05 14:50:50,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 10499 transitions. [2021-06-05 14:50:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:50,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:50,350 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:50,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 14:50:50,350 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:50,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:50,351 INFO L82 PathProgramCache]: Analyzing trace with hash -869937714, now seen corresponding path program 24 times [2021-06-05 14:50:50,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:50,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483346215] [2021-06-05 14:50:50,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:50,418 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 14:50:50,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:50,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483346215] [2021-06-05 14:50:50,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483346215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:50,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:50,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:50:50,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286083230] [2021-06-05 14:50:50,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:50:50,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:50,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:50:50,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:50,419 INFO L87 Difference]: Start difference. First operand 4162 states and 10499 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:50,651 INFO L93 Difference]: Finished difference Result 6178 states and 15407 transitions. [2021-06-05 14:50:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 14:50:50,652 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:50,656 INFO L225 Difference]: With dead ends: 6178 [2021-06-05 14:50:50,657 INFO L226 Difference]: Without dead ends: 6020 [2021-06-05 14:50:50,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-06-05 14:50:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6020 states. [2021-06-05 14:50:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6020 to 4186. [2021-06-05 14:50:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4185 states have (on average 2.521624850657109) internal successors, (10553), 4185 states have internal predecessors, (10553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 10553 transitions. [2021-06-05 14:50:50,714 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 10553 transitions. Word has length 48 [2021-06-05 14:50:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:50,714 INFO L482 AbstractCegarLoop]: Abstraction has 4186 states and 10553 transitions. [2021-06-05 14:50:50,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 10553 transitions. [2021-06-05 14:50:50,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:50,717 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:50,717 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:50,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 14:50:50,718 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:50,718 INFO L82 PathProgramCache]: Analyzing trace with hash -221230618, now seen corresponding path program 25 times [2021-06-05 14:50:50,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:50,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448139292] [2021-06-05 14:50:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:50,789 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 14:50:50,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:50,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448139292] [2021-06-05 14:50:50,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448139292] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:50,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:50,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:50:50,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189029050] [2021-06-05 14:50:50,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:50:50,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:50,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:50:50,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:50,790 INFO L87 Difference]: Start difference. First operand 4186 states and 10553 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:50,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:50,925 INFO L93 Difference]: Finished difference Result 6074 states and 15232 transitions. [2021-06-05 14:50:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:50,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:50,931 INFO L225 Difference]: With dead ends: 6074 [2021-06-05 14:50:50,931 INFO L226 Difference]: Without dead ends: 6010 [2021-06-05 14:50:50,931 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6010 states. [2021-06-05 14:50:50,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6010 to 4817. [2021-06-05 14:50:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4817 states, 4816 states have (on average 2.514950166112957) internal successors, (12112), 4816 states have internal predecessors, (12112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4817 states to 4817 states and 12112 transitions. [2021-06-05 14:50:51,013 INFO L78 Accepts]: Start accepts. Automaton has 4817 states and 12112 transitions. Word has length 48 [2021-06-05 14:50:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:51,013 INFO L482 AbstractCegarLoop]: Abstraction has 4817 states and 12112 transitions. [2021-06-05 14:50:51,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4817 states and 12112 transitions. [2021-06-05 14:50:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:51,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:51,030 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:51,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 14:50:51,030 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash 773664548, now seen corresponding path program 26 times [2021-06-05 14:50:51,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:51,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489009736] [2021-06-05 14:50:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:51,096 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 14:50:51,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:51,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489009736] [2021-06-05 14:50:51,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489009736] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:51,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:51,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:50:51,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956099432] [2021-06-05 14:50:51,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:50:51,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:51,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:50:51,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:51,098 INFO L87 Difference]: Start difference. First operand 4817 states and 12112 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:51,234 INFO L93 Difference]: Finished difference Result 5483 states and 13653 transitions. [2021-06-05 14:50:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:51,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:51,238 INFO L225 Difference]: With dead ends: 5483 [2021-06-05 14:50:51,238 INFO L226 Difference]: Without dead ends: 5285 [2021-06-05 14:50:51,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:51,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5285 states. [2021-06-05 14:50:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5285 to 4721. [2021-06-05 14:50:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 4720 states have (on average 2.510593220338983) internal successors, (11850), 4720 states have internal predecessors, (11850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 11850 transitions. [2021-06-05 14:50:51,308 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 11850 transitions. Word has length 48 [2021-06-05 14:50:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:51,308 INFO L482 AbstractCegarLoop]: Abstraction has 4721 states and 11850 transitions. [2021-06-05 14:50:51,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 11850 transitions. [2021-06-05 14:50:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:51,312 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:51,312 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:51,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 14:50:51,312 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:51,312 INFO L82 PathProgramCache]: Analyzing trace with hash -458909894, now seen corresponding path program 27 times [2021-06-05 14:50:51,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:51,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122251129] [2021-06-05 14:50:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:51,356 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 14:50:51,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:51,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122251129] [2021-06-05 14:50:51,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122251129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:51,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:51,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:51,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258596166] [2021-06-05 14:50:51,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:51,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:51,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:51,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:51,357 INFO L87 Difference]: Start difference. First operand 4721 states and 11850 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:51,466 INFO L93 Difference]: Finished difference Result 5071 states and 12592 transitions. [2021-06-05 14:50:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 14:50:51,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:51,470 INFO L225 Difference]: With dead ends: 5071 [2021-06-05 14:50:51,470 INFO L226 Difference]: Without dead ends: 4977 [2021-06-05 14:50:51,471 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 86.1ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:50:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2021-06-05 14:50:51,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4701. [2021-06-05 14:50:51,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4701 states, 4700 states have (on average 2.5063829787234044) internal successors, (11780), 4700 states have internal predecessors, (11780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4701 states to 4701 states and 11780 transitions. [2021-06-05 14:50:51,522 INFO L78 Accepts]: Start accepts. Automaton has 4701 states and 11780 transitions. Word has length 48 [2021-06-05 14:50:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:51,522 INFO L482 AbstractCegarLoop]: Abstraction has 4701 states and 11780 transitions. [2021-06-05 14:50:51,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 11780 transitions. [2021-06-05 14:50:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:51,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:51,526 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:51,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 14:50:51,526 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:51,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:51,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1054099754, now seen corresponding path program 28 times [2021-06-05 14:50:51,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:51,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542561694] [2021-06-05 14:50:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:51,582 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 14:50:51,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:51,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542561694] [2021-06-05 14:50:51,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542561694] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:51,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:51,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:50:51,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627228352] [2021-06-05 14:50:51,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:50:51,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:51,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:50:51,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:51,583 INFO L87 Difference]: Start difference. First operand 4701 states and 11780 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:51,729 INFO L93 Difference]: Finished difference Result 5012 states and 12428 transitions. [2021-06-05 14:50:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:50:51,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:51,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:51,734 INFO L225 Difference]: With dead ends: 5012 [2021-06-05 14:50:51,734 INFO L226 Difference]: Without dead ends: 4956 [2021-06-05 14:50:51,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2021-06-05 14:50:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4626. [2021-06-05 14:50:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4625 states have (on average 2.4966486486486485) internal successors, (11547), 4625 states have internal predecessors, (11547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 11547 transitions. [2021-06-05 14:50:51,787 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 11547 transitions. Word has length 48 [2021-06-05 14:50:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:51,787 INFO L482 AbstractCegarLoop]: Abstraction has 4626 states and 11547 transitions. [2021-06-05 14:50:51,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 11547 transitions. [2021-06-05 14:50:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:51,791 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:51,792 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:51,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 14:50:51,792 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:51,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:51,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1231787908, now seen corresponding path program 29 times [2021-06-05 14:50:51,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:51,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032149678] [2021-06-05 14:50:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:51,854 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 14:50:51,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:51,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032149678] [2021-06-05 14:50:51,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032149678] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:51,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:51,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:50:51,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461663603] [2021-06-05 14:50:51,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:50:51,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:51,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:50:51,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:51,856 INFO L87 Difference]: Start difference. First operand 4626 states and 11547 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:52,004 INFO L93 Difference]: Finished difference Result 5161 states and 12755 transitions. [2021-06-05 14:50:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:52,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:52,009 INFO L225 Difference]: With dead ends: 5161 [2021-06-05 14:50:52,009 INFO L226 Difference]: Without dead ends: 5097 [2021-06-05 14:50:52,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 65.6ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2021-06-05 14:50:52,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 4562. [2021-06-05 14:50:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4562 states, 4561 states have (on average 2.4930936198202147) internal successors, (11371), 4561 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4562 states to 4562 states and 11371 transitions. [2021-06-05 14:50:52,068 INFO L78 Accepts]: Start accepts. Automaton has 4562 states and 11371 transitions. Word has length 48 [2021-06-05 14:50:52,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:52,069 INFO L482 AbstractCegarLoop]: Abstraction has 4562 states and 11371 transitions. [2021-06-05 14:50:52,069 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4562 states and 11371 transitions. [2021-06-05 14:50:52,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:52,072 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:52,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:52,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 14:50:52,072 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:52,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:52,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2068284222, now seen corresponding path program 30 times [2021-06-05 14:50:52,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:52,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773425683] [2021-06-05 14:50:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:50:52,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:52,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773425683] [2021-06-05 14:50:52,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773425683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:52,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:52,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:50:52,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081965741] [2021-06-05 14:50:52,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:50:52,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:52,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:50:52,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:52,137 INFO L87 Difference]: Start difference. First operand 4562 states and 11371 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:52,262 INFO L93 Difference]: Finished difference Result 4731 states and 11602 transitions. [2021-06-05 14:50:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:52,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:52,266 INFO L225 Difference]: With dead ends: 4731 [2021-06-05 14:50:52,266 INFO L226 Difference]: Without dead ends: 4554 [2021-06-05 14:50:52,267 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2021-06-05 14:50:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 3648. [2021-06-05 14:50:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 2.4798464491362764) internal successors, (9044), 3647 states have internal predecessors, (9044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 9044 transitions. [2021-06-05 14:50:52,349 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 9044 transitions. Word has length 48 [2021-06-05 14:50:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:52,349 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 9044 transitions. [2021-06-05 14:50:52,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 9044 transitions. [2021-06-05 14:50:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:52,352 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:52,352 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:52,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 14:50:52,352 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:52,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:52,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1838280150, now seen corresponding path program 31 times [2021-06-05 14:50:52,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:52,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242558798] [2021-06-05 14:50:52,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:52,401 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 14:50:52,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:52,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242558798] [2021-06-05 14:50:52,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242558798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:52,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:52,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:50:52,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113702871] [2021-06-05 14:50:52,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:50:52,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:52,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:50:52,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:52,402 INFO L87 Difference]: Start difference. First operand 3648 states and 9044 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:52,509 INFO L93 Difference]: Finished difference Result 4584 states and 11250 transitions. [2021-06-05 14:50:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:52,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:52,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:52,512 INFO L225 Difference]: With dead ends: 4584 [2021-06-05 14:50:52,512 INFO L226 Difference]: Without dead ends: 4534 [2021-06-05 14:50:52,513 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:52,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2021-06-05 14:50:52,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 3646. [2021-06-05 14:50:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 2.4790123456790125) internal successors, (9036), 3645 states have internal predecessors, (9036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 9036 transitions. [2021-06-05 14:50:52,557 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 9036 transitions. Word has length 48 [2021-06-05 14:50:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:52,557 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 9036 transitions. [2021-06-05 14:50:52,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 9036 transitions. [2021-06-05 14:50:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:52,560 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:52,560 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:52,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 14:50:52,560 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:52,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:52,561 INFO L82 PathProgramCache]: Analyzing trace with hash -163243666, now seen corresponding path program 32 times [2021-06-05 14:50:52,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:52,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249558945] [2021-06-05 14:50:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:52,607 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 14:50:52,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:52,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249558945] [2021-06-05 14:50:52,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249558945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:52,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:52,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:52,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512152293] [2021-06-05 14:50:52,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:52,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:52,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:52,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:52,609 INFO L87 Difference]: Start difference. First operand 3646 states and 9036 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:52,708 INFO L93 Difference]: Finished difference Result 4172 states and 10205 transitions. [2021-06-05 14:50:52,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 14:50:52,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:52,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:52,711 INFO L225 Difference]: With dead ends: 4172 [2021-06-05 14:50:52,711 INFO L226 Difference]: Without dead ends: 3835 [2021-06-05 14:50:52,711 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:50:52,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2021-06-05 14:50:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3521. [2021-06-05 14:50:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3521 states, 3520 states have (on average 2.4607954545454547) internal successors, (8662), 3520 states have internal predecessors, (8662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3521 states to 3521 states and 8662 transitions. [2021-06-05 14:50:52,750 INFO L78 Accepts]: Start accepts. Automaton has 3521 states and 8662 transitions. Word has length 48 [2021-06-05 14:50:52,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:52,750 INFO L482 AbstractCegarLoop]: Abstraction has 3521 states and 8662 transitions. [2021-06-05 14:50:52,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3521 states and 8662 transitions. [2021-06-05 14:50:52,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:52,752 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:52,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:52,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 14:50:52,753 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:52,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:52,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1076849684, now seen corresponding path program 33 times [2021-06-05 14:50:52,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:52,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776616739] [2021-06-05 14:50:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:50:52,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:52,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776616739] [2021-06-05 14:50:52,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776616739] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:52,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:52,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:50:52,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519598318] [2021-06-05 14:50:52,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:50:52,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:52,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:50:52,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:52,831 INFO L87 Difference]: Start difference. First operand 3521 states and 8662 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:52,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:52,998 INFO L93 Difference]: Finished difference Result 5134 states and 12499 transitions. [2021-06-05 14:50:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:52,998 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:52,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:53,002 INFO L225 Difference]: With dead ends: 5134 [2021-06-05 14:50:53,002 INFO L226 Difference]: Without dead ends: 4828 [2021-06-05 14:50:53,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:50:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2021-06-05 14:50:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 3954. [2021-06-05 14:50:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3954 states, 3953 states have (on average 2.437136352137617) internal successors, (9634), 3953 states have internal predecessors, (9634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 9634 transitions. [2021-06-05 14:50:53,048 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 9634 transitions. Word has length 48 [2021-06-05 14:50:53,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:53,048 INFO L482 AbstractCegarLoop]: Abstraction has 3954 states and 9634 transitions. [2021-06-05 14:50:53,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 9634 transitions. [2021-06-05 14:50:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:53,051 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:53,051 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:53,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 14:50:53,052 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:53,052 INFO L82 PathProgramCache]: Analyzing trace with hash 527044882, now seen corresponding path program 34 times [2021-06-05 14:50:53,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:53,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910626783] [2021-06-05 14:50:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:53,132 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 14:50:53,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:53,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910626783] [2021-06-05 14:50:53,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910626783] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:53,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:53,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:50:53,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638329426] [2021-06-05 14:50:53,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:50:53,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:53,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:50:53,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:53,133 INFO L87 Difference]: Start difference. First operand 3954 states and 9634 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:53,285 INFO L93 Difference]: Finished difference Result 4539 states and 10974 transitions. [2021-06-05 14:50:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:53,289 INFO L225 Difference]: With dead ends: 4539 [2021-06-05 14:50:53,289 INFO L226 Difference]: Without dead ends: 4187 [2021-06-05 14:50:53,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:50:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4187 states. [2021-06-05 14:50:53,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4187 to 3627. [2021-06-05 14:50:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3626 states have (on average 2.4332597904026474) internal successors, (8823), 3626 states have internal predecessors, (8823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 8823 transitions. [2021-06-05 14:50:53,340 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 8823 transitions. Word has length 48 [2021-06-05 14:50:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:53,340 INFO L482 AbstractCegarLoop]: Abstraction has 3627 states and 8823 transitions. [2021-06-05 14:50:53,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 8823 transitions. [2021-06-05 14:50:53,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:53,343 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:53,344 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:53,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 14:50:53,344 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:53,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1279163436, now seen corresponding path program 35 times [2021-06-05 14:50:53,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:53,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490075285] [2021-06-05 14:50:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:53,422 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 14:50:53,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:53,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490075285] [2021-06-05 14:50:53,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490075285] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:53,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:53,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:50:53,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594203712] [2021-06-05 14:50:53,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:50:53,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:53,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:50:53,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:53,423 INFO L87 Difference]: Start difference. First operand 3627 states and 8823 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:53,577 INFO L93 Difference]: Finished difference Result 4198 states and 10112 transitions. [2021-06-05 14:50:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:53,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:53,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:53,581 INFO L225 Difference]: With dead ends: 4198 [2021-06-05 14:50:53,581 INFO L226 Difference]: Without dead ends: 3945 [2021-06-05 14:50:53,581 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:50:53,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2021-06-05 14:50:53,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 3587. [2021-06-05 14:50:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3587 states, 3586 states have (on average 2.4121583937534856) internal successors, (8650), 3586 states have internal predecessors, (8650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 8650 transitions. [2021-06-05 14:50:53,622 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 8650 transitions. Word has length 48 [2021-06-05 14:50:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:53,622 INFO L482 AbstractCegarLoop]: Abstraction has 3587 states and 8650 transitions. [2021-06-05 14:50:53,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 8650 transitions. [2021-06-05 14:50:53,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:53,625 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:53,625 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:53,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 14:50:53,625 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:53,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1828968238, now seen corresponding path program 36 times [2021-06-05 14:50:53,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:53,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264360279] [2021-06-05 14:50:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:53,711 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 14:50:53,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:53,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264360279] [2021-06-05 14:50:53,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264360279] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:53,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:53,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 14:50:53,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259027612] [2021-06-05 14:50:53,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 14:50:53,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:53,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 14:50:53,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 14:50:53,712 INFO L87 Difference]: Start difference. First operand 3587 states and 8650 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:53,866 INFO L93 Difference]: Finished difference Result 3868 states and 9238 transitions. [2021-06-05 14:50:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:53,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:53,869 INFO L225 Difference]: With dead ends: 3868 [2021-06-05 14:50:53,869 INFO L226 Difference]: Without dead ends: 3069 [2021-06-05 14:50:53,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-05 14:50:53,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-06-05 14:50:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2756. [2021-06-05 14:50:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2755 states have (on average 2.3731397459165153) internal successors, (6538), 2755 states have internal predecessors, (6538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 6538 transitions. [2021-06-05 14:50:53,899 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 6538 transitions. Word has length 48 [2021-06-05 14:50:53,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:53,899 INFO L482 AbstractCegarLoop]: Abstraction has 2756 states and 6538 transitions. [2021-06-05 14:50:53,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 6538 transitions. [2021-06-05 14:50:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:53,901 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:53,901 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:53,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 14:50:53,901 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:53,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:53,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1684872736, now seen corresponding path program 37 times [2021-06-05 14:50:53,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:53,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282149946] [2021-06-05 14:50:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:54,002 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 14:50:54,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:54,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282149946] [2021-06-05 14:50:54,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282149946] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:54,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:54,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-05 14:50:54,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275904631] [2021-06-05 14:50:54,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 14:50:54,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:54,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 14:50:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-06-05 14:50:54,003 INFO L87 Difference]: Start difference. First operand 2756 states and 6538 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:54,292 INFO L93 Difference]: Finished difference Result 3824 states and 8912 transitions. [2021-06-05 14:50:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 14:50:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:54,295 INFO L225 Difference]: With dead ends: 3824 [2021-06-05 14:50:54,295 INFO L226 Difference]: Without dead ends: 3670 [2021-06-05 14:50:54,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 169.2ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-05 14:50:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-06-05 14:50:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 2683. [2021-06-05 14:50:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2682 states have (on average 2.3732289336316184) internal successors, (6365), 2682 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 6365 transitions. [2021-06-05 14:50:54,326 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 6365 transitions. Word has length 48 [2021-06-05 14:50:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:54,326 INFO L482 AbstractCegarLoop]: Abstraction has 2683 states and 6365 transitions. [2021-06-05 14:50:54,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 6365 transitions. [2021-06-05 14:50:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:54,328 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:54,329 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:54,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 14:50:54,329 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:54,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:54,329 INFO L82 PathProgramCache]: Analyzing trace with hash -567074070, now seen corresponding path program 38 times [2021-06-05 14:50:54,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:54,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459158747] [2021-06-05 14:50:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:54,428 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 14:50:54,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:54,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459158747] [2021-06-05 14:50:54,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459158747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:54,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:54,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-05 14:50:54,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384725308] [2021-06-05 14:50:54,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 14:50:54,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:54,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 14:50:54,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 14:50:54,430 INFO L87 Difference]: Start difference. First operand 2683 states and 6365 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:54,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:54,659 INFO L93 Difference]: Finished difference Result 3008 states and 7066 transitions. [2021-06-05 14:50:54,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 14:50:54,659 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:54,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:54,662 INFO L225 Difference]: With dead ends: 3008 [2021-06-05 14:50:54,662 INFO L226 Difference]: Without dead ends: 2882 [2021-06-05 14:50:54,662 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:50:54,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2021-06-05 14:50:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2536. [2021-06-05 14:50:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2535 states have (on average 2.3846153846153846) internal successors, (6045), 2535 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:54,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 6045 transitions. [2021-06-05 14:50:54,689 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 6045 transitions. Word has length 48 [2021-06-05 14:50:54,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:54,689 INFO L482 AbstractCegarLoop]: Abstraction has 2536 states and 6045 transitions. [2021-06-05 14:50:54,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:54,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 6045 transitions. [2021-06-05 14:50:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:54,691 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:54,691 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:54,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 14:50:54,691 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:54,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1527737234, now seen corresponding path program 39 times [2021-06-05 14:50:54,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:54,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524798194] [2021-06-05 14:50:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:54,745 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 14:50:54,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:54,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524798194] [2021-06-05 14:50:54,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524798194] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:54,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:54,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 14:50:54,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639872612] [2021-06-05 14:50:54,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 14:50:54,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:54,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 14:50:54,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:54,746 INFO L87 Difference]: Start difference. First operand 2536 states and 6045 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:54,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:54,852 INFO L93 Difference]: Finished difference Result 2784 states and 6562 transitions. [2021-06-05 14:50:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 14:50:54,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:54,854 INFO L225 Difference]: With dead ends: 2784 [2021-06-05 14:50:54,854 INFO L226 Difference]: Without dead ends: 2272 [2021-06-05 14:50:54,854 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 14:50:54,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2021-06-05 14:50:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 1997. [2021-06-05 14:50:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1996 states have (on average 2.3456913827655312) internal successors, (4682), 1996 states have internal predecessors, (4682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 4682 transitions. [2021-06-05 14:50:54,875 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 4682 transitions. Word has length 48 [2021-06-05 14:50:54,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:54,875 INFO L482 AbstractCegarLoop]: Abstraction has 1997 states and 4682 transitions. [2021-06-05 14:50:54,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 4682 transitions. [2021-06-05 14:50:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:54,877 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:54,877 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:54,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 14:50:54,877 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:54,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:54,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1742602862, now seen corresponding path program 40 times [2021-06-05 14:50:54,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:54,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945438464] [2021-06-05 14:50:54,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:54,924 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 14:50:54,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:54,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945438464] [2021-06-05 14:50:54,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945438464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:54,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:54,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:50:54,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822753837] [2021-06-05 14:50:54,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:50:54,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:54,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:50:54,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:50:54,925 INFO L87 Difference]: Start difference. First operand 1997 states and 4682 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:55,038 INFO L93 Difference]: Finished difference Result 1924 states and 4439 transitions. [2021-06-05 14:50:55,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:55,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:55,039 INFO L225 Difference]: With dead ends: 1924 [2021-06-05 14:50:55,039 INFO L226 Difference]: Without dead ends: 1708 [2021-06-05 14:50:55,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-06-05 14:50:55,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1708. [2021-06-05 14:50:55,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1707 states have (on average 2.3134153485647335) internal successors, (3949), 1707 states have internal predecessors, (3949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 3949 transitions. [2021-06-05 14:50:55,056 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 3949 transitions. Word has length 48 [2021-06-05 14:50:55,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:55,056 INFO L482 AbstractCegarLoop]: Abstraction has 1708 states and 3949 transitions. [2021-06-05 14:50:55,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 3949 transitions. [2021-06-05 14:50:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:55,057 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:55,057 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:55,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 14:50:55,057 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:55,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:55,058 INFO L82 PathProgramCache]: Analyzing trace with hash 668037194, now seen corresponding path program 41 times [2021-06-05 14:50:55,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:55,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947027688] [2021-06-05 14:50:55,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:55,105 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 14:50:55,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:55,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947027688] [2021-06-05 14:50:55,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947027688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:55,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:55,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:50:55,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500986337] [2021-06-05 14:50:55,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:50:55,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:55,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:50:55,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:50:55,106 INFO L87 Difference]: Start difference. First operand 1708 states and 3949 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:55,180 INFO L93 Difference]: Finished difference Result 2079 states and 4726 transitions. [2021-06-05 14:50:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 14:50:55,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:55,181 INFO L225 Difference]: With dead ends: 2079 [2021-06-05 14:50:55,181 INFO L226 Difference]: Without dead ends: 1763 [2021-06-05 14:50:55,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:50:55,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-06-05 14:50:55,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1561. [2021-06-05 14:50:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 2.2788461538461537) internal successors, (3555), 1560 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 3555 transitions. [2021-06-05 14:50:55,206 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 3555 transitions. Word has length 48 [2021-06-05 14:50:55,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:55,206 INFO L482 AbstractCegarLoop]: Abstraction has 1561 states and 3555 transitions. [2021-06-05 14:50:55,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 3555 transitions. [2021-06-05 14:50:55,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:55,207 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:55,207 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:55,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 14:50:55,207 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:55,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:55,208 INFO L82 PathProgramCache]: Analyzing trace with hash -543361422, now seen corresponding path program 42 times [2021-06-05 14:50:55,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:55,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950903201] [2021-06-05 14:50:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:55,253 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 14:50:55,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:55,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950903201] [2021-06-05 14:50:55,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950903201] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:55,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:55,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:50:55,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739879175] [2021-06-05 14:50:55,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:50:55,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:55,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:50:55,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:55,254 INFO L87 Difference]: Start difference. First operand 1561 states and 3555 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:55,336 INFO L93 Difference]: Finished difference Result 1567 states and 3496 transitions. [2021-06-05 14:50:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:50:55,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:55,337 INFO L225 Difference]: With dead ends: 1567 [2021-06-05 14:50:55,337 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 14:50:55,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-05 14:50:55,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 14:50:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2021-06-05 14:50:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 2.2234375) internal successors, (2846), 1280 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 2846 transitions. [2021-06-05 14:50:55,349 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 2846 transitions. Word has length 48 [2021-06-05 14:50:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:55,349 INFO L482 AbstractCegarLoop]: Abstraction has 1281 states and 2846 transitions. [2021-06-05 14:50:55,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 2846 transitions. [2021-06-05 14:50:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:55,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:55,350 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:55,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 14:50:55,350 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:55,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:55,350 INFO L82 PathProgramCache]: Analyzing trace with hash 630703062, now seen corresponding path program 43 times [2021-06-05 14:50:55,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:55,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309221281] [2021-06-05 14:50:55,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:55,379 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 14:50:55,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:55,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309221281] [2021-06-05 14:50:55,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309221281] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:55,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:55,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 14:50:55,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000776054] [2021-06-05 14:50:55,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 14:50:55,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:55,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 14:50:55,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:50:55,380 INFO L87 Difference]: Start difference. First operand 1281 states and 2846 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:55,431 INFO L93 Difference]: Finished difference Result 996 states and 2169 transitions. [2021-06-05 14:50:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 14:50:55,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:55,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:55,431 INFO L225 Difference]: With dead ends: 996 [2021-06-05 14:50:55,431 INFO L226 Difference]: Without dead ends: 423 [2021-06-05 14:50:55,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-06-05 14:50:55,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 363. [2021-06-05 14:50:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.1270718232044197) internal successors, (770), 362 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 770 transitions. [2021-06-05 14:50:55,435 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 770 transitions. Word has length 48 [2021-06-05 14:50:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:55,436 INFO L482 AbstractCegarLoop]: Abstraction has 363 states and 770 transitions. [2021-06-05 14:50:55,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 770 transitions. [2021-06-05 14:50:55,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 14:50:55,436 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:50:55,436 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:50:55,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 14:50:55,437 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:50:55,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:50:55,437 INFO L82 PathProgramCache]: Analyzing trace with hash -301103428, now seen corresponding path program 44 times [2021-06-05 14:50:55,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:50:55,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324034569] [2021-06-05 14:50:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:50:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:50:55,499 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 14:50:55,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:50:55,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324034569] [2021-06-05 14:50:55,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324034569] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:50:55,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:50:55,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 14:50:55,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12460358] [2021-06-05 14:50:55,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 14:50:55,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:50:55,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 14:50:55,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 14:50:55,500 INFO L87 Difference]: Start difference. First operand 363 states and 770 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:50:55,591 INFO L93 Difference]: Finished difference Result 343 states and 732 transitions. [2021-06-05 14:50:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 14:50:55,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-06-05 14:50:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:50:55,592 INFO L225 Difference]: With dead ends: 343 [2021-06-05 14:50:55,592 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 14:50:55,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 14:50:55,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 14:50:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 14:50:55,592 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 14:50:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 14:50:55,592 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-05 14:50:55,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:50:55,592 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 14:50:55,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:50:55,593 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 14:50:55,593 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 14:50:55,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 14:50:55,594 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 14:50:55,596 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 02:50:55 BasicIcfg [2021-06-05 14:50:55,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 14:50:55,597 INFO L168 Benchmark]: Toolchain (without parser) took 15879.89 ms. Allocated memory was 369.1 MB in the beginning and 929.0 MB in the end (delta: 559.9 MB). Free memory was 348.1 MB in the beginning and 768.4 MB in the end (delta: -420.3 MB). Peak memory consumption was 140.2 MB. Max. memory is 16.0 GB. [2021-06-05 14:50:55,597 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 369.1 MB. Free memory is still 349.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 14:50:55,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.64 ms. Allocated memory is still 369.1 MB. Free memory was 348.0 MB in the beginning and 346.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 14:50:55,597 INFO L168 Benchmark]: Boogie Preprocessor took 19.29 ms. Allocated memory is still 369.1 MB. Free memory was 346.6 MB in the beginning and 345.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 14:50:55,597 INFO L168 Benchmark]: RCFGBuilder took 184.16 ms. Allocated memory is still 369.1 MB. Free memory was 345.5 MB in the beginning and 331.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-05 14:50:55,597 INFO L168 Benchmark]: TraceAbstraction took 15652.23 ms. Allocated memory was 369.1 MB in the beginning and 929.0 MB in the end (delta: 559.9 MB). Free memory was 331.0 MB in the beginning and 768.4 MB in the end (delta: -437.4 MB). Peak memory consumption was 123.4 MB. Max. memory is 16.0 GB. [2021-06-05 14:50:55,597 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 0.10 ms. Allocated memory is still 369.1 MB. Free memory is still 349.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.64 ms. Allocated memory is still 369.1 MB. Free memory was 348.0 MB in the beginning and 346.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.29 ms. Allocated memory is still 369.1 MB. Free memory was 346.6 MB in the beginning and 345.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 184.16 ms. Allocated memory is still 369.1 MB. Free memory was 345.5 MB in the beginning and 331.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 15652.23 ms. Allocated memory was 369.1 MB in the beginning and 929.0 MB in the end (delta: 559.9 MB). Free memory was 331.0 MB in the beginning and 768.4 MB in the end (delta: -437.4 MB). Peak memory consumption was 123.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: 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, 99 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15542.0ms, OverallIterations: 44, TraceHistogramMax: 1, EmptinessCheckTime: 219.8ms, AutomataDifference: 8436.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 120.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4543 SDtfs, 8036 SDslu, 18000 SDs, 0 SdLazy, 10928 SolverSat, 1866 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4397.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 68 SyntacticMatches, 28 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 3866.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6383occurred in iteration=15, InterpolantAutomatonStates: 466, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2960.4ms AutomataMinimizationTime, 44 MinimizatonAttempts, 50804 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 39.0ms SsaConstructionTime, 271.4ms SatisfiabilityAnalysisTime, 3267.7ms InterpolantComputationTime, 2112 NumberOfCodeBlocks, 2112 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 2068 ConstructedInterpolants, 0 QuantifiedInterpolants, 12895 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 44 InterpolantComputations, 44 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...