/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 05:02:34,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 05:02:34,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 05:02:34,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 05:02:34,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 05:02:34,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 05:02:34,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 05:02:34,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 05:02:34,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 05:02:34,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 05:02:34,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 05:02:34,959 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 05:02:34,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 05:02:34,959 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 05:02:34,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 05:02:34,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 05:02:34,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 05:02:34,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 05:02:34,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 05:02:34,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 05:02:34,960 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 05:02:34,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 05:02:34,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 05:02:34,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 05:02:34,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 05:02:34,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 05:02:34,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 05:02:35,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 05:02:35,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 05:02:35,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 05:02:35,226 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 05:02:35,226 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 05:02:35,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-06-05 05:02:35,227 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-06-05 05:02:35,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 05:02:35,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 05:02:35,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 05:02:35,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 05:02:35,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 05:02:35,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/1) ... [2021-06-05 05:02:35,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/1) ... [2021-06-05 05:02:35,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 05:02:35,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 05:02:35,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 05:02:35,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 05:02:35,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/1) ... [2021-06-05 05:02:35,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/1) ... [2021-06-05 05:02:35,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/1) ... [2021-06-05 05:02:35,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/1) ... [2021-06-05 05:02:35,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/1) ... [2021-06-05 05:02:35,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/1) ... [2021-06-05 05:02:35,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/1) ... [2021-06-05 05:02:35,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 05:02:35,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 05:02:35,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 05:02:35,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 05:02:35,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 05:02:35,337 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 05:02:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 05:02:35,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 05:02:35,337 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 05:02:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 05:02:35,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 05:02:35,338 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 05:02:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 05:02:35,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 05:02:35,338 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 05:02:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 05:02:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 05:02:35,339 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 05:02:35,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 05:02:35,478 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 05:02:35,479 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:02:35 BoogieIcfgContainer [2021-06-05 05:02:35,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 05:02:35,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 05:02:35,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 05:02:35,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 05:02:35,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:02:35" (1/2) ... [2021-06-05 05:02:35,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b075da3 and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 05:02:35, skipping insertion in model container [2021-06-05 05:02:35,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:02:35" (2/2) ... [2021-06-05 05:02:35,484 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-06-05 05:02:35,487 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 05:02:35,487 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 05:02:35,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 05:02:35,488 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 05:02:35,513 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 05:02:35,526 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 05:02:35,548 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 05:02:35,549 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 05:02:35,549 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 05:02:35,549 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 05:02:35,549 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 05:02:35,549 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 05:02:35,549 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 05:02:35,549 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 05:02:35,555 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 41 transitions, 106 flow [2021-06-05 05:02:35,633 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:35,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:35,649 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:35,649 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:35,649 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash 974063972, now seen corresponding path program 1 times [2021-06-05 05:02:35,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:35,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884010878] [2021-06-05 05:02:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:35,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:35,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884010878] [2021-06-05 05:02:35,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884010878] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:35,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:35,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:35,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488528569] [2021-06-05 05:02:35,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:35,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:35,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:35,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:35,808 INFO L87 Difference]: Start difference. First operand has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:36,000 INFO L93 Difference]: Finished difference Result 998 states and 2445 transitions. [2021-06-05 05:02:36,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:02:36,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:36,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:36,020 INFO L225 Difference]: With dead ends: 998 [2021-06-05 05:02:36,021 INFO L226 Difference]: Without dead ends: 923 [2021-06-05 05:02:36,022 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:02:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-06-05 05:02:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 687. [2021-06-05 05:02:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.564139941690962) internal successors, (1759), 686 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1759 transitions. [2021-06-05 05:02:36,099 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1759 transitions. Word has length 36 [2021-06-05 05:02:36,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:36,100 INFO L482 AbstractCegarLoop]: Abstraction has 687 states and 1759 transitions. [2021-06-05 05:02:36,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1759 transitions. [2021-06-05 05:02:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:36,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:36,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:36,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 05:02:36,103 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:36,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1374757314, now seen corresponding path program 2 times [2021-06-05 05:02:36,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:36,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782091248] [2021-06-05 05:02:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:36,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:36,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:36,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782091248] [2021-06-05 05:02:36,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782091248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:36,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:36,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:02:36,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864290162] [2021-06-05 05:02:36,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:36,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:36,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:36,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:36,220 INFO L87 Difference]: Start difference. First operand 687 states and 1759 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:36,311 INFO L93 Difference]: Finished difference Result 1384 states and 3517 transitions. [2021-06-05 05:02:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:02:36,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:36,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:36,315 INFO L225 Difference]: With dead ends: 1384 [2021-06-05 05:02:36,316 INFO L226 Difference]: Without dead ends: 1324 [2021-06-05 05:02:36,316 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 64.6ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-06-05 05:02:36,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-06-05 05:02:36,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 755. [2021-06-05 05:02:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 2.5450928381962865) internal successors, (1919), 754 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1919 transitions. [2021-06-05 05:02:36,337 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1919 transitions. Word has length 36 [2021-06-05 05:02:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:36,338 INFO L482 AbstractCegarLoop]: Abstraction has 755 states and 1919 transitions. [2021-06-05 05:02:36,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1919 transitions. [2021-06-05 05:02:36,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:36,340 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:36,340 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:36,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 05:02:36,340 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1141840352, now seen corresponding path program 3 times [2021-06-05 05:02:36,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:36,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254104717] [2021-06-05 05:02:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:36,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:36,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254104717] [2021-06-05 05:02:36,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254104717] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:36,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:36,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 05:02:36,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791104030] [2021-06-05 05:02:36,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 05:02:36,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:36,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 05:02:36,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 05:02:36,380 INFO L87 Difference]: Start difference. First operand 755 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:36,387 INFO L93 Difference]: Finished difference Result 711 states and 1782 transitions. [2021-06-05 05:02:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 05:02:36,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:36,390 INFO L225 Difference]: With dead ends: 711 [2021-06-05 05:02:36,392 INFO L226 Difference]: Without dead ends: 711 [2021-06-05 05:02:36,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 05:02:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-06-05 05:02:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2021-06-05 05:02:36,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 2.5098591549295777) internal successors, (1782), 710 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1782 transitions. [2021-06-05 05:02:36,409 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1782 transitions. Word has length 36 [2021-06-05 05:02:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:36,409 INFO L482 AbstractCegarLoop]: Abstraction has 711 states and 1782 transitions. [2021-06-05 05:02:36,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1782 transitions. [2021-06-05 05:02:36,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:36,412 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:36,412 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:36,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 05:02:36,412 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:36,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:36,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1806691788, now seen corresponding path program 4 times [2021-06-05 05:02:36,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:36,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720321951] [2021-06-05 05:02:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:36,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:36,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720321951] [2021-06-05 05:02:36,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720321951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:36,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:36,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:36,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744262750] [2021-06-05 05:02:36,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:36,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:36,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:36,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:36,474 INFO L87 Difference]: Start difference. First operand 711 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:36,613 INFO L93 Difference]: Finished difference Result 1037 states and 2486 transitions. [2021-06-05 05:02:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:02:36,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:36,617 INFO L225 Difference]: With dead ends: 1037 [2021-06-05 05:02:36,617 INFO L226 Difference]: Without dead ends: 946 [2021-06-05 05:02:36,618 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:02:36,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-06-05 05:02:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 725. [2021-06-05 05:02:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 2.4903314917127073) internal successors, (1803), 724 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1803 transitions. [2021-06-05 05:02:36,637 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1803 transitions. Word has length 36 [2021-06-05 05:02:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:36,638 INFO L482 AbstractCegarLoop]: Abstraction has 725 states and 1803 transitions. [2021-06-05 05:02:36,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1803 transitions. [2021-06-05 05:02:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:36,640 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:36,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:36,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 05:02:36,640 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:36,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1002048854, now seen corresponding path program 5 times [2021-06-05 05:02:36,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:36,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031098181] [2021-06-05 05:02:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:36,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:36,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031098181] [2021-06-05 05:02:36,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031098181] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:36,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:36,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:02:36,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107871255] [2021-06-05 05:02:36,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:02:36,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:36,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:02:36,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:02:36,737 INFO L87 Difference]: Start difference. First operand 725 states and 1803 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:36,846 INFO L93 Difference]: Finished difference Result 1727 states and 4287 transitions. [2021-06-05 05:02:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:36,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:36,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:36,851 INFO L225 Difference]: With dead ends: 1727 [2021-06-05 05:02:36,851 INFO L226 Difference]: Without dead ends: 1715 [2021-06-05 05:02:36,852 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2021-06-05 05:02:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 819. [2021-06-05 05:02:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.488997555012225) internal successors, (2036), 818 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2036 transitions. [2021-06-05 05:02:36,872 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2036 transitions. Word has length 36 [2021-06-05 05:02:36,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:36,872 INFO L482 AbstractCegarLoop]: Abstraction has 819 states and 2036 transitions. [2021-06-05 05:02:36,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2036 transitions. [2021-06-05 05:02:36,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:36,874 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:36,874 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:36,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 05:02:36,874 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:36,874 INFO L82 PathProgramCache]: Analyzing trace with hash -2018104662, now seen corresponding path program 6 times [2021-06-05 05:02:36,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:36,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718659593] [2021-06-05 05:02:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:36,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:36,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718659593] [2021-06-05 05:02:36,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718659593] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:36,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:36,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:02:36,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003616455] [2021-06-05 05:02:36,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:02:36,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:36,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:02:36,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:02:36,946 INFO L87 Difference]: Start difference. First operand 819 states and 2036 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:37,050 INFO L93 Difference]: Finished difference Result 1666 states and 4109 transitions. [2021-06-05 05:02:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:37,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:37,054 INFO L225 Difference]: With dead ends: 1666 [2021-06-05 05:02:37,054 INFO L226 Difference]: Without dead ends: 1638 [2021-06-05 05:02:37,055 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-06-05 05:02:37,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 799. [2021-06-05 05:02:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 2.4862155388471177) internal successors, (1984), 798 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1984 transitions. [2021-06-05 05:02:37,083 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1984 transitions. Word has length 36 [2021-06-05 05:02:37,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:37,084 INFO L482 AbstractCegarLoop]: Abstraction has 799 states and 1984 transitions. [2021-06-05 05:02:37,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1984 transitions. [2021-06-05 05:02:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:37,085 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:37,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:37,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 05:02:37,085 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:37,086 INFO L82 PathProgramCache]: Analyzing trace with hash 888977548, now seen corresponding path program 7 times [2021-06-05 05:02:37,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:37,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350856984] [2021-06-05 05:02:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:37,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:37,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350856984] [2021-06-05 05:02:37,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350856984] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:37,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:37,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:02:37,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351762170] [2021-06-05 05:02:37,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:02:37,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:37,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:02:37,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:02:37,174 INFO L87 Difference]: Start difference. First operand 799 states and 1984 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:37,282 INFO L93 Difference]: Finished difference Result 1712 states and 4234 transitions. [2021-06-05 05:02:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:37,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:37,287 INFO L225 Difference]: With dead ends: 1712 [2021-06-05 05:02:37,287 INFO L226 Difference]: Without dead ends: 1700 [2021-06-05 05:02:37,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:37,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2021-06-05 05:02:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 854. [2021-06-05 05:02:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.4935521688159437) internal successors, (2127), 853 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2127 transitions. [2021-06-05 05:02:37,321 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2127 transitions. Word has length 36 [2021-06-05 05:02:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:37,321 INFO L482 AbstractCegarLoop]: Abstraction has 854 states and 2127 transitions. [2021-06-05 05:02:37,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2127 transitions. [2021-06-05 05:02:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:37,323 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:37,323 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:37,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 05:02:37,323 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:37,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:37,323 INFO L82 PathProgramCache]: Analyzing trace with hash -127078260, now seen corresponding path program 8 times [2021-06-05 05:02:37,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:37,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933014562] [2021-06-05 05:02:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:37,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:37,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933014562] [2021-06-05 05:02:37,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933014562] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:37,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:37,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:02:37,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777012186] [2021-06-05 05:02:37,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:02:37,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:37,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:02:37,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:02:37,385 INFO L87 Difference]: Start difference. First operand 854 states and 2127 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:37,503 INFO L93 Difference]: Finished difference Result 1651 states and 4056 transitions. [2021-06-05 05:02:37,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:37,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:37,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:37,508 INFO L225 Difference]: With dead ends: 1651 [2021-06-05 05:02:37,508 INFO L226 Difference]: Without dead ends: 1627 [2021-06-05 05:02:37,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 84.4ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:37,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-06-05 05:02:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 814. [2021-06-05 05:02:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 2.4846248462484626) internal successors, (2020), 813 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 2020 transitions. [2021-06-05 05:02:37,525 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 2020 transitions. Word has length 36 [2021-06-05 05:02:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:37,525 INFO L482 AbstractCegarLoop]: Abstraction has 814 states and 2020 transitions. [2021-06-05 05:02:37,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 2020 transitions. [2021-06-05 05:02:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:37,526 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:37,526 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] [2021-06-05 05:02:37,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 05:02:37,527 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:37,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:37,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1614595956, now seen corresponding path program 9 times [2021-06-05 05:02:37,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:37,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135149775] [2021-06-05 05:02:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:37,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:37,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135149775] [2021-06-05 05:02:37,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135149775] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:37,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:37,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 05:02:37,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783312518] [2021-06-05 05:02:37,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 05:02:37,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:37,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 05:02:37,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 05:02:37,538 INFO L87 Difference]: Start difference. First operand 814 states and 2020 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:37,543 INFO L93 Difference]: Finished difference Result 790 states and 1933 transitions. [2021-06-05 05:02:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 05:02:37,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:37,545 INFO L225 Difference]: With dead ends: 790 [2021-06-05 05:02:37,545 INFO L226 Difference]: Without dead ends: 780 [2021-06-05 05:02:37,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 05:02:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-06-05 05:02:37,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2021-06-05 05:02:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.453145057766367) internal successors, (1911), 779 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1911 transitions. [2021-06-05 05:02:37,557 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1911 transitions. Word has length 36 [2021-06-05 05:02:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:37,557 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 1911 transitions. [2021-06-05 05:02:37,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,558 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1911 transitions. [2021-06-05 05:02:37,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:37,559 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:37,559 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:37,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 05:02:37,559 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:37,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1296551418, now seen corresponding path program 10 times [2021-06-05 05:02:37,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:37,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965575142] [2021-06-05 05:02:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:37,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:37,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965575142] [2021-06-05 05:02:37,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965575142] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:37,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:37,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:37,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539086559] [2021-06-05 05:02:37,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:37,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:37,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:37,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:37,590 INFO L87 Difference]: Start difference. First operand 780 states and 1911 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:37,719 INFO L93 Difference]: Finished difference Result 1251 states and 2962 transitions. [2021-06-05 05:02:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:02:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:37,722 INFO L225 Difference]: With dead ends: 1251 [2021-06-05 05:02:37,722 INFO L226 Difference]: Without dead ends: 1065 [2021-06-05 05:02:37,723 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-06-05 05:02:37,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 851. [2021-06-05 05:02:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 2.408235294117647) internal successors, (2047), 850 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2047 transitions. [2021-06-05 05:02:37,736 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 2047 transitions. Word has length 36 [2021-06-05 05:02:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:37,736 INFO L482 AbstractCegarLoop]: Abstraction has 851 states and 2047 transitions. [2021-06-05 05:02:37,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 2047 transitions. [2021-06-05 05:02:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:37,737 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:37,737 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:37,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 05:02:37,737 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:37,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:37,738 INFO L82 PathProgramCache]: Analyzing trace with hash 846284964, now seen corresponding path program 11 times [2021-06-05 05:02:37,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:37,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478894215] [2021-06-05 05:02:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:37,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:37,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478894215] [2021-06-05 05:02:37,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478894215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:37,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:37,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:37,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060297638] [2021-06-05 05:02:37,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:37,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:37,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:37,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:37,763 INFO L87 Difference]: Start difference. First operand 851 states and 2047 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:37,869 INFO L93 Difference]: Finished difference Result 1179 states and 2770 transitions. [2021-06-05 05:02:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:02:37,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:37,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:37,873 INFO L225 Difference]: With dead ends: 1179 [2021-06-05 05:02:37,873 INFO L226 Difference]: Without dead ends: 1051 [2021-06-05 05:02:37,873 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-06-05 05:02:37,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 845. [2021-06-05 05:02:37,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.4004739336492893) internal successors, (2026), 844 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2026 transitions. [2021-06-05 05:02:37,887 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2026 transitions. Word has length 36 [2021-06-05 05:02:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:37,887 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2026 transitions. [2021-06-05 05:02:37,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2026 transitions. [2021-06-05 05:02:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:37,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:37,888 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:37,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 05:02:37,888 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:37,889 INFO L82 PathProgramCache]: Analyzing trace with hash -911699450, now seen corresponding path program 12 times [2021-06-05 05:02:37,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:37,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133617610] [2021-06-05 05:02:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:37,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:37,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133617610] [2021-06-05 05:02:37,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133617610] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:37,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:37,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:37,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280976798] [2021-06-05 05:02:37,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:37,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:37,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:37,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:37,938 INFO L87 Difference]: Start difference. First operand 845 states and 2026 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:38,043 INFO L93 Difference]: Finished difference Result 1124 states and 2638 transitions. [2021-06-05 05:02:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:02:38,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:38,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:38,045 INFO L225 Difference]: With dead ends: 1124 [2021-06-05 05:02:38,045 INFO L226 Difference]: Without dead ends: 934 [2021-06-05 05:02:38,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 52.7ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:02:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-06-05 05:02:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 760. [2021-06-05 05:02:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 2.399209486166008) internal successors, (1821), 759 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1821 transitions. [2021-06-05 05:02:38,065 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1821 transitions. Word has length 36 [2021-06-05 05:02:38,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:38,065 INFO L482 AbstractCegarLoop]: Abstraction has 760 states and 1821 transitions. [2021-06-05 05:02:38,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,065 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1821 transitions. [2021-06-05 05:02:38,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:38,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:38,066 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:38,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 05:02:38,067 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:38,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:38,067 INFO L82 PathProgramCache]: Analyzing trace with hash -886716842, now seen corresponding path program 13 times [2021-06-05 05:02:38,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:38,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579647117] [2021-06-05 05:02:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:38,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:38,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:38,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579647117] [2021-06-05 05:02:38,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579647117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:38,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:38,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:38,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913236458] [2021-06-05 05:02:38,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:38,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:38,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:38,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:38,096 INFO L87 Difference]: Start difference. First operand 760 states and 1821 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:38,215 INFO L93 Difference]: Finished difference Result 1116 states and 2583 transitions. [2021-06-05 05:02:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:02:38,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:38,218 INFO L225 Difference]: With dead ends: 1116 [2021-06-05 05:02:38,218 INFO L226 Difference]: Without dead ends: 1017 [2021-06-05 05:02:38,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:38,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-06-05 05:02:38,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 769. [2021-06-05 05:02:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 2.40234375) internal successors, (1845), 768 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1845 transitions. [2021-06-05 05:02:38,231 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1845 transitions. Word has length 36 [2021-06-05 05:02:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:38,231 INFO L482 AbstractCegarLoop]: Abstraction has 769 states and 1845 transitions. [2021-06-05 05:02:38,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1845 transitions. [2021-06-05 05:02:38,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:38,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:38,233 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:38,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 05:02:38,233 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:38,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1290670540, now seen corresponding path program 14 times [2021-06-05 05:02:38,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:38,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624326267] [2021-06-05 05:02:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:38,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:38,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624326267] [2021-06-05 05:02:38,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624326267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:38,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:38,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:38,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169002164] [2021-06-05 05:02:38,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:38,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:38,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:38,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:38,269 INFO L87 Difference]: Start difference. First operand 769 states and 1845 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:38,373 INFO L93 Difference]: Finished difference Result 1108 states and 2570 transitions. [2021-06-05 05:02:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:02:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:38,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:38,376 INFO L225 Difference]: With dead ends: 1108 [2021-06-05 05:02:38,377 INFO L226 Difference]: Without dead ends: 994 [2021-06-05 05:02:38,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-06-05 05:02:38,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 826. [2021-06-05 05:02:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.353939393939394) internal successors, (1942), 825 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1942 transitions. [2021-06-05 05:02:38,390 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1942 transitions. Word has length 36 [2021-06-05 05:02:38,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:38,391 INFO L482 AbstractCegarLoop]: Abstraction has 826 states and 1942 transitions. [2021-06-05 05:02:38,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1942 transitions. [2021-06-05 05:02:38,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:38,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:38,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:38,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 05:02:38,392 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:38,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:38,393 INFO L82 PathProgramCache]: Analyzing trace with hash 43920790, now seen corresponding path program 15 times [2021-06-05 05:02:38,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:38,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912502727] [2021-06-05 05:02:38,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:38,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:38,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912502727] [2021-06-05 05:02:38,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912502727] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:38,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:38,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:38,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325989874] [2021-06-05 05:02:38,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:38,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:38,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:38,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:38,417 INFO L87 Difference]: Start difference. First operand 826 states and 1942 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:38,489 INFO L93 Difference]: Finished difference Result 1089 states and 2514 transitions. [2021-06-05 05:02:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:02:38,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:38,492 INFO L225 Difference]: With dead ends: 1089 [2021-06-05 05:02:38,492 INFO L226 Difference]: Without dead ends: 918 [2021-06-05 05:02:38,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 05:02:38,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-06-05 05:02:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 751. [2021-06-05 05:02:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 2.3613333333333335) internal successors, (1771), 750 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1771 transitions. [2021-06-05 05:02:38,502 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1771 transitions. Word has length 36 [2021-06-05 05:02:38,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:38,503 INFO L482 AbstractCegarLoop]: Abstraction has 751 states and 1771 transitions. [2021-06-05 05:02:38,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1771 transitions. [2021-06-05 05:02:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:38,504 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:38,504 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:38,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 05:02:38,504 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:38,504 INFO L82 PathProgramCache]: Analyzing trace with hash 658153170, now seen corresponding path program 16 times [2021-06-05 05:02:38,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:38,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870727441] [2021-06-05 05:02:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:38,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:38,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870727441] [2021-06-05 05:02:38,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870727441] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:38,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:38,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:02:38,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989198488] [2021-06-05 05:02:38,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:02:38,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:38,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:02:38,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:02:38,531 INFO L87 Difference]: Start difference. First operand 751 states and 1771 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:38,639 INFO L93 Difference]: Finished difference Result 984 states and 2257 transitions. [2021-06-05 05:02:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:02:38,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:38,642 INFO L225 Difference]: With dead ends: 984 [2021-06-05 05:02:38,642 INFO L226 Difference]: Without dead ends: 893 [2021-06-05 05:02:38,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 55.0ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:02:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-06-05 05:02:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 687. [2021-06-05 05:02:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.3658892128279883) internal successors, (1623), 686 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1623 transitions. [2021-06-05 05:02:38,652 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1623 transitions. Word has length 36 [2021-06-05 05:02:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:38,652 INFO L482 AbstractCegarLoop]: Abstraction has 687 states and 1623 transitions. [2021-06-05 05:02:38,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1623 transitions. [2021-06-05 05:02:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:38,653 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:38,653 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:38,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 05:02:38,653 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:38,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1493977744, now seen corresponding path program 17 times [2021-06-05 05:02:38,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:38,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343797934] [2021-06-05 05:02:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:38,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:38,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343797934] [2021-06-05 05:02:38,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343797934] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:38,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:38,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:38,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461940243] [2021-06-05 05:02:38,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:38,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:38,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:38,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:38,679 INFO L87 Difference]: Start difference. First operand 687 states and 1623 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:38,793 INFO L93 Difference]: Finished difference Result 1072 states and 2458 transitions. [2021-06-05 05:02:38,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:02:38,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:38,795 INFO L225 Difference]: With dead ends: 1072 [2021-06-05 05:02:38,795 INFO L226 Difference]: Without dead ends: 1004 [2021-06-05 05:02:38,796 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 60.5ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:02:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-06-05 05:02:38,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 747. [2021-06-05 05:02:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 2.312332439678284) internal successors, (1725), 746 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1725 transitions. [2021-06-05 05:02:38,805 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1725 transitions. Word has length 36 [2021-06-05 05:02:38,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:38,806 INFO L482 AbstractCegarLoop]: Abstraction has 747 states and 1725 transitions. [2021-06-05 05:02:38,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,806 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1725 transitions. [2021-06-05 05:02:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:38,807 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:38,807 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:38,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 05:02:38,807 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:38,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1043005138, now seen corresponding path program 18 times [2021-06-05 05:02:38,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:38,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578906538] [2021-06-05 05:02:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:38,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:38,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578906538] [2021-06-05 05:02:38,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578906538] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:38,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:38,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:38,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528320127] [2021-06-05 05:02:38,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:38,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:38,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:38,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:38,832 INFO L87 Difference]: Start difference. First operand 747 states and 1725 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:38,937 INFO L93 Difference]: Finished difference Result 941 states and 2169 transitions. [2021-06-05 05:02:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:02:38,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:38,938 INFO L225 Difference]: With dead ends: 941 [2021-06-05 05:02:38,938 INFO L226 Difference]: Without dead ends: 787 [2021-06-05 05:02:38,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-06-05 05:02:38,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 685. [2021-06-05 05:02:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 2.3084795321637426) internal successors, (1579), 684 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1579 transitions. [2021-06-05 05:02:38,947 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1579 transitions. Word has length 36 [2021-06-05 05:02:38,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:38,948 INFO L482 AbstractCegarLoop]: Abstraction has 685 states and 1579 transitions. [2021-06-05 05:02:38,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1579 transitions. [2021-06-05 05:02:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:38,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:38,949 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:38,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 05:02:38,949 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:38,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:38,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1975445742, now seen corresponding path program 19 times [2021-06-05 05:02:38,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:38,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268773468] [2021-06-05 05:02:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:38,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:38,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268773468] [2021-06-05 05:02:38,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268773468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:38,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:38,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:38,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927030991] [2021-06-05 05:02:38,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:38,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:38,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:38,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:38,974 INFO L87 Difference]: Start difference. First operand 685 states and 1579 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:39,076 INFO L93 Difference]: Finished difference Result 855 states and 1962 transitions. [2021-06-05 05:02:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:02:39,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:39,077 INFO L225 Difference]: With dead ends: 855 [2021-06-05 05:02:39,077 INFO L226 Difference]: Without dead ends: 722 [2021-06-05 05:02:39,077 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 05:02:39,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-06-05 05:02:39,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 625. [2021-06-05 05:02:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.315705128205128) internal successors, (1445), 624 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1445 transitions. [2021-06-05 05:02:39,085 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1445 transitions. Word has length 36 [2021-06-05 05:02:39,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:39,085 INFO L482 AbstractCegarLoop]: Abstraction has 625 states and 1445 transitions. [2021-06-05 05:02:39,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,085 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1445 transitions. [2021-06-05 05:02:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:39,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:39,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:39,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 05:02:39,086 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:39,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1605414732, now seen corresponding path program 20 times [2021-06-05 05:02:39,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:39,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318671533] [2021-06-05 05:02:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:39,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:39,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318671533] [2021-06-05 05:02:39,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318671533] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:39,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:39,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:02:39,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254175801] [2021-06-05 05:02:39,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:02:39,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:39,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:02:39,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:02:39,113 INFO L87 Difference]: Start difference. First operand 625 states and 1445 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:39,219 INFO L93 Difference]: Finished difference Result 810 states and 1861 transitions. [2021-06-05 05:02:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:02:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:39,220 INFO L225 Difference]: With dead ends: 810 [2021-06-05 05:02:39,220 INFO L226 Difference]: Without dead ends: 761 [2021-06-05 05:02:39,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 56.4ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:02:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-06-05 05:02:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 631. [2021-06-05 05:02:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 2.3142857142857145) internal successors, (1458), 630 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1458 transitions. [2021-06-05 05:02:39,228 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1458 transitions. Word has length 36 [2021-06-05 05:02:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:39,229 INFO L482 AbstractCegarLoop]: Abstraction has 631 states and 1458 transitions. [2021-06-05 05:02:39,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1458 transitions. [2021-06-05 05:02:39,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:39,230 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:39,230 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:39,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 05:02:39,230 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:39,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:39,230 INFO L82 PathProgramCache]: Analyzing trace with hash 578791080, now seen corresponding path program 21 times [2021-06-05 05:02:39,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:39,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745789111] [2021-06-05 05:02:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:39,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:39,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745789111] [2021-06-05 05:02:39,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745789111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:39,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:39,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:39,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310303526] [2021-06-05 05:02:39,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:39,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:39,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:39,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:39,252 INFO L87 Difference]: Start difference. First operand 631 states and 1458 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:39,305 INFO L93 Difference]: Finished difference Result 760 states and 1753 transitions. [2021-06-05 05:02:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:02:39,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:39,306 INFO L225 Difference]: With dead ends: 760 [2021-06-05 05:02:39,306 INFO L226 Difference]: Without dead ends: 588 [2021-06-05 05:02:39,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:02:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-06-05 05:02:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 521. [2021-06-05 05:02:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.3134615384615387) internal successors, (1203), 520 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1203 transitions. [2021-06-05 05:02:39,313 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1203 transitions. Word has length 36 [2021-06-05 05:02:39,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:39,313 INFO L482 AbstractCegarLoop]: Abstraction has 521 states and 1203 transitions. [2021-06-05 05:02:39,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1203 transitions. [2021-06-05 05:02:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:39,314 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:39,314 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:39,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 05:02:39,314 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:39,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1889566906, now seen corresponding path program 22 times [2021-06-05 05:02:39,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:39,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918815430] [2021-06-05 05:02:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:39,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:39,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918815430] [2021-06-05 05:02:39,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918815430] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:39,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:39,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:02:39,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585552895] [2021-06-05 05:02:39,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:02:39,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:39,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:02:39,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:02:39,340 INFO L87 Difference]: Start difference. First operand 521 states and 1203 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:39,445 INFO L93 Difference]: Finished difference Result 699 states and 1564 transitions. [2021-06-05 05:02:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:02:39,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:39,447 INFO L225 Difference]: With dead ends: 699 [2021-06-05 05:02:39,447 INFO L226 Difference]: Without dead ends: 598 [2021-06-05 05:02:39,447 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:02:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-06-05 05:02:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 434. [2021-06-05 05:02:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.325635103926097) internal successors, (1007), 433 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1007 transitions. [2021-06-05 05:02:39,452 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1007 transitions. Word has length 36 [2021-06-05 05:02:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:39,452 INFO L482 AbstractCegarLoop]: Abstraction has 434 states and 1007 transitions. [2021-06-05 05:02:39,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,453 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1007 transitions. [2021-06-05 05:02:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:39,453 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:39,453 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:39,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 05:02:39,453 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:39,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:39,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1799608796, now seen corresponding path program 23 times [2021-06-05 05:02:39,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:39,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984394353] [2021-06-05 05:02:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:39,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:39,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984394353] [2021-06-05 05:02:39,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984394353] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:39,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:39,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:02:39,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598224350] [2021-06-05 05:02:39,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 05:02:39,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:39,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 05:02:39,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 05:02:39,488 INFO L87 Difference]: Start difference. First operand 434 states and 1007 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:39,628 INFO L93 Difference]: Finished difference Result 598 states and 1372 transitions. [2021-06-05 05:02:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:02:39,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:39,629 INFO L225 Difference]: With dead ends: 598 [2021-06-05 05:02:39,629 INFO L226 Difference]: Without dead ends: 546 [2021-06-05 05:02:39,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 65.8ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-05 05:02:39,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-06-05 05:02:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 441. [2021-06-05 05:02:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 2.3227272727272728) internal successors, (1022), 440 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1022 transitions. [2021-06-05 05:02:39,635 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1022 transitions. Word has length 36 [2021-06-05 05:02:39,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:39,635 INFO L482 AbstractCegarLoop]: Abstraction has 441 states and 1022 transitions. [2021-06-05 05:02:39,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,635 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1022 transitions. [2021-06-05 05:02:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:39,636 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:39,636 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:39,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 05:02:39,636 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:39,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1002873044, now seen corresponding path program 24 times [2021-06-05 05:02:39,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:39,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365742431] [2021-06-05 05:02:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:39,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:39,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365742431] [2021-06-05 05:02:39,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365742431] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:39,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:39,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:02:39,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148103304] [2021-06-05 05:02:39,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:39,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:39,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:39,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:39,658 INFO L87 Difference]: Start difference. First operand 441 states and 1022 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:39,703 INFO L93 Difference]: Finished difference Result 542 states and 1249 transitions. [2021-06-05 05:02:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:02:39,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:39,703 INFO L225 Difference]: With dead ends: 542 [2021-06-05 05:02:39,703 INFO L226 Difference]: Without dead ends: 381 [2021-06-05 05:02:39,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:02:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-06-05 05:02:39,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 342. [2021-06-05 05:02:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.346041055718475) internal successors, (800), 341 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 800 transitions. [2021-06-05 05:02:39,708 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 800 transitions. Word has length 36 [2021-06-05 05:02:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:39,708 INFO L482 AbstractCegarLoop]: Abstraction has 342 states and 800 transitions. [2021-06-05 05:02:39,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 800 transitions. [2021-06-05 05:02:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:39,708 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:39,709 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:39,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 05:02:39,709 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:39,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:39,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1626416734, now seen corresponding path program 25 times [2021-06-05 05:02:39,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:39,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805346595] [2021-06-05 05:02:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:39,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:39,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805346595] [2021-06-05 05:02:39,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805346595] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:39,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:39,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:02:39,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530833414] [2021-06-05 05:02:39,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:02:39,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:39,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:02:39,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:02:39,756 INFO L87 Difference]: Start difference. First operand 342 states and 800 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:39,833 INFO L93 Difference]: Finished difference Result 452 states and 1058 transitions. [2021-06-05 05:02:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:02:39,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:39,834 INFO L225 Difference]: With dead ends: 452 [2021-06-05 05:02:39,834 INFO L226 Difference]: Without dead ends: 432 [2021-06-05 05:02:39,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:39,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-06-05 05:02:39,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 377. [2021-06-05 05:02:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3351063829787235) internal successors, (878), 376 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 878 transitions. [2021-06-05 05:02:39,840 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 878 transitions. Word has length 36 [2021-06-05 05:02:39,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:39,840 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 878 transitions. [2021-06-05 05:02:39,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 878 transitions. [2021-06-05 05:02:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:39,840 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:39,840 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:39,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 05:02:39,841 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:39,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:39,842 INFO L82 PathProgramCache]: Analyzing trace with hash 610360926, now seen corresponding path program 26 times [2021-06-05 05:02:39,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:39,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471544257] [2021-06-05 05:02:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:39,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:39,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471544257] [2021-06-05 05:02:39,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471544257] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:39,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:39,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:02:39,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264615304] [2021-06-05 05:02:39,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:02:39,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:39,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:02:39,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:02:39,890 INFO L87 Difference]: Start difference. First operand 377 states and 878 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:39,948 INFO L93 Difference]: Finished difference Result 397 states and 914 transitions. [2021-06-05 05:02:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:02:39,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:39,948 INFO L225 Difference]: With dead ends: 397 [2021-06-05 05:02:39,948 INFO L226 Difference]: Without dead ends: 332 [2021-06-05 05:02:39,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-06-05 05:02:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-06-05 05:02:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.3323262839879155) internal successors, (772), 331 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 772 transitions. [2021-06-05 05:02:39,953 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 772 transitions. Word has length 36 [2021-06-05 05:02:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:39,953 INFO L482 AbstractCegarLoop]: Abstraction has 332 states and 772 transitions. [2021-06-05 05:02:39,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 772 transitions. [2021-06-05 05:02:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:39,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:39,955 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:39,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 05:02:39,955 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:39,956 INFO L82 PathProgramCache]: Analyzing trace with hash -777524160, now seen corresponding path program 27 times [2021-06-05 05:02:39,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:39,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977228091] [2021-06-05 05:02:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:39,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:39,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977228091] [2021-06-05 05:02:39,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977228091] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:39,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:39,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:02:39,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156520736] [2021-06-05 05:02:39,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:02:39,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:39,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:02:39,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:02:39,999 INFO L87 Difference]: Start difference. First operand 332 states and 772 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:40,065 INFO L93 Difference]: Finished difference Result 472 states and 1099 transitions. [2021-06-05 05:02:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:02:40,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:40,066 INFO L225 Difference]: With dead ends: 472 [2021-06-05 05:02:40,066 INFO L226 Difference]: Without dead ends: 452 [2021-06-05 05:02:40,066 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 71.4ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-06-05 05:02:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 377. [2021-06-05 05:02:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3218085106382977) internal successors, (873), 376 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 873 transitions. [2021-06-05 05:02:40,071 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 873 transitions. Word has length 36 [2021-06-05 05:02:40,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:40,071 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 873 transitions. [2021-06-05 05:02:40,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 873 transitions. [2021-06-05 05:02:40,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:40,072 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:40,072 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] [2021-06-05 05:02:40,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 05:02:40,072 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:40,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:40,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1793579968, now seen corresponding path program 28 times [2021-06-05 05:02:40,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:40,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507925653] [2021-06-05 05:02:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:40,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:40,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507925653] [2021-06-05 05:02:40,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507925653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:40,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:40,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 05:02:40,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138173972] [2021-06-05 05:02:40,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 05:02:40,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:40,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 05:02:40,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 05:02:40,115 INFO L87 Difference]: Start difference. First operand 377 states and 873 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:40,193 INFO L93 Difference]: Finished difference Result 397 states and 909 transitions. [2021-06-05 05:02:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 05:02:40,193 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:40,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:40,193 INFO L225 Difference]: With dead ends: 397 [2021-06-05 05:02:40,193 INFO L226 Difference]: Without dead ends: 327 [2021-06-05 05:02:40,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-06-05 05:02:40,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-06-05 05:02:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-06-05 05:02:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 2.3251533742331287) internal successors, (758), 326 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 758 transitions. [2021-06-05 05:02:40,199 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 758 transitions. Word has length 36 [2021-06-05 05:02:40,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:40,199 INFO L482 AbstractCegarLoop]: Abstraction has 327 states and 758 transitions. [2021-06-05 05:02:40,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 758 transitions. [2021-06-05 05:02:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 05:02:40,205 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:40,205 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:40,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 05:02:40,205 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2007695822, now seen corresponding path program 29 times [2021-06-05 05:02:40,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:40,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166121978] [2021-06-05 05:02:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:40,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:40,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166121978] [2021-06-05 05:02:40,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166121978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:02:40,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:02:40,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 05:02:40,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082606226] [2021-06-05 05:02:40,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:02:40,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:40,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:02:40,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:02:40,232 INFO L87 Difference]: Start difference. First operand 327 states and 758 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:40,259 INFO L93 Difference]: Finished difference Result 189 states and 426 transitions. [2021-06-05 05:02:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 05:02:40,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 05:02:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:40,259 INFO L225 Difference]: With dead ends: 189 [2021-06-05 05:02:40,259 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 05:02:40,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 05:02:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 05:02:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 05:02:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 05:02:40,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-06-05 05:02:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:40,260 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 05:02:40,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 05:02:40,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 05:02:40,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 05:02:40,261 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 05:02:40,263 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 05:02:40 BasicIcfg [2021-06-05 05:02:40,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 05:02:40,263 INFO L168 Benchmark]: Toolchain (without parser) took 5006.22 ms. Allocated memory was 427.8 MB in the beginning and 532.7 MB in the end (delta: 104.9 MB). Free memory was 407.3 MB in the beginning and 438.9 MB in the end (delta: -31.6 MB). Peak memory consumption was 76.3 MB. Max. memory is 16.0 GB. [2021-06-05 05:02:40,264 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 427.8 MB. Free memory was 408.4 MB in the beginning and 408.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 05:02:40,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.42 ms. Allocated memory is still 427.8 MB. Free memory was 407.2 MB in the beginning and 405.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 05:02:40,264 INFO L168 Benchmark]: Boogie Preprocessor took 9.39 ms. Allocated memory is still 427.8 MB. Free memory was 405.6 MB in the beginning and 404.8 MB in the end (delta: 849.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 05:02:40,264 INFO L168 Benchmark]: RCFGBuilder took 185.84 ms. Allocated memory is still 427.8 MB. Free memory was 404.8 MB in the beginning and 392.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-05 05:02:40,264 INFO L168 Benchmark]: TraceAbstraction took 4782.95 ms. Allocated memory was 427.8 MB in the beginning and 532.7 MB in the end (delta: 104.9 MB). Free memory was 392.1 MB in the beginning and 438.9 MB in the end (delta: -46.8 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.0 GB. [2021-06-05 05:02:40,264 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 0.12 ms. Allocated memory is still 427.8 MB. Free memory was 408.4 MB in the beginning and 408.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.42 ms. Allocated memory is still 427.8 MB. Free memory was 407.2 MB in the beginning and 405.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.39 ms. Allocated memory is still 427.8 MB. Free memory was 405.6 MB in the beginning and 404.8 MB in the end (delta: 849.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 185.84 ms. Allocated memory is still 427.8 MB. Free memory was 404.8 MB in the beginning and 392.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4782.95 ms. Allocated memory was 427.8 MB in the beginning and 532.7 MB in the end (delta: 104.9 MB). Free memory was 392.1 MB in the beginning and 438.9 MB in the end (delta: -46.8 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 71 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4713.9ms, OverallIterations: 29, TraceHistogramMax: 1, EmptinessCheckTime: 51.7ms, AutomataDifference: 2813.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 84.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2558 SDtfs, 3423 SDslu, 8384 SDs, 0 SdLazy, 2986 SolverSat, 373 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1031.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1666.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=854occurred in iteration=7, InterpolantAutomatonStates: 337, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 402.4ms AutomataMinimizationTime, 29 MinimizatonAttempts, 6894 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.2ms SsaConstructionTime, 107.3ms SatisfiabilityAnalysisTime, 1048.2ms InterpolantComputationTime, 1044 NumberOfCodeBlocks, 1044 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1015 ConstructedInterpolants, 0 QuantifiedInterpolants, 3663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...