/usr/bin/java -Xmx8000000000 -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-Delay.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-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 01:08:10,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 01:08:10,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 01:08:10,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 01:08:10,601 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-Delay.epf [2021-07-14 01:08:10,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 01:08:10,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 01:08:10,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 01:08:10,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 01:08:10,621 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 01:08:10,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 01:08:10,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 01:08:10,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 01:08:10,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 01:08:10,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 01:08:10,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 01:08:10,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 01:08:10,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 01:08:10,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 01:08:10,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 01:08:10,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 01:08:10,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 01:08:10,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 01:08:10,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 01:08:10,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 01:08:10,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 01:08:10,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 01:08:10,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 01:08:10,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 01:08:10,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 01:08:10,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 01:08:10,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 01:08:10,625 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 01:08:10,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 01:08:10,626 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 01:08:10,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 01:08:10,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 01:08:10,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 01:08:10,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 01:08:10,921 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 01:08:10,922 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 01:08:10,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-07-14 01:08:10,935 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-07-14 01:08:10,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 01:08:10,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 01:08:10,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 01:08:10,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 01:08:10,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 01:08:10,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (1/1) ... [2021-07-14 01:08:10,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (1/1) ... [2021-07-14 01:08:10,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 01:08:10,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 01:08:10,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 01:08:10,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 01:08:11,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (1/1) ... [2021-07-14 01:08:11,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (1/1) ... [2021-07-14 01:08:11,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (1/1) ... [2021-07-14 01:08:11,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (1/1) ... [2021-07-14 01:08:11,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (1/1) ... [2021-07-14 01:08:11,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (1/1) ... [2021-07-14 01:08:11,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (1/1) ... [2021-07-14 01:08:11,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 01:08:11,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 01:08:11,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 01:08:11,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 01:08:11,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (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 [2021-07-14 01:08:11,078 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 01:08:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 01:08:11,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 01:08:11,079 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 01:08:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 01:08:11,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 01:08:11,079 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 01:08:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 01:08:11,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 01:08:11,080 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 01:08:11,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 01:08:11,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 01:08:11,080 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 01:08:11,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 01:08:11,200 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 01:08:11,201 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:08:11 BoogieIcfgContainer [2021-07-14 01:08:11,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 01:08:11,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 01:08:11,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 01:08:11,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 01:08:11,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:08:10" (1/2) ... [2021-07-14 01:08:11,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75061fbd and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:08:11, skipping insertion in model container [2021-07-14 01:08:11,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:08:11" (2/2) ... [2021-07-14 01:08:11,206 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-07-14 01:08:11,209 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 01:08:11,210 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 01:08:11,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 01:08:11,210 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 01:08:11,269 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 01:08:11,284 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-14 01:08:11,295 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 01:08:11,296 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 01:08:11,296 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 01:08:11,296 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 01:08:11,296 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 01:08:11,296 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 01:08:11,296 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 01:08:11,296 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 01:08:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 507 states have (on average 1.5502958579881656) internal successors, (786), 672 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:08:11,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-14 01:08:11,527 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:08:11,528 INFO L508 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] [2021-07-14 01:08:11,528 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:08:11,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:08:11,534 INFO L82 PathProgramCache]: Analyzing trace with hash 824825468, now seen corresponding path program 1 times [2021-07-14 01:08:11,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:08:11,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033205735] [2021-07-14 01:08:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:08:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:08:11,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:11,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:11,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:11,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:11,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:11,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:08:11,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:11,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:08:11,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:11,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:11,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:11,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:08:11,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:11,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:11,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:11,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:08:11,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:08:11,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033205735] [2021-07-14 01:08:11,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033205735] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:08:11,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:08:11,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:08:11,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115884041] [2021-07-14 01:08:11,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:08:11,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:08:11,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:08:11,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:08:11,755 INFO L87 Difference]: Start difference. First operand has 673 states, 507 states have (on average 1.5502958579881656) internal successors, (786), 672 states have internal predecessors, (786), 0 states have call successors, (0), 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) [2021-07-14 01:08:11,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:08:11,914 INFO L93 Difference]: Finished difference Result 805 states and 954 transitions. [2021-07-14 01:08:11,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:08:11,915 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 [2021-07-14 01:08:11,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:08:11,921 INFO L225 Difference]: With dead ends: 805 [2021-07-14 01:08:11,922 INFO L226 Difference]: Without dead ends: 122 [2021-07-14 01:08:11,923 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:08:11,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-07-14 01:08:11,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2021-07-14 01:08:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.4854368932038835) internal successors, (153), 103 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:08:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 153 transitions. [2021-07-14 01:08:11,959 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 153 transitions. Word has length 36 [2021-07-14 01:08:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:08:11,960 INFO L482 AbstractCegarLoop]: Abstraction has 104 states and 153 transitions. [2021-07-14 01:08:11,960 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) [2021-07-14 01:08:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 153 transitions. [2021-07-14 01:08:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-14 01:08:11,962 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:08:11,962 INFO L508 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] [2021-07-14 01:08:11,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 01:08:11,963 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:08:11,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:08:11,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1530593600, now seen corresponding path program 2 times [2021-07-14 01:08:11,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:08:11,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155144222] [2021-07-14 01:08:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:08:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:08:12,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:12,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:12,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:08:12,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:08:12,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:08:12,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:12,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:08:12,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:08:12,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155144222] [2021-07-14 01:08:12,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155144222] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:08:12,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:08:12,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:08:12,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560039506] [2021-07-14 01:08:12,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:08:12,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:08:12,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:08:12,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:08:12,078 INFO L87 Difference]: Start difference. First operand 104 states and 153 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) [2021-07-14 01:08:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:08:12,156 INFO L93 Difference]: Finished difference Result 128 states and 182 transitions. [2021-07-14 01:08:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:08:12,157 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 [2021-07-14 01:08:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:08:12,158 INFO L225 Difference]: With dead ends: 128 [2021-07-14 01:08:12,158 INFO L226 Difference]: Without dead ends: 91 [2021-07-14 01:08:12,158 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:08:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-07-14 01:08:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2021-07-14 01:08:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 82 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:08:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 114 transitions. [2021-07-14 01:08:12,162 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 114 transitions. Word has length 36 [2021-07-14 01:08:12,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:08:12,162 INFO L482 AbstractCegarLoop]: Abstraction has 83 states and 114 transitions. [2021-07-14 01:08:12,162 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) [2021-07-14 01:08:12,163 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 114 transitions. [2021-07-14 01:08:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-14 01:08:12,163 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:08:12,163 INFO L508 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] [2021-07-14 01:08:12,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 01:08:12,163 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:08:12,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:08:12,164 INFO L82 PathProgramCache]: Analyzing trace with hash -952146608, now seen corresponding path program 3 times [2021-07-14 01:08:12,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:08:12,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508552265] [2021-07-14 01:08:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:08:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:08:12,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:12,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:12,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:12,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:08:12,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:08:12,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:08:12,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508552265] [2021-07-14 01:08:12,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508552265] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:08:12,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:08:12,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:08:12,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644110496] [2021-07-14 01:08:12,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:08:12,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:08:12,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:08:12,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:08:12,223 INFO L87 Difference]: Start difference. First operand 83 states and 114 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) [2021-07-14 01:08:12,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:08:12,313 INFO L93 Difference]: Finished difference Result 156 states and 217 transitions. [2021-07-14 01:08:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:08:12,313 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 [2021-07-14 01:08:12,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:08:12,314 INFO L225 Difference]: With dead ends: 156 [2021-07-14 01:08:12,314 INFO L226 Difference]: Without dead ends: 130 [2021-07-14 01:08:12,314 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 66.9ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-07-14 01:08:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-07-14 01:08:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 73. [2021-07-14 01:08:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 72 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:08:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2021-07-14 01:08:12,319 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 36 [2021-07-14 01:08:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:08:12,319 INFO L482 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-07-14 01:08:12,319 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) [2021-07-14 01:08:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2021-07-14 01:08:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-14 01:08:12,320 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:08:12,320 INFO L508 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] [2021-07-14 01:08:12,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 01:08:12,320 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:08:12,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:08:12,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1222420366, now seen corresponding path program 4 times [2021-07-14 01:08:12,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:08:12,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020436846] [2021-07-14 01:08:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:08:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:08:12,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:08:12,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:08:12,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020436846] [2021-07-14 01:08:12,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020436846] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:08:12,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:08:12,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 01:08:12,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716410704] [2021-07-14 01:08:12,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 01:08:12,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:08:12,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 01:08:12,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:08:12,336 INFO L87 Difference]: Start difference. First operand 73 states and 101 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) [2021-07-14 01:08:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:08:12,339 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2021-07-14 01:08:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 01:08:12,340 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 [2021-07-14 01:08:12,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:08:12,340 INFO L225 Difference]: With dead ends: 69 [2021-07-14 01:08:12,340 INFO L226 Difference]: Without dead ends: 67 [2021-07-14 01:08:12,340 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:08:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-07-14 01:08:12,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-07-14 01:08:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.378787878787879) internal successors, (91), 66 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:08:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2021-07-14 01:08:12,343 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 36 [2021-07-14 01:08:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:08:12,343 INFO L482 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2021-07-14 01:08:12,343 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) [2021-07-14 01:08:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2021-07-14 01:08:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-14 01:08:12,344 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:08:12,344 INFO L508 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] [2021-07-14 01:08:12,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 01:08:12,344 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:08:12,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:08:12,344 INFO L82 PathProgramCache]: Analyzing trace with hash 30369694, now seen corresponding path program 5 times [2021-07-14 01:08:12,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:08:12,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194907517] [2021-07-14 01:08:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:08:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:08:12,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:08:12,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:08:12,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194907517] [2021-07-14 01:08:12,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194907517] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:08:12,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:08:12,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 01:08:12,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694755995] [2021-07-14 01:08:12,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 01:08:12,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:08:12,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 01:08:12,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:08:12,360 INFO L87 Difference]: Start difference. First operand 67 states and 91 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) [2021-07-14 01:08:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:08:12,363 INFO L93 Difference]: Finished difference Result 67 states and 89 transitions. [2021-07-14 01:08:12,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 01:08:12,364 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 [2021-07-14 01:08:12,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:08:12,364 INFO L225 Difference]: With dead ends: 67 [2021-07-14 01:08:12,364 INFO L226 Difference]: Without dead ends: 67 [2021-07-14 01:08:12,364 INFO L764 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 [2021-07-14 01:08:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-07-14 01:08:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-07-14 01:08:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:08:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2021-07-14 01:08:12,367 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 36 [2021-07-14 01:08:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:08:12,367 INFO L482 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2021-07-14 01:08:12,367 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) [2021-07-14 01:08:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2021-07-14 01:08:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-14 01:08:12,368 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:08:12,368 INFO L508 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] [2021-07-14 01:08:12,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-14 01:08:12,368 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:08:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:08:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1575395886, now seen corresponding path program 6 times [2021-07-14 01:08:12,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:08:12,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658439221] [2021-07-14 01:08:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:08:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:08:12,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:12,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,448 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-07-14 01:08:12,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:08:12,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:08:12,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:08:12,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658439221] [2021-07-14 01:08:12,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658439221] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:08:12,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:08:12,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:08:12,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442443326] [2021-07-14 01:08:12,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:08:12,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:08:12,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:08:12,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:08:12,479 INFO L87 Difference]: Start difference. First operand 67 states and 89 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) [2021-07-14 01:08:12,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:08:12,574 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2021-07-14 01:08:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:08:12,574 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 [2021-07-14 01:08:12,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:08:12,576 INFO L225 Difference]: With dead ends: 85 [2021-07-14 01:08:12,577 INFO L226 Difference]: Without dead ends: 81 [2021-07-14 01:08:12,577 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-14 01:08:12,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-07-14 01:08:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2021-07-14 01:08:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 72 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:08:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2021-07-14 01:08:12,585 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 36 [2021-07-14 01:08:12,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:08:12,586 INFO L482 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2021-07-14 01:08:12,586 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) [2021-07-14 01:08:12,586 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2021-07-14 01:08:12,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-14 01:08:12,586 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:08:12,586 INFO L508 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] [2021-07-14 01:08:12,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-14 01:08:12,586 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:08:12,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:08:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1108645330, now seen corresponding path program 7 times [2021-07-14 01:08:12,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:08:12,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23027487] [2021-07-14 01:08:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:08:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:08:12,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:12,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:08:12,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:08:12,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:08:12,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23027487] [2021-07-14 01:08:12,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23027487] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:08:12,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:08:12,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:08:12,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781775900] [2021-07-14 01:08:12,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:08:12,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:08:12,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:08:12,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:08:12,660 INFO L87 Difference]: Start difference. First operand 73 states and 97 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) [2021-07-14 01:08:12,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:08:12,748 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2021-07-14 01:08:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:08:12,749 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 [2021-07-14 01:08:12,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:08:12,749 INFO L225 Difference]: With dead ends: 75 [2021-07-14 01:08:12,749 INFO L226 Difference]: Without dead ends: 66 [2021-07-14 01:08:12,749 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-14 01:08:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-07-14 01:08:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-07-14 01:08:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 65 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:08:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2021-07-14 01:08:12,752 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 36 [2021-07-14 01:08:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:08:12,752 INFO L482 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2021-07-14 01:08:12,752 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) [2021-07-14 01:08:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2021-07-14 01:08:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-14 01:08:12,753 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:08:12,753 INFO L508 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] [2021-07-14 01:08:12,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-14 01:08:12,753 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:08:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:08:12,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1808206338, now seen corresponding path program 8 times [2021-07-14 01:08:12,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:08:12,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27698111] [2021-07-14 01:08:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:08:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:08:12,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:12,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:08:12,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:08:12,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27698111] [2021-07-14 01:08:12,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27698111] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:08:12,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:08:12,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:08:12,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520152905] [2021-07-14 01:08:12,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:08:12,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:08:12,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:08:12,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:08:12,839 INFO L87 Difference]: Start difference. First operand 66 states and 87 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) [2021-07-14 01:08:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:08:12,944 INFO L93 Difference]: Finished difference Result 88 states and 118 transitions. [2021-07-14 01:08:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:08:12,944 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 [2021-07-14 01:08:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:08:12,945 INFO L225 Difference]: With dead ends: 88 [2021-07-14 01:08:12,945 INFO L226 Difference]: Without dead ends: 84 [2021-07-14 01:08:12,945 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-07-14 01:08:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-07-14 01:08:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2021-07-14 01:08:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:08:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2021-07-14 01:08:12,947 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 36 [2021-07-14 01:08:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:08:12,947 INFO L482 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2021-07-14 01:08:12,948 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) [2021-07-14 01:08:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2021-07-14 01:08:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-14 01:08:12,948 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:08:12,948 INFO L508 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] [2021-07-14 01:08:12,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-14 01:08:12,948 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:08:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:08:12,949 INFO L82 PathProgramCache]: Analyzing trace with hash -875834878, now seen corresponding path program 9 times [2021-07-14 01:08:12,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:08:12,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562742476] [2021-07-14 01:08:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:08:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:08:12,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:12,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:12,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:12,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:12,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:13,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:13,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:13,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:13,028 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-07-14 01:08:13,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:13,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:08:13,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:08:13,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562742476] [2021-07-14 01:08:13,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562742476] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:08:13,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:08:13,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:08:13,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453267217] [2021-07-14 01:08:13,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:08:13,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:08:13,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:08:13,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:08:13,044 INFO L87 Difference]: Start difference. First operand 74 states and 98 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) [2021-07-14 01:08:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:08:13,138 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2021-07-14 01:08:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:08:13,138 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 [2021-07-14 01:08:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:08:13,139 INFO L225 Difference]: With dead ends: 76 [2021-07-14 01:08:13,139 INFO L226 Difference]: Without dead ends: 64 [2021-07-14 01:08:13,141 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-07-14 01:08:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-07-14 01:08:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-07-14 01:08:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:08:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2021-07-14 01:08:13,153 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 36 [2021-07-14 01:08:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:08:13,155 INFO L482 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2021-07-14 01:08:13,155 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) [2021-07-14 01:08:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2021-07-14 01:08:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-14 01:08:13,155 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:08:13,156 INFO L508 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] [2021-07-14 01:08:13,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-14 01:08:13,156 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:08:13,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:08:13,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1260770848, now seen corresponding path program 10 times [2021-07-14 01:08:13,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:08:13,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168453967] [2021-07-14 01:08:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:08:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:08:13,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:13,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:13,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:13,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:08:13,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:08:13,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 01:08:13,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:08:13,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:08:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:08:13,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:08:13,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168453967] [2021-07-14 01:08:13,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168453967] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:08:13,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:08:13,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:08:13,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783278023] [2021-07-14 01:08:13,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:08:13,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:08:13,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:08:13,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:08:13,208 INFO L87 Difference]: Start difference. First operand 64 states and 84 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) [2021-07-14 01:08:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:08:13,253 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-07-14 01:08:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:08:13,254 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 [2021-07-14 01:08:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:08:13,254 INFO L225 Difference]: With dead ends: 39 [2021-07-14 01:08:13,254 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 01:08:13,255 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:08:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 01:08:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 01:08:13,255 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) [2021-07-14 01:08:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 01:08:13,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-07-14 01:08:13,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:08:13,256 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 01:08:13,256 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) [2021-07-14 01:08:13,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 01:08:13,256 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 01:08:13,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-14 01:08:13,257 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 01:08:13,259 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 01:08:13 BasicIcfg [2021-07-14 01:08:13,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 01:08:13,262 INFO L168 Benchmark]: Toolchain (without parser) took 2292.50 ms. Allocated memory was 194.0 MB in the beginning and 241.2 MB in the end (delta: 47.2 MB). Free memory was 173.4 MB in the beginning and 187.1 MB in the end (delta: -13.7 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB. [2021-07-14 01:08:13,262 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.47 ms. Allocated memory is still 194.0 MB. Free memory is still 174.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 01:08:13,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.02 ms. Allocated memory is still 194.0 MB. Free memory was 173.3 MB in the beginning and 171.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 01:08:13,263 INFO L168 Benchmark]: Boogie Preprocessor took 16.24 ms. Allocated memory is still 194.0 MB. Free memory was 171.9 MB in the beginning and 170.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 01:08:13,264 INFO L168 Benchmark]: RCFGBuilder took 188.17 ms. Allocated memory is still 194.0 MB. Free memory was 170.8 MB in the beginning and 158.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-14 01:08:13,264 INFO L168 Benchmark]: TraceAbstraction took 2057.66 ms. Allocated memory was 194.0 MB in the beginning and 241.2 MB in the end (delta: 47.2 MB). Free memory was 158.3 MB in the beginning and 187.1 MB in the end (delta: -28.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-07-14 01:08:13,269 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 0.47 ms. Allocated memory is still 194.0 MB. Free memory is still 174.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.02 ms. Allocated memory is still 194.0 MB. Free memory was 173.3 MB in the beginning and 171.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.24 ms. Allocated memory is still 194.0 MB. Free memory was 171.9 MB in the beginning and 170.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 188.17 ms. Allocated memory is still 194.0 MB. Free memory was 170.8 MB in the beginning and 158.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2057.66 ms. Allocated memory was 194.0 MB in the beginning and 241.2 MB in the end (delta: 47.2 MB). Free memory was 158.3 MB in the beginning and 187.1 MB in the end (delta: -28.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1123, positive: 1099, positive conditional: 1099, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1123, positive: 1099, positive conditional: 0, positive unconditional: 1099, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 206, positive: 194, positive conditional: 0, positive unconditional: 194, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 206, positive: 191, positive conditional: 0, positive unconditional: 191, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 46, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1123, positive: 905, positive conditional: 0, positive unconditional: 905, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 206, unknown conditional: 0, unknown unconditional: 206] , Statistics on independence cache: Total cache size (in pairs): 206, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Independence queries for same thread: 0 - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 71 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1962.4ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 30.8ms, AutomataDifference: 803.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 204.8ms, PartialOrderReductionTime: 194.3ms, HoareTripleCheckerStatistics: 397 SDtfs, 689 SDslu, 995 SDs, 0 SdLazy, 383 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 205.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 704.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=673occurred in iteration=0, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 63.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.7ms SsaConstructionTime, 67.5ms SatisfiabilityAnalysisTime, 630.6ms InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 1066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...