/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 22:20:51,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 22:20:51,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 22:20:52,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 22:20:52,058 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 22:20:52,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 22:20:52,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 22:20:52,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 22:20:52,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 22:20:52,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 22:20:52,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 22:20:52,084 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 22:20:52,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 22:20:52,084 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 22:20:52,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 22:20:52,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 22:20:52,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 22:20:52,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 22:20:52,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 22:20:52,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 22:20:52,085 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 22:20:52,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 22:20:52,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 22:20:52,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 22:20:52,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 22:20:52,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 22:20:52,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 22:20:52,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 22:20:52,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 22:20:52,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 22:20:52,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 22:20:52,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 22:20:52,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 22:20:52,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 22:20:52,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 22:20:52,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 22:20:52,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 22:20:52,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 22:20:52,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 22:20:52,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 22:20:52,397 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-10 22:20:52,399 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-10 22:20:52,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-03-10 22:20:52,400 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-03-10 22:20:52,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 22:20:52,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-10 22:20:52,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 22:20:52,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 22:20:52,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 22:20:52,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (1/1) ... [2021-03-10 22:20:52,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (1/1) ... [2021-03-10 22:20:52,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 22:20:52,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 22:20:52,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 22:20:52,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 22:20:52,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (1/1) ... [2021-03-10 22:20:52,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (1/1) ... [2021-03-10 22:20:52,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (1/1) ... [2021-03-10 22:20:52,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (1/1) ... [2021-03-10 22:20:52,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (1/1) ... [2021-03-10 22:20:52,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (1/1) ... [2021-03-10 22:20:52,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (1/1) ... [2021-03-10 22:20:52,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 22:20:52,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 22:20:52,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 22:20:52,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 22:20:52,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (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 [2021-03-10 22:20:52,766 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-10 22:20:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-10 22:20:52,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-10 22:20:52,766 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-10 22:20:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-10 22:20:52,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-10 22:20:52,767 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-10 22:20:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 22:20:52,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 22:20:52,767 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-10 22:20:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-10 22:20:52,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-10 22:20:52,768 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 22:20:52,931 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 22:20:52,931 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-10 22:20:52,933 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:20:52 BoogieIcfgContainer [2021-03-10 22:20:52,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 22:20:52,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 22:20:52,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 22:20:52,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 22:20:52,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:20:52" (1/2) ... [2021-03-10 22:20:52,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164fa43b and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 10:20:52, skipping insertion in model container [2021-03-10 22:20:52,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:20:52" (2/2) ... [2021-03-10 22:20:52,938 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-03-10 22:20:52,943 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 22:20:52,943 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 22:20:52,946 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 22:20:52,946 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 22:20:52,994 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-10 22:20:53,009 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 22:20:53,033 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 22:20:53,033 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 22:20:53,033 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 22:20:53,033 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 22:20:53,034 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 22:20:53,034 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 22:20:53,047 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 22:20:53,047 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 22:20:53,054 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 41 transitions, 106 flow [2021-03-10 22:20:53,170 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:53,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:53,195 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:53,198 INFO L519 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] [2021-03-10 22:20:53,199 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:53,206 INFO L82 PathProgramCache]: Analyzing trace with hash 974063972, now seen corresponding path program 1 times [2021-03-10 22:20:53,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:53,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568687465] [2021-03-10 22:20:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:53,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568687465] [2021-03-10 22:20:53,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:53,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:53,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37528451] [2021-03-10 22:20:53,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:53,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:53,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:53,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:53,480 INFO L87 Difference]: Start difference. First operand has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:53,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:53,708 INFO L93 Difference]: Finished difference Result 998 states and 2445 transitions. [2021-03-10 22:20:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:20:53,709 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 [2021-03-10 22:20:53,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:53,729 INFO L225 Difference]: With dead ends: 998 [2021-03-10 22:20:53,729 INFO L226 Difference]: Without dead ends: 923 [2021-03-10 22:20:53,731 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:20:53,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-03-10 22:20:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 687. [2021-03-10 22:20:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.564139941690962) internal successors, (1759), 686 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1759 transitions. [2021-03-10 22:20:53,825 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1759 transitions. Word has length 36 [2021-03-10 22:20:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:53,825 INFO L480 AbstractCegarLoop]: Abstraction has 687 states and 1759 transitions. [2021-03-10 22:20:53,825 INFO L481 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) [2021-03-10 22:20:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1759 transitions. [2021-03-10 22:20:53,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:53,828 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:53,828 INFO L519 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] [2021-03-10 22:20:53,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 22:20:53,829 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:53,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1374757314, now seen corresponding path program 2 times [2021-03-10 22:20:53,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:53,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600562076] [2021-03-10 22:20:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:53,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600562076] [2021-03-10 22:20:53,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:53,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:20:53,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514201567] [2021-03-10 22:20:53,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:53,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:53,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:53,951 INFO L87 Difference]: Start difference. First operand 687 states and 1759 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:54,059 INFO L93 Difference]: Finished difference Result 1384 states and 3517 transitions. [2021-03-10 22:20:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:20:54,060 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 [2021-03-10 22:20:54,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:54,066 INFO L225 Difference]: With dead ends: 1384 [2021-03-10 22:20:54,066 INFO L226 Difference]: Without dead ends: 1324 [2021-03-10 22:20:54,068 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 74.0ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:20:54,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-03-10 22:20:54,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 755. [2021-03-10 22:20:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 2.5450928381962865) internal successors, (1919), 754 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1919 transitions. [2021-03-10 22:20:54,096 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1919 transitions. Word has length 36 [2021-03-10 22:20:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:54,097 INFO L480 AbstractCegarLoop]: Abstraction has 755 states and 1919 transitions. [2021-03-10 22:20:54,097 INFO L481 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) [2021-03-10 22:20:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1919 transitions. [2021-03-10 22:20:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:54,099 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:54,099 INFO L519 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] [2021-03-10 22:20:54,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 22:20:54,099 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:54,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:54,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1141840352, now seen corresponding path program 3 times [2021-03-10 22:20:54,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:54,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049820427] [2021-03-10 22:20:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:54,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049820427] [2021-03-10 22:20:54,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:54,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 22:20:54,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454108754] [2021-03-10 22:20:54,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 22:20:54,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:54,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 22:20:54,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:20:54,135 INFO L87 Difference]: Start difference. First operand 755 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:54,142 INFO L93 Difference]: Finished difference Result 711 states and 1782 transitions. [2021-03-10 22:20:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 22:20:54,142 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 [2021-03-10 22:20:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:54,145 INFO L225 Difference]: With dead ends: 711 [2021-03-10 22:20:54,145 INFO L226 Difference]: Without dead ends: 711 [2021-03-10 22:20:54,146 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:20:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-03-10 22:20:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2021-03-10 22:20:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 2.5098591549295777) internal successors, (1782), 710 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1782 transitions. [2021-03-10 22:20:54,182 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1782 transitions. Word has length 36 [2021-03-10 22:20:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:54,182 INFO L480 AbstractCegarLoop]: Abstraction has 711 states and 1782 transitions. [2021-03-10 22:20:54,183 INFO L481 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) [2021-03-10 22:20:54,183 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1782 transitions. [2021-03-10 22:20:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:54,184 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:54,184 INFO L519 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] [2021-03-10 22:20:54,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 22:20:54,185 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:54,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1806691788, now seen corresponding path program 4 times [2021-03-10 22:20:54,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:54,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613314091] [2021-03-10 22:20:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:54,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613314091] [2021-03-10 22:20:54,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:54,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:54,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426227623] [2021-03-10 22:20:54,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:54,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:54,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:54,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:54,251 INFO L87 Difference]: Start difference. First operand 711 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:54,378 INFO L93 Difference]: Finished difference Result 1037 states and 2486 transitions. [2021-03-10 22:20:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:20:54,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-03-10 22:20:54,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:54,383 INFO L225 Difference]: With dead ends: 1037 [2021-03-10 22:20:54,383 INFO L226 Difference]: Without dead ends: 946 [2021-03-10 22:20:54,384 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:20:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-03-10 22:20:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 725. [2021-03-10 22:20:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 2.4903314917127073) internal successors, (1803), 724 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1803 transitions. [2021-03-10 22:20:54,404 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1803 transitions. Word has length 36 [2021-03-10 22:20:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:54,404 INFO L480 AbstractCegarLoop]: Abstraction has 725 states and 1803 transitions. [2021-03-10 22:20:54,404 INFO L481 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) [2021-03-10 22:20:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1803 transitions. [2021-03-10 22:20:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:54,406 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:54,406 INFO L519 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] [2021-03-10 22:20:54,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 22:20:54,406 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:54,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1002048854, now seen corresponding path program 5 times [2021-03-10 22:20:54,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:54,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375428622] [2021-03-10 22:20:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:54,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375428622] [2021-03-10 22:20:54,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:54,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:20:54,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679556519] [2021-03-10 22:20:54,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:20:54,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:54,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:20:54,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:20:54,497 INFO L87 Difference]: Start difference. First operand 725 states and 1803 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:54,657 INFO L93 Difference]: Finished difference Result 1727 states and 4287 transitions. [2021-03-10 22:20:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:20:54,657 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 [2021-03-10 22:20:54,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:54,664 INFO L225 Difference]: With dead ends: 1727 [2021-03-10 22:20:54,664 INFO L226 Difference]: Without dead ends: 1715 [2021-03-10 22:20:54,664 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 128.7ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:20:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2021-03-10 22:20:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 819. [2021-03-10 22:20:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.488997555012225) internal successors, (2036), 818 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2036 transitions. [2021-03-10 22:20:54,692 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2036 transitions. Word has length 36 [2021-03-10 22:20:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:54,692 INFO L480 AbstractCegarLoop]: Abstraction has 819 states and 2036 transitions. [2021-03-10 22:20:54,693 INFO L481 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) [2021-03-10 22:20:54,693 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2036 transitions. [2021-03-10 22:20:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:54,694 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:54,695 INFO L519 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] [2021-03-10 22:20:54,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 22:20:54,695 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:54,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:54,695 INFO L82 PathProgramCache]: Analyzing trace with hash -2018104662, now seen corresponding path program 6 times [2021-03-10 22:20:54,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:54,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981579921] [2021-03-10 22:20:54,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:54,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981579921] [2021-03-10 22:20:54,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:54,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:20:54,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417467875] [2021-03-10 22:20:54,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:20:54,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:54,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:20:54,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:20:54,796 INFO L87 Difference]: Start difference. First operand 819 states and 2036 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:54,936 INFO L93 Difference]: Finished difference Result 1666 states and 4109 transitions. [2021-03-10 22:20:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:20:54,936 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 [2021-03-10 22:20:54,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:54,942 INFO L225 Difference]: With dead ends: 1666 [2021-03-10 22:20:54,942 INFO L226 Difference]: Without dead ends: 1638 [2021-03-10 22:20:54,942 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:20:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-03-10 22:20:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 799. [2021-03-10 22:20:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 2.4862155388471177) internal successors, (1984), 798 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1984 transitions. [2021-03-10 22:20:54,971 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1984 transitions. Word has length 36 [2021-03-10 22:20:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:54,972 INFO L480 AbstractCegarLoop]: Abstraction has 799 states and 1984 transitions. [2021-03-10 22:20:54,972 INFO L481 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) [2021-03-10 22:20:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1984 transitions. [2021-03-10 22:20:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:54,974 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:54,974 INFO L519 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] [2021-03-10 22:20:54,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 22:20:54,974 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:54,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:54,975 INFO L82 PathProgramCache]: Analyzing trace with hash 888977548, now seen corresponding path program 7 times [2021-03-10 22:20:54,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:54,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493041407] [2021-03-10 22:20:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:55,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493041407] [2021-03-10 22:20:55,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:55,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:20:55,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681645450] [2021-03-10 22:20:55,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:20:55,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:20:55,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:20:55,061 INFO L87 Difference]: Start difference. First operand 799 states and 1984 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:55,215 INFO L93 Difference]: Finished difference Result 1712 states and 4234 transitions. [2021-03-10 22:20:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:20:55,216 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 [2021-03-10 22:20:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:55,223 INFO L225 Difference]: With dead ends: 1712 [2021-03-10 22:20:55,223 INFO L226 Difference]: Without dead ends: 1700 [2021-03-10 22:20:55,223 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:20:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2021-03-10 22:20:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 854. [2021-03-10 22:20:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.4935521688159437) internal successors, (2127), 853 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2127 transitions. [2021-03-10 22:20:55,254 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2127 transitions. Word has length 36 [2021-03-10 22:20:55,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:55,256 INFO L480 AbstractCegarLoop]: Abstraction has 854 states and 2127 transitions. [2021-03-10 22:20:55,256 INFO L481 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) [2021-03-10 22:20:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2127 transitions. [2021-03-10 22:20:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:55,259 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:55,259 INFO L519 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] [2021-03-10 22:20:55,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 22:20:55,260 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:55,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:55,261 INFO L82 PathProgramCache]: Analyzing trace with hash -127078260, now seen corresponding path program 8 times [2021-03-10 22:20:55,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:55,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618587556] [2021-03-10 22:20:55,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:55,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618587556] [2021-03-10 22:20:55,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:55,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:20:55,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123048513] [2021-03-10 22:20:55,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:20:55,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:55,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:20:55,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:20:55,405 INFO L87 Difference]: Start difference. First operand 854 states and 2127 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:55,553 INFO L93 Difference]: Finished difference Result 1651 states and 4056 transitions. [2021-03-10 22:20:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:20:55,554 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 [2021-03-10 22:20:55,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:55,559 INFO L225 Difference]: With dead ends: 1651 [2021-03-10 22:20:55,560 INFO L226 Difference]: Without dead ends: 1627 [2021-03-10 22:20:55,560 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.2ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:20:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-03-10 22:20:55,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 814. [2021-03-10 22:20:55,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 2.4846248462484626) internal successors, (2020), 813 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 2020 transitions. [2021-03-10 22:20:55,582 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 2020 transitions. Word has length 36 [2021-03-10 22:20:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:55,582 INFO L480 AbstractCegarLoop]: Abstraction has 814 states and 2020 transitions. [2021-03-10 22:20:55,583 INFO L481 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) [2021-03-10 22:20:55,583 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 2020 transitions. [2021-03-10 22:20:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:55,584 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:55,584 INFO L519 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] [2021-03-10 22:20:55,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 22:20:55,585 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:55,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:55,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1614595956, now seen corresponding path program 9 times [2021-03-10 22:20:55,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:55,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16111809] [2021-03-10 22:20:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:55,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16111809] [2021-03-10 22:20:55,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:55,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 22:20:55,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600194454] [2021-03-10 22:20:55,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 22:20:55,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:55,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 22:20:55,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:20:55,599 INFO L87 Difference]: Start difference. First operand 814 states and 2020 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:55,605 INFO L93 Difference]: Finished difference Result 790 states and 1933 transitions. [2021-03-10 22:20:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 22:20:55,606 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 [2021-03-10 22:20:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:55,609 INFO L225 Difference]: With dead ends: 790 [2021-03-10 22:20:55,609 INFO L226 Difference]: Without dead ends: 780 [2021-03-10 22:20:55,609 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:20:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-03-10 22:20:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2021-03-10 22:20:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.453145057766367) internal successors, (1911), 779 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1911 transitions. [2021-03-10 22:20:55,626 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1911 transitions. Word has length 36 [2021-03-10 22:20:55,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:55,626 INFO L480 AbstractCegarLoop]: Abstraction has 780 states and 1911 transitions. [2021-03-10 22:20:55,626 INFO L481 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) [2021-03-10 22:20:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1911 transitions. [2021-03-10 22:20:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:55,628 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:55,628 INFO L519 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] [2021-03-10 22:20:55,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 22:20:55,628 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:55,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1296551418, now seen corresponding path program 10 times [2021-03-10 22:20:55,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:55,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571052764] [2021-03-10 22:20:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:55,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571052764] [2021-03-10 22:20:55,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:55,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:55,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087018498] [2021-03-10 22:20:55,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:55,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:55,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:55,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:55,668 INFO L87 Difference]: Start difference. First operand 780 states and 1911 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:55,850 INFO L93 Difference]: Finished difference Result 1251 states and 2962 transitions. [2021-03-10 22:20:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 22:20:55,851 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 [2021-03-10 22:20:55,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:55,856 INFO L225 Difference]: With dead ends: 1251 [2021-03-10 22:20:55,860 INFO L226 Difference]: Without dead ends: 1065 [2021-03-10 22:20:55,862 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 85.8ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:20:55,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-03-10 22:20:55,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 851. [2021-03-10 22:20:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 2.408235294117647) internal successors, (2047), 850 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2047 transitions. [2021-03-10 22:20:55,884 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 2047 transitions. Word has length 36 [2021-03-10 22:20:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:55,884 INFO L480 AbstractCegarLoop]: Abstraction has 851 states and 2047 transitions. [2021-03-10 22:20:55,884 INFO L481 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) [2021-03-10 22:20:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 2047 transitions. [2021-03-10 22:20:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:55,886 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:55,886 INFO L519 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] [2021-03-10 22:20:55,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 22:20:55,886 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:55,887 INFO L82 PathProgramCache]: Analyzing trace with hash 846284964, now seen corresponding path program 11 times [2021-03-10 22:20:55,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:55,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515912572] [2021-03-10 22:20:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:55,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515912572] [2021-03-10 22:20:55,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:55,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:55,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138154298] [2021-03-10 22:20:55,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:55,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:55,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:55,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:55,952 INFO L87 Difference]: Start difference. First operand 851 states and 2047 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:56,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:56,106 INFO L93 Difference]: Finished difference Result 1179 states and 2770 transitions. [2021-03-10 22:20:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 22:20:56,107 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 [2021-03-10 22:20:56,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:56,110 INFO L225 Difference]: With dead ends: 1179 [2021-03-10 22:20:56,110 INFO L226 Difference]: Without dead ends: 1051 [2021-03-10 22:20:56,111 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 82.9ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:20:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-03-10 22:20:56,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 845. [2021-03-10 22:20:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.4004739336492893) internal successors, (2026), 844 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2026 transitions. [2021-03-10 22:20:56,129 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2026 transitions. Word has length 36 [2021-03-10 22:20:56,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:56,129 INFO L480 AbstractCegarLoop]: Abstraction has 845 states and 2026 transitions. [2021-03-10 22:20:56,129 INFO L481 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) [2021-03-10 22:20:56,129 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2026 transitions. [2021-03-10 22:20:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:56,131 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:56,131 INFO L519 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] [2021-03-10 22:20:56,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-10 22:20:56,131 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:56,132 INFO L82 PathProgramCache]: Analyzing trace with hash -911699450, now seen corresponding path program 12 times [2021-03-10 22:20:56,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:56,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149389035] [2021-03-10 22:20:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:56,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149389035] [2021-03-10 22:20:56,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:56,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:56,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510018722] [2021-03-10 22:20:56,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:56,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:56,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:56,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:56,166 INFO L87 Difference]: Start difference. First operand 845 states and 2026 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:56,281 INFO L93 Difference]: Finished difference Result 1124 states and 2638 transitions. [2021-03-10 22:20:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:20:56,281 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 [2021-03-10 22:20:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:56,285 INFO L225 Difference]: With dead ends: 1124 [2021-03-10 22:20:56,285 INFO L226 Difference]: Without dead ends: 934 [2021-03-10 22:20:56,286 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:20:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-03-10 22:20:56,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 760. [2021-03-10 22:20:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 2.399209486166008) internal successors, (1821), 759 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1821 transitions. [2021-03-10 22:20:56,305 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1821 transitions. Word has length 36 [2021-03-10 22:20:56,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:56,305 INFO L480 AbstractCegarLoop]: Abstraction has 760 states and 1821 transitions. [2021-03-10 22:20:56,305 INFO L481 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) [2021-03-10 22:20:56,305 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1821 transitions. [2021-03-10 22:20:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:56,307 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:56,307 INFO L519 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] [2021-03-10 22:20:56,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-10 22:20:56,307 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:56,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:56,307 INFO L82 PathProgramCache]: Analyzing trace with hash -886716842, now seen corresponding path program 13 times [2021-03-10 22:20:56,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:56,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222502787] [2021-03-10 22:20:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:56,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222502787] [2021-03-10 22:20:56,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:56,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:56,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522712928] [2021-03-10 22:20:56,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:56,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:56,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:56,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:56,358 INFO L87 Difference]: Start difference. First operand 760 states and 1821 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:56,520 INFO L93 Difference]: Finished difference Result 1116 states and 2583 transitions. [2021-03-10 22:20:56,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 22:20:56,521 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 [2021-03-10 22:20:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:56,525 INFO L225 Difference]: With dead ends: 1116 [2021-03-10 22:20:56,525 INFO L226 Difference]: Without dead ends: 1017 [2021-03-10 22:20:56,525 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 87.6ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:20:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-03-10 22:20:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 769. [2021-03-10 22:20:56,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 2.40234375) internal successors, (1845), 768 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:56,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1845 transitions. [2021-03-10 22:20:56,542 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1845 transitions. Word has length 36 [2021-03-10 22:20:56,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:56,542 INFO L480 AbstractCegarLoop]: Abstraction has 769 states and 1845 transitions. [2021-03-10 22:20:56,542 INFO L481 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) [2021-03-10 22:20:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1845 transitions. [2021-03-10 22:20:56,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:56,544 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:56,545 INFO L519 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] [2021-03-10 22:20:56,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-10 22:20:56,545 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:56,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1290670540, now seen corresponding path program 14 times [2021-03-10 22:20:56,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:56,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111316536] [2021-03-10 22:20:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:56,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111316536] [2021-03-10 22:20:56,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:56,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:56,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947169523] [2021-03-10 22:20:56,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:56,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:56,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:56,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:56,608 INFO L87 Difference]: Start difference. First operand 769 states and 1845 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:56,760 INFO L93 Difference]: Finished difference Result 1108 states and 2570 transitions. [2021-03-10 22:20:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 22:20:56,761 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 [2021-03-10 22:20:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:56,766 INFO L225 Difference]: With dead ends: 1108 [2021-03-10 22:20:56,766 INFO L226 Difference]: Without dead ends: 994 [2021-03-10 22:20:56,767 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:20:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-03-10 22:20:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 826. [2021-03-10 22:20:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.353939393939394) internal successors, (1942), 825 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1942 transitions. [2021-03-10 22:20:56,785 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1942 transitions. Word has length 36 [2021-03-10 22:20:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:56,786 INFO L480 AbstractCegarLoop]: Abstraction has 826 states and 1942 transitions. [2021-03-10 22:20:56,786 INFO L481 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) [2021-03-10 22:20:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1942 transitions. [2021-03-10 22:20:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:56,788 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:56,788 INFO L519 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] [2021-03-10 22:20:56,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-10 22:20:56,788 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:56,789 INFO L82 PathProgramCache]: Analyzing trace with hash 43920790, now seen corresponding path program 15 times [2021-03-10 22:20:56,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:56,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9523212] [2021-03-10 22:20:56,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:56,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9523212] [2021-03-10 22:20:56,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:56,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:56,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698405985] [2021-03-10 22:20:56,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:56,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:56,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:56,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:56,827 INFO L87 Difference]: Start difference. First operand 826 states and 1942 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:56,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:56,931 INFO L93 Difference]: Finished difference Result 1089 states and 2514 transitions. [2021-03-10 22:20:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:20:56,931 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 [2021-03-10 22:20:56,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:56,935 INFO L225 Difference]: With dead ends: 1089 [2021-03-10 22:20:56,935 INFO L226 Difference]: Without dead ends: 918 [2021-03-10 22:20:56,937 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:20:56,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-03-10 22:20:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 751. [2021-03-10 22:20:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 2.3613333333333335) internal successors, (1771), 750 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1771 transitions. [2021-03-10 22:20:56,955 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1771 transitions. Word has length 36 [2021-03-10 22:20:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:56,955 INFO L480 AbstractCegarLoop]: Abstraction has 751 states and 1771 transitions. [2021-03-10 22:20:56,955 INFO L481 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) [2021-03-10 22:20:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1771 transitions. [2021-03-10 22:20:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:56,957 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:56,957 INFO L519 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] [2021-03-10 22:20:56,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-10 22:20:56,957 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:56,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:56,957 INFO L82 PathProgramCache]: Analyzing trace with hash 658153170, now seen corresponding path program 16 times [2021-03-10 22:20:56,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:56,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949938250] [2021-03-10 22:20:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:57,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949938250] [2021-03-10 22:20:57,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:57,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:20:57,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393238664] [2021-03-10 22:20:57,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:20:57,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:57,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:20:57,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:20:57,007 INFO L87 Difference]: Start difference. First operand 751 states and 1771 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:57,158 INFO L93 Difference]: Finished difference Result 984 states and 2257 transitions. [2021-03-10 22:20:57,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 22:20:57,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-03-10 22:20:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:57,175 INFO L225 Difference]: With dead ends: 984 [2021-03-10 22:20:57,176 INFO L226 Difference]: Without dead ends: 893 [2021-03-10 22:20:57,176 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:20:57,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-03-10 22:20:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 687. [2021-03-10 22:20:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.3658892128279883) internal successors, (1623), 686 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1623 transitions. [2021-03-10 22:20:57,194 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1623 transitions. Word has length 36 [2021-03-10 22:20:57,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:57,194 INFO L480 AbstractCegarLoop]: Abstraction has 687 states and 1623 transitions. [2021-03-10 22:20:57,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1623 transitions. [2021-03-10 22:20:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:57,196 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:57,196 INFO L519 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] [2021-03-10 22:20:57,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-10 22:20:57,196 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:57,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:57,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1493977744, now seen corresponding path program 17 times [2021-03-10 22:20:57,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:57,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334872283] [2021-03-10 22:20:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:57,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334872283] [2021-03-10 22:20:57,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:57,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:57,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617774382] [2021-03-10 22:20:57,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:57,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:57,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:57,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:57,249 INFO L87 Difference]: Start difference. First operand 687 states and 1623 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:57,409 INFO L93 Difference]: Finished difference Result 1072 states and 2458 transitions. [2021-03-10 22:20:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 22:20:57,410 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 [2021-03-10 22:20:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:57,412 INFO L225 Difference]: With dead ends: 1072 [2021-03-10 22:20:57,412 INFO L226 Difference]: Without dead ends: 1004 [2021-03-10 22:20:57,412 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:57,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-03-10 22:20:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 747. [2021-03-10 22:20:57,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 2.312332439678284) internal successors, (1725), 746 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1725 transitions. [2021-03-10 22:20:57,426 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1725 transitions. Word has length 36 [2021-03-10 22:20:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:57,426 INFO L480 AbstractCegarLoop]: Abstraction has 747 states and 1725 transitions. [2021-03-10 22:20:57,426 INFO L481 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) [2021-03-10 22:20:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1725 transitions. [2021-03-10 22:20:57,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:57,428 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:57,428 INFO L519 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] [2021-03-10 22:20:57,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-10 22:20:57,428 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:57,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1043005138, now seen corresponding path program 18 times [2021-03-10 22:20:57,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:57,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042062632] [2021-03-10 22:20:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:57,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042062632] [2021-03-10 22:20:57,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:57,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:57,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845861360] [2021-03-10 22:20:57,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:57,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:57,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:57,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:57,464 INFO L87 Difference]: Start difference. First operand 747 states and 1725 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:57,617 INFO L93 Difference]: Finished difference Result 941 states and 2169 transitions. [2021-03-10 22:20:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 22:20:57,618 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 [2021-03-10 22:20:57,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:57,619 INFO L225 Difference]: With dead ends: 941 [2021-03-10 22:20:57,620 INFO L226 Difference]: Without dead ends: 787 [2021-03-10 22:20:57,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 68.4ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:20:57,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-03-10 22:20:57,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 685. [2021-03-10 22:20:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 2.3084795321637426) internal successors, (1579), 684 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1579 transitions. [2021-03-10 22:20:57,632 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1579 transitions. Word has length 36 [2021-03-10 22:20:57,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:57,633 INFO L480 AbstractCegarLoop]: Abstraction has 685 states and 1579 transitions. [2021-03-10 22:20:57,633 INFO L481 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) [2021-03-10 22:20:57,633 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1579 transitions. [2021-03-10 22:20:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:57,634 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:57,634 INFO L519 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] [2021-03-10 22:20:57,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-10 22:20:57,634 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:57,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:57,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1975445742, now seen corresponding path program 19 times [2021-03-10 22:20:57,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:57,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569642067] [2021-03-10 22:20:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:57,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569642067] [2021-03-10 22:20:57,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:57,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:57,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951710814] [2021-03-10 22:20:57,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:57,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:57,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:57,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:57,667 INFO L87 Difference]: Start difference. First operand 685 states and 1579 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:57,807 INFO L93 Difference]: Finished difference Result 855 states and 1962 transitions. [2021-03-10 22:20:57,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 22:20:57,807 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 [2021-03-10 22:20:57,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:57,809 INFO L225 Difference]: With dead ends: 855 [2021-03-10 22:20:57,809 INFO L226 Difference]: Without dead ends: 722 [2021-03-10 22:20:57,809 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 74.6ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:20:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-03-10 22:20:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 625. [2021-03-10 22:20:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.315705128205128) internal successors, (1445), 624 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1445 transitions. [2021-03-10 22:20:57,820 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1445 transitions. Word has length 36 [2021-03-10 22:20:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:57,820 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1445 transitions. [2021-03-10 22:20:57,820 INFO L481 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) [2021-03-10 22:20:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1445 transitions. [2021-03-10 22:20:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:57,821 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:57,821 INFO L519 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] [2021-03-10 22:20:57,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-10 22:20:57,821 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:57,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:57,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1605414732, now seen corresponding path program 20 times [2021-03-10 22:20:57,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:57,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669155143] [2021-03-10 22:20:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:57,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669155143] [2021-03-10 22:20:57,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:57,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:20:57,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227460607] [2021-03-10 22:20:57,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:20:57,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:57,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:20:57,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:20:57,859 INFO L87 Difference]: Start difference. First operand 625 states and 1445 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:58,021 INFO L93 Difference]: Finished difference Result 810 states and 1861 transitions. [2021-03-10 22:20:58,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:20:58,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-03-10 22:20:58,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:58,023 INFO L225 Difference]: With dead ends: 810 [2021-03-10 22:20:58,023 INFO L226 Difference]: Without dead ends: 761 [2021-03-10 22:20:58,024 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:20:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-03-10 22:20:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 631. [2021-03-10 22:20:58,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 2.3142857142857145) internal successors, (1458), 630 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1458 transitions. [2021-03-10 22:20:58,047 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1458 transitions. Word has length 36 [2021-03-10 22:20:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:58,047 INFO L480 AbstractCegarLoop]: Abstraction has 631 states and 1458 transitions. [2021-03-10 22:20:58,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,047 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1458 transitions. [2021-03-10 22:20:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:58,049 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:58,049 INFO L519 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] [2021-03-10 22:20:58,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-10 22:20:58,049 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:58,049 INFO L82 PathProgramCache]: Analyzing trace with hash 578791080, now seen corresponding path program 21 times [2021-03-10 22:20:58,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:58,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708913240] [2021-03-10 22:20:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:58,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708913240] [2021-03-10 22:20:58,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:58,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:58,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99081727] [2021-03-10 22:20:58,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:58,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:58,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:58,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:58,082 INFO L87 Difference]: Start difference. First operand 631 states and 1458 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:58,162 INFO L93 Difference]: Finished difference Result 760 states and 1753 transitions. [2021-03-10 22:20:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:20:58,163 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 [2021-03-10 22:20:58,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:58,164 INFO L225 Difference]: With dead ends: 760 [2021-03-10 22:20:58,164 INFO L226 Difference]: Without dead ends: 588 [2021-03-10 22:20:58,164 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:20:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-10 22:20:58,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 521. [2021-03-10 22:20:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.3134615384615387) internal successors, (1203), 520 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1203 transitions. [2021-03-10 22:20:58,175 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1203 transitions. Word has length 36 [2021-03-10 22:20:58,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:58,175 INFO L480 AbstractCegarLoop]: Abstraction has 521 states and 1203 transitions. [2021-03-10 22:20:58,175 INFO L481 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) [2021-03-10 22:20:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1203 transitions. [2021-03-10 22:20:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:58,177 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:58,177 INFO L519 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] [2021-03-10 22:20:58,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-10 22:20:58,177 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:58,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1889566906, now seen corresponding path program 22 times [2021-03-10 22:20:58,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:58,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288717328] [2021-03-10 22:20:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:58,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288717328] [2021-03-10 22:20:58,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:58,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:20:58,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722743292] [2021-03-10 22:20:58,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:20:58,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:58,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:20:58,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:20:58,254 INFO L87 Difference]: Start difference. First operand 521 states and 1203 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:58,403 INFO L93 Difference]: Finished difference Result 699 states and 1564 transitions. [2021-03-10 22:20:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 22:20:58,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-03-10 22:20:58,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:58,405 INFO L225 Difference]: With dead ends: 699 [2021-03-10 22:20:58,405 INFO L226 Difference]: Without dead ends: 598 [2021-03-10 22:20:58,406 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 104.6ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:20:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-10 22:20:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 434. [2021-03-10 22:20:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.325635103926097) internal successors, (1007), 433 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1007 transitions. [2021-03-10 22:20:58,426 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1007 transitions. Word has length 36 [2021-03-10 22:20:58,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:58,426 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 1007 transitions. [2021-03-10 22:20:58,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1007 transitions. [2021-03-10 22:20:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:58,427 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:58,427 INFO L519 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] [2021-03-10 22:20:58,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-10 22:20:58,428 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1799608796, now seen corresponding path program 23 times [2021-03-10 22:20:58,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:58,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407297460] [2021-03-10 22:20:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:58,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407297460] [2021-03-10 22:20:58,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:58,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:20:58,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299096627] [2021-03-10 22:20:58,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:20:58,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:58,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:20:58,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:20:58,469 INFO L87 Difference]: Start difference. First operand 434 states and 1007 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:58,608 INFO L93 Difference]: Finished difference Result 598 states and 1372 transitions. [2021-03-10 22:20:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:20:58,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-03-10 22:20:58,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:58,609 INFO L225 Difference]: With dead ends: 598 [2021-03-10 22:20:58,609 INFO L226 Difference]: Without dead ends: 546 [2021-03-10 22:20:58,609 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:20:58,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-10 22:20:58,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 441. [2021-03-10 22:20:58,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 2.3227272727272728) internal successors, (1022), 440 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1022 transitions. [2021-03-10 22:20:58,620 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1022 transitions. Word has length 36 [2021-03-10 22:20:58,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:58,620 INFO L480 AbstractCegarLoop]: Abstraction has 441 states and 1022 transitions. [2021-03-10 22:20:58,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1022 transitions. [2021-03-10 22:20:58,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:58,621 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:58,621 INFO L519 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] [2021-03-10 22:20:58,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-10 22:20:58,621 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:58,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:58,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1002873044, now seen corresponding path program 24 times [2021-03-10 22:20:58,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:58,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128623575] [2021-03-10 22:20:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:58,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128623575] [2021-03-10 22:20:58,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:58,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:20:58,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71385151] [2021-03-10 22:20:58,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:58,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:58,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:58,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:58,658 INFO L87 Difference]: Start difference. First operand 441 states and 1022 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:58,723 INFO L93 Difference]: Finished difference Result 542 states and 1249 transitions. [2021-03-10 22:20:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:20:58,723 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 [2021-03-10 22:20:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:58,724 INFO L225 Difference]: With dead ends: 542 [2021-03-10 22:20:58,724 INFO L226 Difference]: Without dead ends: 381 [2021-03-10 22:20:58,724 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:20:58,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-03-10 22:20:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 342. [2021-03-10 22:20:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.346041055718475) internal successors, (800), 341 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 800 transitions. [2021-03-10 22:20:58,730 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 800 transitions. Word has length 36 [2021-03-10 22:20:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:58,730 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 800 transitions. [2021-03-10 22:20:58,730 INFO L481 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) [2021-03-10 22:20:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 800 transitions. [2021-03-10 22:20:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:58,731 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:58,731 INFO L519 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] [2021-03-10 22:20:58,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-10 22:20:58,731 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:58,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:58,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1626416734, now seen corresponding path program 25 times [2021-03-10 22:20:58,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:58,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985301297] [2021-03-10 22:20:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:58,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985301297] [2021-03-10 22:20:58,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:58,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:20:58,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520302809] [2021-03-10 22:20:58,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:20:58,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:58,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:20:58,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:20:58,812 INFO L87 Difference]: Start difference. First operand 342 states and 800 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:58,911 INFO L93 Difference]: Finished difference Result 452 states and 1058 transitions. [2021-03-10 22:20:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:20:58,911 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 [2021-03-10 22:20:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:58,912 INFO L225 Difference]: With dead ends: 452 [2021-03-10 22:20:58,912 INFO L226 Difference]: Without dead ends: 432 [2021-03-10 22:20:58,912 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:20:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-03-10 22:20:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 377. [2021-03-10 22:20:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3351063829787235) internal successors, (878), 376 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 878 transitions. [2021-03-10 22:20:58,920 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 878 transitions. Word has length 36 [2021-03-10 22:20:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:58,920 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 878 transitions. [2021-03-10 22:20:58,920 INFO L481 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) [2021-03-10 22:20:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 878 transitions. [2021-03-10 22:20:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:58,923 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:58,923 INFO L519 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] [2021-03-10 22:20:58,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-10 22:20:58,923 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:58,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:58,923 INFO L82 PathProgramCache]: Analyzing trace with hash 610360926, now seen corresponding path program 26 times [2021-03-10 22:20:58,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:58,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839715920] [2021-03-10 22:20:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:58,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839715920] [2021-03-10 22:20:58,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:58,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:20:58,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250437703] [2021-03-10 22:20:58,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:20:58,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:58,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:20:58,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:20:58,983 INFO L87 Difference]: Start difference. First operand 377 states and 878 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:59,071 INFO L93 Difference]: Finished difference Result 397 states and 914 transitions. [2021-03-10 22:20:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:20:59,072 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 [2021-03-10 22:20:59,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:59,072 INFO L225 Difference]: With dead ends: 397 [2021-03-10 22:20:59,072 INFO L226 Difference]: Without dead ends: 332 [2021-03-10 22:20:59,073 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:20:59,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-03-10 22:20:59,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-03-10 22:20:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.3323262839879155) internal successors, (772), 331 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 772 transitions. [2021-03-10 22:20:59,078 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 772 transitions. Word has length 36 [2021-03-10 22:20:59,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:59,078 INFO L480 AbstractCegarLoop]: Abstraction has 332 states and 772 transitions. [2021-03-10 22:20:59,079 INFO L481 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) [2021-03-10 22:20:59,079 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 772 transitions. [2021-03-10 22:20:59,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:59,082 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:59,082 INFO L519 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] [2021-03-10 22:20:59,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-10 22:20:59,082 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:59,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:59,082 INFO L82 PathProgramCache]: Analyzing trace with hash -777524160, now seen corresponding path program 27 times [2021-03-10 22:20:59,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:59,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192527875] [2021-03-10 22:20:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:59,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192527875] [2021-03-10 22:20:59,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:59,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:20:59,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345677733] [2021-03-10 22:20:59,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:20:59,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:59,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:20:59,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:20:59,150 INFO L87 Difference]: Start difference. First operand 332 states and 772 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:59,242 INFO L93 Difference]: Finished difference Result 472 states and 1099 transitions. [2021-03-10 22:20:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:20:59,242 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 [2021-03-10 22:20:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:59,243 INFO L225 Difference]: With dead ends: 472 [2021-03-10 22:20:59,243 INFO L226 Difference]: Without dead ends: 452 [2021-03-10 22:20:59,243 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:20:59,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-03-10 22:20:59,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 377. [2021-03-10 22:20:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3218085106382977) internal successors, (873), 376 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 873 transitions. [2021-03-10 22:20:59,250 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 873 transitions. Word has length 36 [2021-03-10 22:20:59,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:59,250 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 873 transitions. [2021-03-10 22:20:59,250 INFO L481 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) [2021-03-10 22:20:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 873 transitions. [2021-03-10 22:20:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:59,251 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:59,251 INFO L519 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] [2021-03-10 22:20:59,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-10 22:20:59,251 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:59,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:59,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1793579968, now seen corresponding path program 28 times [2021-03-10 22:20:59,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:59,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368418792] [2021-03-10 22:20:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:59,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368418792] [2021-03-10 22:20:59,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:59,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:20:59,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102662491] [2021-03-10 22:20:59,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:20:59,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:59,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:20:59,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:20:59,308 INFO L87 Difference]: Start difference. First operand 377 states and 873 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:59,403 INFO L93 Difference]: Finished difference Result 397 states and 909 transitions. [2021-03-10 22:20:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:20:59,405 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 [2021-03-10 22:20:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:59,405 INFO L225 Difference]: With dead ends: 397 [2021-03-10 22:20:59,405 INFO L226 Difference]: Without dead ends: 327 [2021-03-10 22:20:59,406 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:20:59,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-03-10 22:20:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-03-10 22:20:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 2.3251533742331287) internal successors, (758), 326 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 758 transitions. [2021-03-10 22:20:59,411 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 758 transitions. Word has length 36 [2021-03-10 22:20:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:59,411 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 758 transitions. [2021-03-10 22:20:59,411 INFO L481 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) [2021-03-10 22:20:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 758 transitions. [2021-03-10 22:20:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 22:20:59,412 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:59,412 INFO L519 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] [2021-03-10 22:20:59,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-10 22:20:59,412 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:59,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:59,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2007695822, now seen corresponding path program 29 times [2021-03-10 22:20:59,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:59,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501660036] [2021-03-10 22:20:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:59,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501660036] [2021-03-10 22:20:59,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:59,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:20:59,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239831553] [2021-03-10 22:20:59,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:20:59,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:59,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:20:59,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:20:59,447 INFO L87 Difference]: Start difference. First operand 327 states and 758 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:59,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:59,485 INFO L93 Difference]: Finished difference Result 189 states and 426 transitions. [2021-03-10 22:20:59,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:20:59,486 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 [2021-03-10 22:20:59,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:59,486 INFO L225 Difference]: With dead ends: 189 [2021-03-10 22:20:59,486 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 22:20:59,487 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:20:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 22:20:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 22:20:59,487 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) [2021-03-10 22:20:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 22:20:59,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-03-10 22:20:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:59,488 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 22:20:59,488 INFO L481 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) [2021-03-10 22:20:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 22:20:59,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 22:20:59,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-10 22:20:59,492 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 10:20:59 BasicIcfg [2021-03-10 22:20:59,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 22:20:59,493 INFO L168 Benchmark]: Toolchain (without parser) took 6851.19 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 237.1 MB in the beginning and 377.6 MB in the end (delta: -140.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:20:59,493 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.1 MB in the end (delta: 104.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:20:59,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.42 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:20:59,493 INFO L168 Benchmark]: Boogie Preprocessor took 17.32 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.2 MB in the end (delta: 835.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 22:20:59,493 INFO L168 Benchmark]: RCFGBuilder took 240.22 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 238.4 MB in the end (delta: -4.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. [2021-03-10 22:20:59,494 INFO L168 Benchmark]: TraceAbstraction took 6558.53 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 238.3 MB in the beginning and 377.6 MB in the end (delta: -139.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.0 GB. [2021-03-10 22:20:59,494 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 0.14 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.1 MB in the end (delta: 104.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.42 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.32 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.2 MB in the end (delta: 835.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 240.22 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 238.4 MB in the end (delta: -4.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6558.53 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 238.3 MB in the beginning and 377.6 MB in the end (delta: -139.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6457.1ms, OverallIterations: 29, TraceHistogramMax: 1, EmptinessCheckTime: 68.1ms, AutomataDifference: 3753.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 123.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2558 SDtfs, 3423 SDslu, 8384 SDs, 0 SdLazy, 2986 SolverSat, 373 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1298.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 2344.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=854occurred in iteration=7, InterpolantAutomatonStates: 337, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 553.8ms AutomataMinimizationTime, 29 MinimizatonAttempts, 6894 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 47.0ms SsaConstructionTime, 151.1ms SatisfiabilityAnalysisTime, 1492.2ms InterpolantComputationTime, 1044 NumberOfCodeBlocks, 1044 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1015 ConstructedInterpolants, 0 QuantifiedInterpolants, 3663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...