/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 20:27:09,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 20:27:09,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 20:27:09,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 20:27:09,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-12 20:27:09,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 20:27:09,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 20:27:09,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 20:27:09,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 20:27:09,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 20:27:09,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 20:27:09,856 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 20:27:09,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 20:27:09,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 20:27:09,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 20:27:09,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 20:27:09,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 20:27:09,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 20:27:09,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 20:27:09,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 20:27:09,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 20:27:09,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 20:27:09,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 20:27:09,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 20:27:09,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 20:27:09,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 20:27:09,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 20:27:09,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 20:27:09,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 20:27:09,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 20:27:09,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 20:27:09,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 20:27:09,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 20:27:09,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 20:27:09,873 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 20:27:09,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 20:27:09,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 20:27:10,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 20:27:10,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 20:27:10,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 20:27:10,149 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-12 20:27:10,151 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-12 20:27:10,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-06-12 20:27:10,152 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-06-12 20:27:10,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 20:27:10,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-12 20:27:10,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 20:27:10,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 20:27:10,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 20:27:10,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/1) ... [2021-06-12 20:27:10,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/1) ... [2021-06-12 20:27:10,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 20:27:10,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 20:27:10,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 20:27:10,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 20:27:10,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/1) ... [2021-06-12 20:27:10,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/1) ... [2021-06-12 20:27:10,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/1) ... [2021-06-12 20:27:10,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/1) ... [2021-06-12 20:27:10,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/1) ... [2021-06-12 20:27:10,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/1) ... [2021-06-12 20:27:10,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/1) ... [2021-06-12 20:27:10,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 20:27:10,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 20:27:10,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 20:27:10,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 20:27:10,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 20:27:10,273 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-12 20:27:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-12 20:27:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-12 20:27:10,273 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-12 20:27:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-12 20:27:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-12 20:27:10,273 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-12 20:27:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 20:27:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 20:27:10,273 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-12 20:27:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-12 20:27:10,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-12 20:27:10,274 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 20:27:10,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 20:27:10,461 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-12 20:27:10,462 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 08:27:10 BoogieIcfgContainer [2021-06-12 20:27:10,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 20:27:10,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 20:27:10,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 20:27:10,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 20:27:10,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:27:10" (1/2) ... [2021-06-12 20:27:10,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d0544 and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 08:27:10, skipping insertion in model container [2021-06-12 20:27:10,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 08:27:10" (2/2) ... [2021-06-12 20:27:10,467 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-06-12 20:27:10,471 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 20:27:10,471 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 20:27:10,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 20:27:10,472 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 20:27:10,529 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-12 20:27:10,547 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 20:27:10,572 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 20:27:10,572 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 20:27:10,572 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 20:27:10,572 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 20:27:10,572 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 20:27:10,572 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 20:27:10,572 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 20:27:10,573 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 20:27:10,579 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 41 transitions, 106 flow [2021-06-12 20:27:10,632 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:10,659 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:10,660 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:10,660 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:10,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:10,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1721712362, now seen corresponding path program 1 times [2021-06-12 20:27:10,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:10,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634064237] [2021-06-12 20:27:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:10,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:10,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634064237] [2021-06-12 20:27:10,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634064237] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:10,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:10,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:10,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293243296] [2021-06-12 20:27:10,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:10,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:10,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:10,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:10,891 INFO L87 Difference]: Start difference. First operand has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:11,070 INFO L93 Difference]: Finished difference Result 998 states and 2445 transitions. [2021-06-12 20:27:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:27:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:11,088 INFO L225 Difference]: With dead ends: 998 [2021-06-12 20:27:11,088 INFO L226 Difference]: Without dead ends: 923 [2021-06-12 20:27:11,089 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 20:27:11,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-06-12 20:27:11,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 687. [2021-06-12 20:27:11,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.564139941690962) internal successors, (1759), 686 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1759 transitions. [2021-06-12 20:27:11,167 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1759 transitions. Word has length 36 [2021-06-12 20:27:11,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:11,167 INFO L482 AbstractCegarLoop]: Abstraction has 687 states and 1759 transitions. [2021-06-12 20:27:11,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1759 transitions. [2021-06-12 20:27:11,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:11,170 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:11,170 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:11,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 20:27:11,171 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:11,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:11,174 INFO L82 PathProgramCache]: Analyzing trace with hash 828952404, now seen corresponding path program 2 times [2021-06-12 20:27:11,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:11,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358617709] [2021-06-12 20:27:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:11,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:11,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358617709] [2021-06-12 20:27:11,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358617709] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:11,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:11,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:27:11,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671381332] [2021-06-12 20:27:11,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:11,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:11,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:11,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:11,270 INFO L87 Difference]: Start difference. First operand 687 states and 1759 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:11,354 INFO L93 Difference]: Finished difference Result 1384 states and 3517 transitions. [2021-06-12 20:27:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:27:11,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:11,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:11,359 INFO L225 Difference]: With dead ends: 1384 [2021-06-12 20:27:11,359 INFO L226 Difference]: Without dead ends: 1324 [2021-06-12 20:27:11,360 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-06-12 20:27:11,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-06-12 20:27:11,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 755. [2021-06-12 20:27:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 2.5450928381962865) internal successors, (1919), 754 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1919 transitions. [2021-06-12 20:27:11,379 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1919 transitions. Word has length 36 [2021-06-12 20:27:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:11,379 INFO L482 AbstractCegarLoop]: Abstraction has 755 states and 1919 transitions. [2021-06-12 20:27:11,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1919 transitions. [2021-06-12 20:27:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:11,381 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:11,382 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:11,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 20:27:11,382 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:11,384 INFO L82 PathProgramCache]: Analyzing trace with hash -842125034, now seen corresponding path program 3 times [2021-06-12 20:27:11,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:11,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610436274] [2021-06-12 20:27:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:11,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:11,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610436274] [2021-06-12 20:27:11,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610436274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:11,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:11,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:11,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160252819] [2021-06-12 20:27:11,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:11,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:11,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:11,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:11,438 INFO L87 Difference]: Start difference. First operand 755 states and 1919 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:11,583 INFO L93 Difference]: Finished difference Result 1230 states and 2984 transitions. [2021-06-12 20:27:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 20:27:11,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:11,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:11,588 INFO L225 Difference]: With dead ends: 1230 [2021-06-12 20:27:11,590 INFO L226 Difference]: Without dead ends: 1044 [2021-06-12 20:27:11,591 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:27:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-06-12 20:27:11,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 826. [2021-06-12 20:27:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.493333333333333) internal successors, (2057), 825 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 2057 transitions. [2021-06-12 20:27:11,613 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 2057 transitions. Word has length 36 [2021-06-12 20:27:11,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:11,613 INFO L482 AbstractCegarLoop]: Abstraction has 826 states and 2057 transitions. [2021-06-12 20:27:11,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,614 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 2057 transitions. [2021-06-12 20:27:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:11,616 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:11,616 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:11,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 20:27:11,617 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:11,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:11,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1087553612, now seen corresponding path program 4 times [2021-06-12 20:27:11,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:11,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297932505] [2021-06-12 20:27:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:11,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:11,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297932505] [2021-06-12 20:27:11,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297932505] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:11,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:11,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:11,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146787984] [2021-06-12 20:27:11,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:11,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:11,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:11,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:11,711 INFO L87 Difference]: Start difference. First operand 826 states and 2057 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:11,848 INFO L93 Difference]: Finished difference Result 1148 states and 2767 transitions. [2021-06-12 20:27:11,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-12 20:27:11,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:11,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:11,851 INFO L225 Difference]: With dead ends: 1148 [2021-06-12 20:27:11,851 INFO L226 Difference]: Without dead ends: 1024 [2021-06-12 20:27:11,852 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:27:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-06-12 20:27:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 822. [2021-06-12 20:27:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 2.4859926918392206) internal successors, (2041), 821 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 2041 transitions. [2021-06-12 20:27:11,869 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 2041 transitions. Word has length 36 [2021-06-12 20:27:11,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:11,869 INFO L482 AbstractCegarLoop]: Abstraction has 822 states and 2041 transitions. [2021-06-12 20:27:11,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 2041 transitions. [2021-06-12 20:27:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:11,871 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:11,871 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:11,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 20:27:11,871 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:11,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:11,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1449429270, now seen corresponding path program 5 times [2021-06-12 20:27:11,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:11,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738490232] [2021-06-12 20:27:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:11,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:11,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738490232] [2021-06-12 20:27:11,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738490232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:11,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:11,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:11,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286706454] [2021-06-12 20:27:11,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:11,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:11,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:11,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:11,911 INFO L87 Difference]: Start difference. First operand 822 states and 2041 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:12,022 INFO L93 Difference]: Finished difference Result 1097 states and 2645 transitions. [2021-06-12 20:27:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 20:27:12,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:12,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:12,025 INFO L225 Difference]: With dead ends: 1097 [2021-06-12 20:27:12,026 INFO L226 Difference]: Without dead ends: 908 [2021-06-12 20:27:12,026 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 20:27:12,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-06-12 20:27:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 736. [2021-06-12 20:27:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 2.491156462585034) internal successors, (1831), 735 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1831 transitions. [2021-06-12 20:27:12,041 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1831 transitions. Word has length 36 [2021-06-12 20:27:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:12,041 INFO L482 AbstractCegarLoop]: Abstraction has 736 states and 1831 transitions. [2021-06-12 20:27:12,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1831 transitions. [2021-06-12 20:27:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:12,042 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:12,042 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:12,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 20:27:12,042 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:12,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:12,043 INFO L82 PathProgramCache]: Analyzing trace with hash 798543570, now seen corresponding path program 6 times [2021-06-12 20:27:12,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:12,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106313151] [2021-06-12 20:27:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:12,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:12,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106313151] [2021-06-12 20:27:12,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106313151] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:12,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:12,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:27:12,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761353374] [2021-06-12 20:27:12,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:27:12,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:12,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:27:12,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:27:12,085 INFO L87 Difference]: Start difference. First operand 736 states and 1831 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:12,267 INFO L93 Difference]: Finished difference Result 1141 states and 2693 transitions. [2021-06-12 20:27:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 20:27:12,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:12,270 INFO L225 Difference]: With dead ends: 1141 [2021-06-12 20:27:12,270 INFO L226 Difference]: Without dead ends: 1011 [2021-06-12 20:27:12,271 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-06-12 20:27:12,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-06-12 20:27:12,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 778. [2021-06-12 20:27:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 2.4337194337194337) internal successors, (1891), 777 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1891 transitions. [2021-06-12 20:27:12,284 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1891 transitions. Word has length 36 [2021-06-12 20:27:12,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:12,284 INFO L482 AbstractCegarLoop]: Abstraction has 778 states and 1891 transitions. [2021-06-12 20:27:12,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1891 transitions. [2021-06-12 20:27:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:12,285 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:12,285 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:12,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 20:27:12,285 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:12,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:12,286 INFO L82 PathProgramCache]: Analyzing trace with hash 553114992, now seen corresponding path program 7 times [2021-06-12 20:27:12,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:12,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411624245] [2021-06-12 20:27:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:12,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:12,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411624245] [2021-06-12 20:27:12,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411624245] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:12,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:12,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:12,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179955434] [2021-06-12 20:27:12,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:12,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:12,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:12,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:12,317 INFO L87 Difference]: Start difference. First operand 778 states and 1891 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:12,462 INFO L93 Difference]: Finished difference Result 1138 states and 2685 transitions. [2021-06-12 20:27:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 20:27:12,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:12,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:12,466 INFO L225 Difference]: With dead ends: 1138 [2021-06-12 20:27:12,466 INFO L226 Difference]: Without dead ends: 1070 [2021-06-12 20:27:12,466 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-06-12 20:27:12,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-06-12 20:27:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 774. [2021-06-12 20:27:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 2.425614489003881) internal successors, (1875), 773 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1875 transitions. [2021-06-12 20:27:12,480 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1875 transitions. Word has length 36 [2021-06-12 20:27:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:12,480 INFO L482 AbstractCegarLoop]: Abstraction has 774 states and 1875 transitions. [2021-06-12 20:27:12,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1875 transitions. [2021-06-12 20:27:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:12,481 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:12,481 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:12,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 20:27:12,481 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:12,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:12,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1204869422, now seen corresponding path program 8 times [2021-06-12 20:27:12,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:12,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160699716] [2021-06-12 20:27:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:12,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:12,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160699716] [2021-06-12 20:27:12,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160699716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:12,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:12,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:12,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247988937] [2021-06-12 20:27:12,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:12,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:12,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:12,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:12,520 INFO L87 Difference]: Start difference. First operand 774 states and 1875 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:12,644 INFO L93 Difference]: Finished difference Result 968 states and 2319 transitions. [2021-06-12 20:27:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-12 20:27:12,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:12,648 INFO L225 Difference]: With dead ends: 968 [2021-06-12 20:27:12,648 INFO L226 Difference]: Without dead ends: 814 [2021-06-12 20:27:12,648 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 67.1ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:27:12,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-06-12 20:27:12,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 710. [2021-06-12 20:27:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 2.431593794076164) internal successors, (1724), 709 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1724 transitions. [2021-06-12 20:27:12,662 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1724 transitions. Word has length 36 [2021-06-12 20:27:12,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:12,662 INFO L482 AbstractCegarLoop]: Abstraction has 710 states and 1724 transitions. [2021-06-12 20:27:12,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,662 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1724 transitions. [2021-06-12 20:27:12,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:12,665 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:12,665 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:12,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 20:27:12,665 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:12,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:12,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1391303088, now seen corresponding path program 9 times [2021-06-12 20:27:12,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:12,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662752789] [2021-06-12 20:27:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:12,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:12,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662752789] [2021-06-12 20:27:12,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662752789] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:12,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:12,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:12,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607807309] [2021-06-12 20:27:12,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:12,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:12,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:12,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:12,724 INFO L87 Difference]: Start difference. First operand 710 states and 1724 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:12,827 INFO L93 Difference]: Finished difference Result 966 states and 2274 transitions. [2021-06-12 20:27:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 20:27:12,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:12,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:12,830 INFO L225 Difference]: With dead ends: 966 [2021-06-12 20:27:12,830 INFO L226 Difference]: Without dead ends: 811 [2021-06-12 20:27:12,830 INFO L728 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 [2021-06-12 20:27:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-06-12 20:27:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 667. [2021-06-12 20:27:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 666 states have (on average 2.4084084084084085) internal successors, (1604), 666 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1604 transitions. [2021-06-12 20:27:12,845 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1604 transitions. Word has length 36 [2021-06-12 20:27:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:12,845 INFO L482 AbstractCegarLoop]: Abstraction has 667 states and 1604 transitions. [2021-06-12 20:27:12,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1604 transitions. [2021-06-12 20:27:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:12,846 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:12,846 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:12,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-12 20:27:12,847 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:12,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:12,847 INFO L82 PathProgramCache]: Analyzing trace with hash -272428818, now seen corresponding path program 10 times [2021-06-12 20:27:12,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:12,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892704088] [2021-06-12 20:27:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:12,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:12,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892704088] [2021-06-12 20:27:12,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892704088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:12,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:12,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:12,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585747762] [2021-06-12 20:27:12,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:12,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:12,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:12,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:12,894 INFO L87 Difference]: Start difference. First operand 667 states and 1604 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:13,024 INFO L93 Difference]: Finished difference Result 837 states and 1987 transitions. [2021-06-12 20:27:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-12 20:27:13,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:13,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:13,027 INFO L225 Difference]: With dead ends: 837 [2021-06-12 20:27:13,027 INFO L226 Difference]: Without dead ends: 704 [2021-06-12 20:27:13,027 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:27:13,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-06-12 20:27:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 600. [2021-06-12 20:27:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 2.4290484140233723) internal successors, (1455), 599 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1455 transitions. [2021-06-12 20:27:13,039 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1455 transitions. Word has length 36 [2021-06-12 20:27:13,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:13,039 INFO L482 AbstractCegarLoop]: Abstraction has 600 states and 1455 transitions. [2021-06-12 20:27:13,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,039 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1455 transitions. [2021-06-12 20:27:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:13,041 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:13,041 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:13,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-12 20:27:13,041 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:13,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:13,041 INFO L82 PathProgramCache]: Analyzing trace with hash 649402124, now seen corresponding path program 11 times [2021-06-12 20:27:13,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:13,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257490117] [2021-06-12 20:27:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:13,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:13,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257490117] [2021-06-12 20:27:13,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257490117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:13,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:13,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:27:13,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059860716] [2021-06-12 20:27:13,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:27:13,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:13,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:27:13,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:27:13,100 INFO L87 Difference]: Start difference. First operand 600 states and 1455 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:13,230 INFO L93 Difference]: Finished difference Result 792 states and 1885 transitions. [2021-06-12 20:27:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 20:27:13,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:13,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:13,233 INFO L225 Difference]: With dead ends: 792 [2021-06-12 20:27:13,233 INFO L226 Difference]: Without dead ends: 743 [2021-06-12 20:27:13,233 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 73.2ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-12 20:27:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-06-12 20:27:13,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 606. [2021-06-12 20:27:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 2.4264462809917355) internal successors, (1468), 605 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1468 transitions. [2021-06-12 20:27:13,243 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1468 transitions. Word has length 36 [2021-06-12 20:27:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:13,243 INFO L482 AbstractCegarLoop]: Abstraction has 606 states and 1468 transitions. [2021-06-12 20:27:13,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1468 transitions. [2021-06-12 20:27:13,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:13,244 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:13,245 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:13,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-12 20:27:13,245 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:13,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:13,245 INFO L82 PathProgramCache]: Analyzing trace with hash -377221528, now seen corresponding path program 12 times [2021-06-12 20:27:13,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:13,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379770151] [2021-06-12 20:27:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:13,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:13,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379770151] [2021-06-12 20:27:13,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379770151] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:13,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:13,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:13,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503214795] [2021-06-12 20:27:13,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:13,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:13,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:13,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:13,278 INFO L87 Difference]: Start difference. First operand 606 states and 1468 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:13,335 INFO L93 Difference]: Finished difference Result 735 states and 1763 transitions. [2021-06-12 20:27:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:27:13,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:13,337 INFO L225 Difference]: With dead ends: 735 [2021-06-12 20:27:13,337 INFO L226 Difference]: Without dead ends: 557 [2021-06-12 20:27:13,337 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:27:13,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-06-12 20:27:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 490. [2021-06-12 20:27:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 2.4376278118609407) internal successors, (1192), 489 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1192 transitions. [2021-06-12 20:27:13,346 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1192 transitions. Word has length 36 [2021-06-12 20:27:13,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:13,346 INFO L482 AbstractCegarLoop]: Abstraction has 490 states and 1192 transitions. [2021-06-12 20:27:13,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,346 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1192 transitions. [2021-06-12 20:27:13,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:13,346 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:13,347 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:13,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-12 20:27:13,347 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:13,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:13,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1141840352, now seen corresponding path program 13 times [2021-06-12 20:27:13,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:13,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261225886] [2021-06-12 20:27:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:13,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:13,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261225886] [2021-06-12 20:27:13,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261225886] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:13,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:13,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 20:27:13,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236642796] [2021-06-12 20:27:13,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 20:27:13,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:13,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 20:27:13,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 20:27:13,357 INFO L87 Difference]: Start difference. First operand 490 states and 1192 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:13,360 INFO L93 Difference]: Finished difference Result 460 states and 1108 transitions. [2021-06-12 20:27:13,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 20:27:13,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:13,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:13,362 INFO L225 Difference]: With dead ends: 460 [2021-06-12 20:27:13,362 INFO L226 Difference]: Without dead ends: 460 [2021-06-12 20:27:13,362 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 20:27:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-06-12 20:27:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2021-06-12 20:27:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 2.4139433551198257) internal successors, (1108), 459 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1108 transitions. [2021-06-12 20:27:13,369 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1108 transitions. Word has length 36 [2021-06-12 20:27:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:13,369 INFO L482 AbstractCegarLoop]: Abstraction has 460 states and 1108 transitions. [2021-06-12 20:27:13,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1108 transitions. [2021-06-12 20:27:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:13,370 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:13,370 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:13,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-12 20:27:13,370 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:13,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:13,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1806691788, now seen corresponding path program 14 times [2021-06-12 20:27:13,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:13,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122446989] [2021-06-12 20:27:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:13,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:13,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122446989] [2021-06-12 20:27:13,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122446989] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:13,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:13,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:13,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430688061] [2021-06-12 20:27:13,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:13,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:13,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:13,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:13,415 INFO L87 Difference]: Start difference. First operand 460 states and 1108 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:13,504 INFO L93 Difference]: Finished difference Result 711 states and 1632 transitions. [2021-06-12 20:27:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:27:13,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:13,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:13,506 INFO L225 Difference]: With dead ends: 711 [2021-06-12 20:27:13,506 INFO L226 Difference]: Without dead ends: 620 [2021-06-12 20:27:13,506 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 20:27:13,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-06-12 20:27:13,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 474. [2021-06-12 20:27:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 2.386892177589852) internal successors, (1129), 473 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1129 transitions. [2021-06-12 20:27:13,514 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 1129 transitions. Word has length 36 [2021-06-12 20:27:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:13,514 INFO L482 AbstractCegarLoop]: Abstraction has 474 states and 1129 transitions. [2021-06-12 20:27:13,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1129 transitions. [2021-06-12 20:27:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:13,515 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:13,515 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:13,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-12 20:27:13,515 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:13,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:13,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1002048854, now seen corresponding path program 15 times [2021-06-12 20:27:13,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:13,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212283312] [2021-06-12 20:27:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:13,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:13,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212283312] [2021-06-12 20:27:13,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212283312] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:13,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:13,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:27:13,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025902726] [2021-06-12 20:27:13,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:27:13,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:13,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:27:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:27:13,568 INFO L87 Difference]: Start difference. First operand 474 states and 1129 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:13,665 INFO L93 Difference]: Finished difference Result 1309 states and 3098 transitions. [2021-06-12 20:27:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 20:27:13,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:13,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:13,669 INFO L225 Difference]: With dead ends: 1309 [2021-06-12 20:27:13,669 INFO L226 Difference]: Without dead ends: 1297 [2021-06-12 20:27:13,669 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:27:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-06-12 20:27:13,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 565. [2021-06-12 20:27:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 2.3900709219858154) internal successors, (1348), 564 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 1348 transitions. [2021-06-12 20:27:13,681 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 1348 transitions. Word has length 36 [2021-06-12 20:27:13,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:13,681 INFO L482 AbstractCegarLoop]: Abstraction has 565 states and 1348 transitions. [2021-06-12 20:27:13,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,682 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 1348 transitions. [2021-06-12 20:27:13,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:13,682 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:13,682 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:13,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-12 20:27:13,683 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:13,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:13,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2018104662, now seen corresponding path program 16 times [2021-06-12 20:27:13,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:13,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818352026] [2021-06-12 20:27:13,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:13,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:13,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818352026] [2021-06-12 20:27:13,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818352026] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:13,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:13,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:27:13,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198936322] [2021-06-12 20:27:13,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:27:13,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:13,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:27:13,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:27:13,734 INFO L87 Difference]: Start difference. First operand 565 states and 1348 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:13,831 INFO L93 Difference]: Finished difference Result 1256 states and 2954 transitions. [2021-06-12 20:27:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 20:27:13,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:13,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:13,835 INFO L225 Difference]: With dead ends: 1256 [2021-06-12 20:27:13,835 INFO L226 Difference]: Without dead ends: 1216 [2021-06-12 20:27:13,835 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:27:13,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-06-12 20:27:13,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 545. [2021-06-12 20:27:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 2.3713235294117645) internal successors, (1290), 544 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 1290 transitions. [2021-06-12 20:27:13,846 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 1290 transitions. Word has length 36 [2021-06-12 20:27:13,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:13,846 INFO L482 AbstractCegarLoop]: Abstraction has 545 states and 1290 transitions. [2021-06-12 20:27:13,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 1290 transitions. [2021-06-12 20:27:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:13,847 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:13,847 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:13,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-12 20:27:13,847 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:13,847 INFO L82 PathProgramCache]: Analyzing trace with hash 888977548, now seen corresponding path program 17 times [2021-06-12 20:27:13,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:13,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895586030] [2021-06-12 20:27:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:13,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:13,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895586030] [2021-06-12 20:27:13,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895586030] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:13,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:13,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:27:13,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025665029] [2021-06-12 20:27:13,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:27:13,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:13,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:27:13,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:27:13,901 INFO L87 Difference]: Start difference. First operand 545 states and 1290 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:13,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:13,990 INFO L93 Difference]: Finished difference Result 1305 states and 3069 transitions. [2021-06-12 20:27:13,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 20:27:13,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:13,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:13,994 INFO L225 Difference]: With dead ends: 1305 [2021-06-12 20:27:13,994 INFO L226 Difference]: Without dead ends: 1293 [2021-06-12 20:27:13,994 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 79.6ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:27:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2021-06-12 20:27:14,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 600. [2021-06-12 20:27:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 2.3923205342237064) internal successors, (1433), 599 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1433 transitions. [2021-06-12 20:27:14,013 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1433 transitions. Word has length 36 [2021-06-12 20:27:14,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:14,013 INFO L482 AbstractCegarLoop]: Abstraction has 600 states and 1433 transitions. [2021-06-12 20:27:14,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1433 transitions. [2021-06-12 20:27:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:14,014 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:14,014 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:14,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-12 20:27:14,014 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:14,015 INFO L82 PathProgramCache]: Analyzing trace with hash -127078260, now seen corresponding path program 18 times [2021-06-12 20:27:14,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:14,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655320176] [2021-06-12 20:27:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:14,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:14,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655320176] [2021-06-12 20:27:14,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655320176] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:14,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:14,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:27:14,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359528932] [2021-06-12 20:27:14,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:27:14,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:14,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:27:14,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:27:14,066 INFO L87 Difference]: Start difference. First operand 600 states and 1433 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:14,168 INFO L93 Difference]: Finished difference Result 1252 states and 2925 transitions. [2021-06-12 20:27:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 20:27:14,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:14,171 INFO L225 Difference]: With dead ends: 1252 [2021-06-12 20:27:14,171 INFO L226 Difference]: Without dead ends: 1216 [2021-06-12 20:27:14,172 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:27:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-06-12 20:27:14,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 560. [2021-06-12 20:27:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 2.372093023255814) internal successors, (1326), 559 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1326 transitions. [2021-06-12 20:27:14,184 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1326 transitions. Word has length 36 [2021-06-12 20:27:14,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:14,184 INFO L482 AbstractCegarLoop]: Abstraction has 560 states and 1326 transitions. [2021-06-12 20:27:14,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1326 transitions. [2021-06-12 20:27:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:14,186 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:14,186 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:14,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-12 20:27:14,186 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:14,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1614595956, now seen corresponding path program 19 times [2021-06-12 20:27:14,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:14,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689282073] [2021-06-12 20:27:14,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:14,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:14,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689282073] [2021-06-12 20:27:14,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689282073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:14,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:14,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 20:27:14,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444141651] [2021-06-12 20:27:14,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 20:27:14,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:14,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 20:27:14,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 20:27:14,195 INFO L87 Difference]: Start difference. First operand 560 states and 1326 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:14,199 INFO L93 Difference]: Finished difference Result 540 states and 1252 transitions. [2021-06-12 20:27:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 20:27:14,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:14,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:14,201 INFO L225 Difference]: With dead ends: 540 [2021-06-12 20:27:14,201 INFO L226 Difference]: Without dead ends: 530 [2021-06-12 20:27:14,201 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 20:27:14,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-06-12 20:27:14,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2021-06-12 20:27:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.325141776937618) internal successors, (1230), 529 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1230 transitions. [2021-06-12 20:27:14,209 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1230 transitions. Word has length 36 [2021-06-12 20:27:14,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:14,209 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1230 transitions. [2021-06-12 20:27:14,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1230 transitions. [2021-06-12 20:27:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:14,210 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:14,210 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:14,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-12 20:27:14,210 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:14,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:14,211 INFO L82 PathProgramCache]: Analyzing trace with hash -886716842, now seen corresponding path program 20 times [2021-06-12 20:27:14,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:14,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513672411] [2021-06-12 20:27:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:14,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:14,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513672411] [2021-06-12 20:27:14,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513672411] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:14,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:14,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:14,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121722480] [2021-06-12 20:27:14,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:14,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:14,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:14,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:14,238 INFO L87 Difference]: Start difference. First operand 530 states and 1230 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:14,351 INFO L93 Difference]: Finished difference Result 859 states and 1937 transitions. [2021-06-12 20:27:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 20:27:14,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:14,354 INFO L225 Difference]: With dead ends: 859 [2021-06-12 20:27:14,354 INFO L226 Difference]: Without dead ends: 742 [2021-06-12 20:27:14,354 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:27:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-06-12 20:27:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 521. [2021-06-12 20:27:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.3134615384615387) internal successors, (1203), 520 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1203 transitions. [2021-06-12 20:27:14,362 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1203 transitions. Word has length 36 [2021-06-12 20:27:14,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:14,362 INFO L482 AbstractCegarLoop]: Abstraction has 521 states and 1203 transitions. [2021-06-12 20:27:14,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,362 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1203 transitions. [2021-06-12 20:27:14,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:14,363 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:14,363 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:14,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-12 20:27:14,363 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:14,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:14,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1889566906, now seen corresponding path program 21 times [2021-06-12 20:27:14,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:14,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706580334] [2021-06-12 20:27:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:14,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:14,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706580334] [2021-06-12 20:27:14,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706580334] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:14,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:14,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:27:14,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858523533] [2021-06-12 20:27:14,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:27:14,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:14,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:27:14,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:27:14,392 INFO L87 Difference]: Start difference. First operand 521 states and 1203 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:14,504 INFO L93 Difference]: Finished difference Result 699 states and 1564 transitions. [2021-06-12 20:27:14,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 20:27:14,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:14,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:14,506 INFO L225 Difference]: With dead ends: 699 [2021-06-12 20:27:14,506 INFO L226 Difference]: Without dead ends: 598 [2021-06-12 20:27:14,506 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-12 20:27:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-06-12 20:27:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 434. [2021-06-12 20:27:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.325635103926097) internal successors, (1007), 433 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1007 transitions. [2021-06-12 20:27:14,513 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1007 transitions. Word has length 36 [2021-06-12 20:27:14,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:14,513 INFO L482 AbstractCegarLoop]: Abstraction has 434 states and 1007 transitions. [2021-06-12 20:27:14,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,514 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1007 transitions. [2021-06-12 20:27:14,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:14,514 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:14,514 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:14,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-12 20:27:14,514 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:14,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:14,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1799608796, now seen corresponding path program 22 times [2021-06-12 20:27:14,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:14,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497822267] [2021-06-12 20:27:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:14,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:14,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497822267] [2021-06-12 20:27:14,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497822267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:14,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:14,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:27:14,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963015797] [2021-06-12 20:27:14,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:27:14,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:14,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:27:14,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:27:14,542 INFO L87 Difference]: Start difference. First operand 434 states and 1007 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:14,652 INFO L93 Difference]: Finished difference Result 598 states and 1372 transitions. [2021-06-12 20:27:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 20:27:14,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:14,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:14,654 INFO L225 Difference]: With dead ends: 598 [2021-06-12 20:27:14,654 INFO L226 Difference]: Without dead ends: 546 [2021-06-12 20:27:14,654 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-12 20:27:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-06-12 20:27:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 441. [2021-06-12 20:27:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 2.3227272727272728) internal successors, (1022), 440 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1022 transitions. [2021-06-12 20:27:14,661 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1022 transitions. Word has length 36 [2021-06-12 20:27:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:14,661 INFO L482 AbstractCegarLoop]: Abstraction has 441 states and 1022 transitions. [2021-06-12 20:27:14,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1022 transitions. [2021-06-12 20:27:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:14,662 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:14,662 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:14,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-12 20:27:14,662 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:14,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:14,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1002873044, now seen corresponding path program 23 times [2021-06-12 20:27:14,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:14,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981040943] [2021-06-12 20:27:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:14,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:14,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981040943] [2021-06-12 20:27:14,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981040943] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:14,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:14,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:27:14,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867674982] [2021-06-12 20:27:14,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:14,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:14,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:14,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:14,687 INFO L87 Difference]: Start difference. First operand 441 states and 1022 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:14,744 INFO L93 Difference]: Finished difference Result 542 states and 1249 transitions. [2021-06-12 20:27:14,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:27:14,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:14,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:14,745 INFO L225 Difference]: With dead ends: 542 [2021-06-12 20:27:14,745 INFO L226 Difference]: Without dead ends: 381 [2021-06-12 20:27:14,745 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:27:14,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-06-12 20:27:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 342. [2021-06-12 20:27:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.346041055718475) internal successors, (800), 341 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 800 transitions. [2021-06-12 20:27:14,750 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 800 transitions. Word has length 36 [2021-06-12 20:27:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:14,750 INFO L482 AbstractCegarLoop]: Abstraction has 342 states and 800 transitions. [2021-06-12 20:27:14,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 800 transitions. [2021-06-12 20:27:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:14,751 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:14,751 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:14,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-12 20:27:14,751 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:14,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:14,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1626416734, now seen corresponding path program 24 times [2021-06-12 20:27:14,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:14,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404035278] [2021-06-12 20:27:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:14,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:14,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404035278] [2021-06-12 20:27:14,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404035278] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:14,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:14,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:27:14,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504703708] [2021-06-12 20:27:14,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:27:14,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:14,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:27:14,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:27:14,808 INFO L87 Difference]: Start difference. First operand 342 states and 800 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:14,885 INFO L93 Difference]: Finished difference Result 452 states and 1058 transitions. [2021-06-12 20:27:14,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:27:14,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:14,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:14,886 INFO L225 Difference]: With dead ends: 452 [2021-06-12 20:27:14,886 INFO L226 Difference]: Without dead ends: 432 [2021-06-12 20:27:14,886 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:27:14,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-06-12 20:27:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 377. [2021-06-12 20:27:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3351063829787235) internal successors, (878), 376 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 878 transitions. [2021-06-12 20:27:14,891 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 878 transitions. Word has length 36 [2021-06-12 20:27:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:14,891 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 878 transitions. [2021-06-12 20:27:14,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 878 transitions. [2021-06-12 20:27:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:14,892 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:14,892 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:14,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-12 20:27:14,892 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:14,892 INFO L82 PathProgramCache]: Analyzing trace with hash 610360926, now seen corresponding path program 25 times [2021-06-12 20:27:14,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:14,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955200125] [2021-06-12 20:27:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:14,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:14,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955200125] [2021-06-12 20:27:14,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955200125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:14,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:14,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:27:14,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987624277] [2021-06-12 20:27:14,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:27:14,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:14,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:27:14,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:27:14,947 INFO L87 Difference]: Start difference. First operand 377 states and 878 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:15,014 INFO L93 Difference]: Finished difference Result 397 states and 914 transitions. [2021-06-12 20:27:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:27:15,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:15,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:15,015 INFO L225 Difference]: With dead ends: 397 [2021-06-12 20:27:15,015 INFO L226 Difference]: Without dead ends: 332 [2021-06-12 20:27:15,015 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:27:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-06-12 20:27:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-06-12 20:27:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.3323262839879155) internal successors, (772), 331 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 772 transitions. [2021-06-12 20:27:15,019 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 772 transitions. Word has length 36 [2021-06-12 20:27:15,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:15,019 INFO L482 AbstractCegarLoop]: Abstraction has 332 states and 772 transitions. [2021-06-12 20:27:15,020 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 772 transitions. [2021-06-12 20:27:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:15,020 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:15,020 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:15,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-12 20:27:15,020 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:15,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:15,021 INFO L82 PathProgramCache]: Analyzing trace with hash -777524160, now seen corresponding path program 26 times [2021-06-12 20:27:15,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:15,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649788275] [2021-06-12 20:27:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:15,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:15,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649788275] [2021-06-12 20:27:15,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649788275] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:15,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:15,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:27:15,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560480404] [2021-06-12 20:27:15,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:27:15,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:15,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:27:15,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:27:15,067 INFO L87 Difference]: Start difference. First operand 332 states and 772 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:15,138 INFO L93 Difference]: Finished difference Result 472 states and 1099 transitions. [2021-06-12 20:27:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:27:15,139 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:15,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:15,139 INFO L225 Difference]: With dead ends: 472 [2021-06-12 20:27:15,139 INFO L226 Difference]: Without dead ends: 452 [2021-06-12 20:27:15,140 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:27:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-06-12 20:27:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 377. [2021-06-12 20:27:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3218085106382977) internal successors, (873), 376 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 873 transitions. [2021-06-12 20:27:15,145 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 873 transitions. Word has length 36 [2021-06-12 20:27:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:15,145 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 873 transitions. [2021-06-12 20:27:15,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 873 transitions. [2021-06-12 20:27:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:15,146 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:15,146 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:15,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-12 20:27:15,146 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:15,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1793579968, now seen corresponding path program 27 times [2021-06-12 20:27:15,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:15,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650794274] [2021-06-12 20:27:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:15,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:15,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650794274] [2021-06-12 20:27:15,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650794274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:15,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:15,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:27:15,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124498159] [2021-06-12 20:27:15,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:27:15,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:15,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:27:15,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:27:15,190 INFO L87 Difference]: Start difference. First operand 377 states and 873 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:15,252 INFO L93 Difference]: Finished difference Result 397 states and 909 transitions. [2021-06-12 20:27:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:27:15,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:15,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:15,253 INFO L225 Difference]: With dead ends: 397 [2021-06-12 20:27:15,253 INFO L226 Difference]: Without dead ends: 327 [2021-06-12 20:27:15,253 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:27:15,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-06-12 20:27:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-06-12 20:27:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 2.3251533742331287) internal successors, (758), 326 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 758 transitions. [2021-06-12 20:27:15,257 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 758 transitions. Word has length 36 [2021-06-12 20:27:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:15,258 INFO L482 AbstractCegarLoop]: Abstraction has 327 states and 758 transitions. [2021-06-12 20:27:15,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 758 transitions. [2021-06-12 20:27:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-12 20:27:15,258 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:27:15,258 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:27:15,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-12 20:27:15,258 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:27:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:27:15,259 INFO L82 PathProgramCache]: Analyzing trace with hash -2007695822, now seen corresponding path program 28 times [2021-06-12 20:27:15,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:27:15,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585733177] [2021-06-12 20:27:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:27:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:27:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:27:15,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:27:15,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585733177] [2021-06-12 20:27:15,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585733177] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:27:15,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:27:15,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:27:15,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484323279] [2021-06-12 20:27:15,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:27:15,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:27:15,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:27:15,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:27:15,284 INFO L87 Difference]: Start difference. First operand 327 states and 758 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:27:15,312 INFO L93 Difference]: Finished difference Result 189 states and 426 transitions. [2021-06-12 20:27:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 20:27:15,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-12 20:27:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:27:15,313 INFO L225 Difference]: With dead ends: 189 [2021-06-12 20:27:15,313 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 20:27:15,313 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:27:15,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 20:27:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 20:27:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 20:27:15,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-06-12 20:27:15,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:27:15,313 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 20:27:15,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:27:15,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 20:27:15,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 20:27:15,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-12 20:27:15,315 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 20:27:15,317 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 08:27:15 BasicIcfg [2021-06-12 20:27:15,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 20:27:15,317 INFO L168 Benchmark]: Toolchain (without parser) took 5132.79 ms. Allocated memory was 200.3 MB in the beginning and 361.8 MB in the end (delta: 161.5 MB). Free memory was 179.9 MB in the beginning and 160.8 MB in the end (delta: 19.1 MB). Peak memory consumption was 181.6 MB. Max. memory is 8.0 GB. [2021-06-12 20:27:15,317 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 200.3 MB. Free memory is still 181.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 20:27:15,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.03 ms. Allocated memory is still 200.3 MB. Free memory was 179.8 MB in the beginning and 178.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 20:27:15,317 INFO L168 Benchmark]: Boogie Preprocessor took 12.66 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 177.4 MB in the end (delta: 931.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 20:27:15,317 INFO L168 Benchmark]: RCFGBuilder took 242.91 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 165.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-12 20:27:15,318 INFO L168 Benchmark]: TraceAbstraction took 4853.18 ms. Allocated memory was 200.3 MB in the beginning and 361.8 MB in the end (delta: 161.5 MB). Free memory was 164.4 MB in the beginning and 160.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 165.9 MB. Max. memory is 8.0 GB. [2021-06-12 20:27:15,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 200.3 MB. Free memory is still 181.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.03 ms. Allocated memory is still 200.3 MB. Free memory was 179.8 MB in the beginning and 178.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.66 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 177.4 MB in the end (delta: 931.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 242.91 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 165.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4853.18 ms. Allocated memory was 200.3 MB in the beginning and 361.8 MB in the end (delta: 161.5 MB). Free memory was 164.4 MB in the beginning and 160.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 165.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 71 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4743.8ms, OverallIterations: 28, TraceHistogramMax: 1, EmptinessCheckTime: 54.7ms, AutomataDifference: 2830.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 59.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2385 SDtfs, 3469 SDslu, 7940 SDs, 0 SdLazy, 2763 SolverSat, 396 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1008.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1807.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=826occurred in iteration=3, InterpolantAutomatonStates: 325, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 345.4ms AutomataMinimizationTime, 28 MinimizatonAttempts, 6039 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.2ms SsaConstructionTime, 110.4ms SatisfiabilityAnalysisTime, 1121.5ms InterpolantComputationTime, 1008 NumberOfCodeBlocks, 1008 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 980 ConstructedInterpolants, 0 QuantifiedInterpolants, 3524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...