/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 22:17:45,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 22:17:45,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 22:17:45,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 22:17:45,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 22:17:45,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 22:17:45,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 22:17:45,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 22:17:45,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 22:17:45,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 22:17:45,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 22:17:45,892 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 22:17:45,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 22:17:45,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 22:17:45,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 22:17:45,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 22:17:45,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 22:17:45,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 22:17:45,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 22:17:45,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 22:17:45,894 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 22:17:45,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 22:17:45,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 22:17:45,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 22:17:45,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 22:17:45,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 22:17:45,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 22:17:45,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 22:17:45,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 22:17:45,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 22:17:45,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 22:17:45,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 22:17:45,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 22:17:45,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 22:17:45,896 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 22:17:45,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 22:17:45,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 22:17:46,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 22:17:46,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 22:17:46,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 22:17:46,237 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-10 22:17:46,238 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-10 22:17:46,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-03-10 22:17:46,239 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-03-10 22:17:46,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 22:17:46,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-10 22:17:46,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 22:17:46,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 22:17:46,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 22:17:46,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/1) ... [2021-03-10 22:17:46,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/1) ... [2021-03-10 22:17:46,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 22:17:46,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 22:17:46,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 22:17:46,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 22:17:46,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/1) ... [2021-03-10 22:17:46,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/1) ... [2021-03-10 22:17:46,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/1) ... [2021-03-10 22:17:46,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/1) ... [2021-03-10 22:17:46,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/1) ... [2021-03-10 22:17:46,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/1) ... [2021-03-10 22:17:46,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/1) ... [2021-03-10 22:17:46,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 22:17:46,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 22:17:46,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 22:17:46,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 22:17:46,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 22:17:46,405 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-10 22:17:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-10 22:17:46,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-10 22:17:46,405 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-10 22:17:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-10 22:17:46,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-10 22:17:46,406 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-10 22:17:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 22:17:46,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 22:17:46,406 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-10 22:17:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-10 22:17:46,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-10 22:17:46,407 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 22:17:46,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 22:17:46,694 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-10 22:17:46,695 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:17:46 BoogieIcfgContainer [2021-03-10 22:17:46,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 22:17:46,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 22:17:46,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 22:17:46,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 22:17:46,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:17:46" (1/2) ... [2021-03-10 22:17:46,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea7f131 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 10:17:46, skipping insertion in model container [2021-03-10 22:17:46,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:17:46" (2/2) ... [2021-03-10 22:17:46,701 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-03-10 22:17:46,706 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 22:17:46,706 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 22:17:46,709 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 22:17:46,710 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 22:17:46,748 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-10 22:17:46,761 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 22:17:46,778 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 22:17:46,778 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 22:17:46,778 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 22:17:46,778 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 22:17:46,778 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 22:17:46,778 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 22:17:46,778 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 22:17:46,779 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 22:17:46,787 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 53 transitions, 130 flow [2021-03-10 22:17:46,992 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:47,035 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:47,036 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:47,036 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:47,041 INFO L82 PathProgramCache]: Analyzing trace with hash 21714732, now seen corresponding path program 1 times [2021-03-10 22:17:47,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:47,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660116472] [2021-03-10 22:17:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:47,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660116472] [2021-03-10 22:17:47,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:47,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:17:47,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916123578] [2021-03-10 22:17:47,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:17:47,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:47,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:17:47,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:17:47,420 INFO L87 Difference]: Start difference. First operand has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:47,747 INFO L93 Difference]: Finished difference Result 4745 states and 13303 transitions. [2021-03-10 22:17:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:17:47,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:47,783 INFO L225 Difference]: With dead ends: 4745 [2021-03-10 22:17:47,783 INFO L226 Difference]: Without dead ends: 4745 [2021-03-10 22:17:47,784 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2021-03-10 22:17:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 3801. [2021-03-10 22:17:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3801 states, 3800 states have (on average 2.7786842105263156) internal successors, (10559), 3800 states have internal predecessors, (10559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 10559 transitions. [2021-03-10 22:17:48,002 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 10559 transitions. Word has length 48 [2021-03-10 22:17:48,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:48,002 INFO L480 AbstractCegarLoop]: Abstraction has 3801 states and 10559 transitions. [2021-03-10 22:17:48,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 10559 transitions. [2021-03-10 22:17:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:48,012 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:48,012 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:48,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 22:17:48,013 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:48,014 INFO L82 PathProgramCache]: Analyzing trace with hash -2032039124, now seen corresponding path program 2 times [2021-03-10 22:17:48,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:48,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238438971] [2021-03-10 22:17:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:48,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238438971] [2021-03-10 22:17:48,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:48,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:48,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125990987] [2021-03-10 22:17:48,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:17:48,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:48,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:17:48,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:48,158 INFO L87 Difference]: Start difference. First operand 3801 states and 10559 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:48,355 INFO L93 Difference]: Finished difference Result 4934 states and 13232 transitions. [2021-03-10 22:17:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:17:48,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:48,378 INFO L225 Difference]: With dead ends: 4934 [2021-03-10 22:17:48,378 INFO L226 Difference]: Without dead ends: 4747 [2021-03-10 22:17:48,379 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:17:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2021-03-10 22:17:48,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 3846. [2021-03-10 22:17:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3845 states have (on average 2.7667100130039013) internal successors, (10638), 3845 states have internal predecessors, (10638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 10638 transitions. [2021-03-10 22:17:48,523 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 10638 transitions. Word has length 48 [2021-03-10 22:17:48,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:48,523 INFO L480 AbstractCegarLoop]: Abstraction has 3846 states and 10638 transitions. [2021-03-10 22:17:48,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:48,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 10638 transitions. [2021-03-10 22:17:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:48,532 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:48,532 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:48,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 22:17:48,533 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:48,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1542847906, now seen corresponding path program 3 times [2021-03-10 22:17:48,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:48,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612673385] [2021-03-10 22:17:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:48,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612673385] [2021-03-10 22:17:48,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:48,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:17:48,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469920123] [2021-03-10 22:17:48,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:17:48,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:48,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:17:48,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:48,742 INFO L87 Difference]: Start difference. First operand 3846 states and 10638 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:49,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:49,079 INFO L93 Difference]: Finished difference Result 5928 states and 16308 transitions. [2021-03-10 22:17:49,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:17:49,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:49,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:49,103 INFO L225 Difference]: With dead ends: 5928 [2021-03-10 22:17:49,103 INFO L226 Difference]: Without dead ends: 5892 [2021-03-10 22:17:49,103 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2021-03-10 22:17:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 4234. [2021-03-10 22:17:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4234 states, 4233 states have (on average 2.752421450507914) internal successors, (11651), 4233 states have internal predecessors, (11651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 11651 transitions. [2021-03-10 22:17:49,256 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 11651 transitions. Word has length 48 [2021-03-10 22:17:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:49,257 INFO L480 AbstractCegarLoop]: Abstraction has 4234 states and 11651 transitions. [2021-03-10 22:17:49,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 11651 transitions. [2021-03-10 22:17:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:49,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:49,269 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:49,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 22:17:49,269 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:49,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:49,271 INFO L82 PathProgramCache]: Analyzing trace with hash -698609762, now seen corresponding path program 4 times [2021-03-10 22:17:49,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:49,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810428103] [2021-03-10 22:17:49,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:49,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810428103] [2021-03-10 22:17:49,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:49,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:17:49,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826777603] [2021-03-10 22:17:49,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:17:49,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:49,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:17:49,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:49,488 INFO L87 Difference]: Start difference. First operand 4234 states and 11651 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:49,931 INFO L93 Difference]: Finished difference Result 5769 states and 15869 transitions. [2021-03-10 22:17:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:17:49,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:49,951 INFO L225 Difference]: With dead ends: 5769 [2021-03-10 22:17:49,952 INFO L226 Difference]: Without dead ends: 5769 [2021-03-10 22:17:49,952 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:50,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5769 states. [2021-03-10 22:17:50,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5769 to 4198. [2021-03-10 22:17:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4198 states, 4197 states have (on average 2.74815344293543) internal successors, (11534), 4197 states have internal predecessors, (11534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 11534 transitions. [2021-03-10 22:17:50,104 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 11534 transitions. Word has length 48 [2021-03-10 22:17:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:50,104 INFO L480 AbstractCegarLoop]: Abstraction has 4198 states and 11534 transitions. [2021-03-10 22:17:50,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 11534 transitions. [2021-03-10 22:17:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:50,113 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:50,113 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:50,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 22:17:50,113 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:50,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:50,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1857395998, now seen corresponding path program 5 times [2021-03-10 22:17:50,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:50,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636083762] [2021-03-10 22:17:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:50,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636083762] [2021-03-10 22:17:50,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:50,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:50,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209005168] [2021-03-10 22:17:50,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:17:50,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:50,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:17:50,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:50,226 INFO L87 Difference]: Start difference. First operand 4198 states and 11534 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:50,418 INFO L93 Difference]: Finished difference Result 5333 states and 14205 transitions. [2021-03-10 22:17:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:17:50,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:50,432 INFO L225 Difference]: With dead ends: 5333 [2021-03-10 22:17:50,433 INFO L226 Difference]: Without dead ends: 4805 [2021-03-10 22:17:50,433 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 145.3ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:17:50,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2021-03-10 22:17:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 3905. [2021-03-10 22:17:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3905 states, 3904 states have (on average 2.7482069672131146) internal successors, (10729), 3904 states have internal predecessors, (10729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 10729 transitions. [2021-03-10 22:17:50,562 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 10729 transitions. Word has length 48 [2021-03-10 22:17:50,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:50,562 INFO L480 AbstractCegarLoop]: Abstraction has 3905 states and 10729 transitions. [2021-03-10 22:17:50,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 10729 transitions. [2021-03-10 22:17:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:50,571 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:50,571 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:50,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 22:17:50,572 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:50,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1271126176, now seen corresponding path program 6 times [2021-03-10 22:17:50,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:50,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650392398] [2021-03-10 22:17:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:50,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650392398] [2021-03-10 22:17:50,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:50,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 22:17:50,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338000784] [2021-03-10 22:17:50,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 22:17:50,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:50,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 22:17:50,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:17:50,611 INFO L87 Difference]: Start difference. First operand 3905 states and 10729 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:50,628 INFO L93 Difference]: Finished difference Result 3881 states and 10519 transitions. [2021-03-10 22:17:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 22:17:50,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:50,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:50,637 INFO L225 Difference]: With dead ends: 3881 [2021-03-10 22:17:50,637 INFO L226 Difference]: Without dead ends: 3869 [2021-03-10 22:17:50,637 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:17:50,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2021-03-10 22:17:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 3869. [2021-03-10 22:17:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3869 states, 3868 states have (on average 2.7109617373319543) internal successors, (10486), 3868 states have internal predecessors, (10486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 10486 transitions. [2021-03-10 22:17:50,740 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 10486 transitions. Word has length 48 [2021-03-10 22:17:50,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:50,741 INFO L480 AbstractCegarLoop]: Abstraction has 3869 states and 10486 transitions. [2021-03-10 22:17:50,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 10486 transitions. [2021-03-10 22:17:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:50,751 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:50,751 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:50,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 22:17:50,752 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:50,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:50,752 INFO L82 PathProgramCache]: Analyzing trace with hash -3563124, now seen corresponding path program 7 times [2021-03-10 22:17:50,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:50,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749675318] [2021-03-10 22:17:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:50,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749675318] [2021-03-10 22:17:50,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:50,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:17:50,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625292892] [2021-03-10 22:17:50,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:17:50,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:50,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:17:50,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:17:50,854 INFO L87 Difference]: Start difference. First operand 3869 states and 10486 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:51,107 INFO L93 Difference]: Finished difference Result 5612 states and 15102 transitions. [2021-03-10 22:17:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:17:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:51,121 INFO L225 Difference]: With dead ends: 5612 [2021-03-10 22:17:51,121 INFO L226 Difference]: Without dead ends: 5576 [2021-03-10 22:17:51,121 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 111.8ms TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:17:51,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2021-03-10 22:17:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 4279. [2021-03-10 22:17:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 2.6956521739130435) internal successors, (11532), 4278 states have internal predecessors, (11532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 11532 transitions. [2021-03-10 22:17:51,255 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 11532 transitions. Word has length 48 [2021-03-10 22:17:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:51,255 INFO L480 AbstractCegarLoop]: Abstraction has 4279 states and 11532 transitions. [2021-03-10 22:17:51,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 11532 transitions. [2021-03-10 22:17:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:51,262 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:51,262 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:51,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 22:17:51,262 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:51,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:51,263 INFO L82 PathProgramCache]: Analyzing trace with hash 847917452, now seen corresponding path program 8 times [2021-03-10 22:17:51,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:51,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842646277] [2021-03-10 22:17:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:51,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842646277] [2021-03-10 22:17:51,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:51,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:17:51,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983639398] [2021-03-10 22:17:51,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:17:51,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:51,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:17:51,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:17:51,428 INFO L87 Difference]: Start difference. First operand 4279 states and 11532 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:51,680 INFO L93 Difference]: Finished difference Result 5456 states and 14677 transitions. [2021-03-10 22:17:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:17:51,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:51,690 INFO L225 Difference]: With dead ends: 5456 [2021-03-10 22:17:51,691 INFO L226 Difference]: Without dead ends: 5025 [2021-03-10 22:17:51,691 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:17:51,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2021-03-10 22:17:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 3799. [2021-03-10 22:17:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3798 states have (on average 2.7093206951026856) internal successors, (10290), 3798 states have internal predecessors, (10290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:51,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 10290 transitions. [2021-03-10 22:17:51,797 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 10290 transitions. Word has length 48 [2021-03-10 22:17:51,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:51,798 INFO L480 AbstractCegarLoop]: Abstraction has 3799 states and 10290 transitions. [2021-03-10 22:17:51,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:51,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 10290 transitions. [2021-03-10 22:17:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:51,804 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:51,804 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:51,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 22:17:51,804 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:51,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1892401014, now seen corresponding path program 9 times [2021-03-10 22:17:51,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:51,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438358546] [2021-03-10 22:17:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:51,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438358546] [2021-03-10 22:17:51,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:51,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:17:51,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413506155] [2021-03-10 22:17:51,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:17:51,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:51,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:17:51,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:51,954 INFO L87 Difference]: Start difference. First operand 3799 states and 10290 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:52,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:52,246 INFO L93 Difference]: Finished difference Result 5292 states and 14283 transitions. [2021-03-10 22:17:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:17:52,246 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:52,254 INFO L225 Difference]: With dead ends: 5292 [2021-03-10 22:17:52,254 INFO L226 Difference]: Without dead ends: 4943 [2021-03-10 22:17:52,254 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:17:52,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4943 states. [2021-03-10 22:17:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4943 to 4066. [2021-03-10 22:17:52,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4066 states, 4065 states have (on average 2.6956949569495694) internal successors, (10958), 4065 states have internal predecessors, (10958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 10958 transitions. [2021-03-10 22:17:52,368 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 10958 transitions. Word has length 48 [2021-03-10 22:17:52,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:52,368 INFO L480 AbstractCegarLoop]: Abstraction has 4066 states and 10958 transitions. [2021-03-10 22:17:52,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 10958 transitions. [2021-03-10 22:17:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:52,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:52,378 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:52,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 22:17:52,379 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:52,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:52,379 INFO L82 PathProgramCache]: Analyzing trace with hash 556588354, now seen corresponding path program 10 times [2021-03-10 22:17:52,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:52,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686520407] [2021-03-10 22:17:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:52,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686520407] [2021-03-10 22:17:52,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:52,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:17:52,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490366817] [2021-03-10 22:17:52,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:17:52,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:52,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:17:52,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:17:52,532 INFO L87 Difference]: Start difference. First operand 4066 states and 10958 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:52,844 INFO L93 Difference]: Finished difference Result 5515 states and 14764 transitions. [2021-03-10 22:17:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 22:17:52,845 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:52,853 INFO L225 Difference]: With dead ends: 5515 [2021-03-10 22:17:52,853 INFO L226 Difference]: Without dead ends: 5473 [2021-03-10 22:17:52,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 140.1ms TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:17:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2021-03-10 22:17:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 4186. [2021-03-10 22:17:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4185 states have (on average 2.688410991636798) internal successors, (11251), 4185 states have internal predecessors, (11251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 11251 transitions. [2021-03-10 22:17:52,961 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 11251 transitions. Word has length 48 [2021-03-10 22:17:52,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:52,962 INFO L480 AbstractCegarLoop]: Abstraction has 4186 states and 11251 transitions. [2021-03-10 22:17:52,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 11251 transitions. [2021-03-10 22:17:52,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:52,969 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:52,969 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:52,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 22:17:52,969 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:52,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:52,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1857856736, now seen corresponding path program 11 times [2021-03-10 22:17:52,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:52,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037357355] [2021-03-10 22:17:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:53,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037357355] [2021-03-10 22:17:53,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:53,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:17:53,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737453232] [2021-03-10 22:17:53,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:17:53,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:53,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:17:53,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:17:53,109 INFO L87 Difference]: Start difference. First operand 4186 states and 11251 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:53,466 INFO L93 Difference]: Finished difference Result 5452 states and 14602 transitions. [2021-03-10 22:17:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 22:17:53,466 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:53,475 INFO L225 Difference]: With dead ends: 5452 [2021-03-10 22:17:53,475 INFO L226 Difference]: Without dead ends: 5252 [2021-03-10 22:17:53,476 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:17:53,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2021-03-10 22:17:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 4038. [2021-03-10 22:17:53,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 4037 states have (on average 2.6972999752291305) internal successors, (10889), 4037 states have internal predecessors, (10889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 10889 transitions. [2021-03-10 22:17:53,584 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 10889 transitions. Word has length 48 [2021-03-10 22:17:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:53,584 INFO L480 AbstractCegarLoop]: Abstraction has 4038 states and 10889 transitions. [2021-03-10 22:17:53,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 10889 transitions. [2021-03-10 22:17:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:53,590 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:53,590 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:53,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-10 22:17:53,591 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:53,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:53,591 INFO L82 PathProgramCache]: Analyzing trace with hash -865700294, now seen corresponding path program 12 times [2021-03-10 22:17:53,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:53,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366702510] [2021-03-10 22:17:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:53,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366702510] [2021-03-10 22:17:53,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:53,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:53,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27933343] [2021-03-10 22:17:53,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:17:53,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:53,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:17:53,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:53,738 INFO L87 Difference]: Start difference. First operand 4038 states and 10889 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:53,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:53,952 INFO L93 Difference]: Finished difference Result 5884 states and 15912 transitions. [2021-03-10 22:17:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:17:53,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:53,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:53,959 INFO L225 Difference]: With dead ends: 5884 [2021-03-10 22:17:53,959 INFO L226 Difference]: Without dead ends: 5680 [2021-03-10 22:17:53,959 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:54,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2021-03-10 22:17:54,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 4417. [2021-03-10 22:17:54,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4417 states, 4416 states have (on average 2.6979166666666665) internal successors, (11914), 4416 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4417 states to 4417 states and 11914 transitions. [2021-03-10 22:17:54,094 INFO L78 Accepts]: Start accepts. Automaton has 4417 states and 11914 transitions. Word has length 48 [2021-03-10 22:17:54,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:54,094 INFO L480 AbstractCegarLoop]: Abstraction has 4417 states and 11914 transitions. [2021-03-10 22:17:54,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4417 states and 11914 transitions. [2021-03-10 22:17:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:54,102 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:54,102 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:54,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-10 22:17:54,103 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:54,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash -80771658, now seen corresponding path program 13 times [2021-03-10 22:17:54,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:54,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331559511] [2021-03-10 22:17:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:54,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331559511] [2021-03-10 22:17:54,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:54,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:54,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476943854] [2021-03-10 22:17:54,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:17:54,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:54,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:17:54,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:54,223 INFO L87 Difference]: Start difference. First operand 4417 states and 11914 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:54,446 INFO L93 Difference]: Finished difference Result 5021 states and 13555 transitions. [2021-03-10 22:17:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:17:54,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:54,452 INFO L225 Difference]: With dead ends: 5021 [2021-03-10 22:17:54,452 INFO L226 Difference]: Without dead ends: 5021 [2021-03-10 22:17:54,452 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:54,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2021-03-10 22:17:54,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 4553. [2021-03-10 22:17:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4552 states have (on average 2.6913444639718804) internal successors, (12251), 4552 states have internal predecessors, (12251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 12251 transitions. [2021-03-10 22:17:54,563 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 12251 transitions. Word has length 48 [2021-03-10 22:17:54,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:54,563 INFO L480 AbstractCegarLoop]: Abstraction has 4553 states and 12251 transitions. [2021-03-10 22:17:54,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 12251 transitions. [2021-03-10 22:17:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:54,571 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:54,571 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:54,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-10 22:17:54,572 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:54,572 INFO L82 PathProgramCache]: Analyzing trace with hash 355340122, now seen corresponding path program 14 times [2021-03-10 22:17:54,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:54,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181504060] [2021-03-10 22:17:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:54,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181504060] [2021-03-10 22:17:54,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:54,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:54,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962173164] [2021-03-10 22:17:54,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:17:54,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:54,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:17:54,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:54,677 INFO L87 Difference]: Start difference. First operand 4553 states and 12251 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:54,891 INFO L93 Difference]: Finished difference Result 5648 states and 15065 transitions. [2021-03-10 22:17:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:17:54,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:54,897 INFO L225 Difference]: With dead ends: 5648 [2021-03-10 22:17:54,897 INFO L226 Difference]: Without dead ends: 5360 [2021-03-10 22:17:54,898 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2021-03-10 22:17:55,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 4433. [2021-03-10 22:17:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4433 states, 4432 states have (on average 2.691335740072202) internal successors, (11928), 4432 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 11928 transitions. [2021-03-10 22:17:55,034 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 11928 transitions. Word has length 48 [2021-03-10 22:17:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:55,034 INFO L480 AbstractCegarLoop]: Abstraction has 4433 states and 11928 transitions. [2021-03-10 22:17:55,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 11928 transitions. [2021-03-10 22:17:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:55,047 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:55,047 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:55,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-10 22:17:55,047 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:55,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:55,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1889183876, now seen corresponding path program 15 times [2021-03-10 22:17:55,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:55,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986454728] [2021-03-10 22:17:55,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:55,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986454728] [2021-03-10 22:17:55,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:55,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:17:55,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186335190] [2021-03-10 22:17:55,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:17:55,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:55,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:17:55,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:17:55,178 INFO L87 Difference]: Start difference. First operand 4433 states and 11928 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:55,448 INFO L93 Difference]: Finished difference Result 5612 states and 14955 transitions. [2021-03-10 22:17:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:17:55,449 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:55,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:55,453 INFO L225 Difference]: With dead ends: 5612 [2021-03-10 22:17:55,453 INFO L226 Difference]: Without dead ends: 5357 [2021-03-10 22:17:55,453 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:17:55,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2021-03-10 22:17:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 4391. [2021-03-10 22:17:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 2.6931662870159454) internal successors, (11823), 4390 states have internal predecessors, (11823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 11823 transitions. [2021-03-10 22:17:55,542 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 11823 transitions. Word has length 48 [2021-03-10 22:17:55,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:55,543 INFO L480 AbstractCegarLoop]: Abstraction has 4391 states and 11823 transitions. [2021-03-10 22:17:55,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 11823 transitions. [2021-03-10 22:17:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:55,548 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:55,548 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:55,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-10 22:17:55,548 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:55,549 INFO L82 PathProgramCache]: Analyzing trace with hash 868296408, now seen corresponding path program 16 times [2021-03-10 22:17:55,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:55,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994971053] [2021-03-10 22:17:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:55,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994971053] [2021-03-10 22:17:55,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:55,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:55,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142564159] [2021-03-10 22:17:55,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:17:55,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:55,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:17:55,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:55,648 INFO L87 Difference]: Start difference. First operand 4391 states and 11823 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:55,817 INFO L93 Difference]: Finished difference Result 4931 states and 13292 transitions. [2021-03-10 22:17:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:17:55,817 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:55,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:55,822 INFO L225 Difference]: With dead ends: 4931 [2021-03-10 22:17:55,822 INFO L226 Difference]: Without dead ends: 4931 [2021-03-10 22:17:55,823 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:55,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2021-03-10 22:17:55,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4487. [2021-03-10 22:17:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 2.686357556843513) internal successors, (12051), 4486 states have internal predecessors, (12051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 12051 transitions. [2021-03-10 22:17:55,910 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 12051 transitions. Word has length 48 [2021-03-10 22:17:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:55,910 INFO L480 AbstractCegarLoop]: Abstraction has 4487 states and 12051 transitions. [2021-03-10 22:17:55,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 12051 transitions. [2021-03-10 22:17:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:55,914 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:55,915 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:55,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-10 22:17:55,915 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:55,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:55,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1304408188, now seen corresponding path program 17 times [2021-03-10 22:17:55,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:55,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372074198] [2021-03-10 22:17:55,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:56,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372074198] [2021-03-10 22:17:56,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:56,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:17:56,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130472759] [2021-03-10 22:17:56,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:17:56,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:56,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:17:56,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:56,005 INFO L87 Difference]: Start difference. First operand 4487 states and 12051 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:56,260 INFO L93 Difference]: Finished difference Result 5084 states and 13653 transitions. [2021-03-10 22:17:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:17:56,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:56,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:56,265 INFO L225 Difference]: With dead ends: 5084 [2021-03-10 22:17:56,265 INFO L226 Difference]: Without dead ends: 4820 [2021-03-10 22:17:56,266 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:17:56,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4820 states. [2021-03-10 22:17:56,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4820 to 4351. [2021-03-10 22:17:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4351 states, 4350 states have (on average 2.6928735632183907) internal successors, (11714), 4350 states have internal predecessors, (11714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4351 states to 4351 states and 11714 transitions. [2021-03-10 22:17:56,366 INFO L78 Accepts]: Start accepts. Automaton has 4351 states and 11714 transitions. Word has length 48 [2021-03-10 22:17:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:56,367 INFO L480 AbstractCegarLoop]: Abstraction has 4351 states and 11714 transitions. [2021-03-10 22:17:56,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4351 states and 11714 transitions. [2021-03-10 22:17:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:56,372 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:56,372 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:56,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-10 22:17:56,373 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:56,374 INFO L82 PathProgramCache]: Analyzing trace with hash 271395798, now seen corresponding path program 18 times [2021-03-10 22:17:56,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:56,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157780387] [2021-03-10 22:17:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:56,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157780387] [2021-03-10 22:17:56,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:56,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:17:56,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953476597] [2021-03-10 22:17:56,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:56,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:56,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:56,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:56,445 INFO L87 Difference]: Start difference. First operand 4351 states and 11714 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:56,642 INFO L93 Difference]: Finished difference Result 4867 states and 13112 transitions. [2021-03-10 22:17:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:17:56,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:56,648 INFO L225 Difference]: With dead ends: 4867 [2021-03-10 22:17:56,648 INFO L226 Difference]: Without dead ends: 4867 [2021-03-10 22:17:56,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2021-03-10 22:17:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4511. [2021-03-10 22:17:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4511 states, 4510 states have (on average 2.6851441241685143) internal successors, (12110), 4510 states have internal predecessors, (12110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 12110 transitions. [2021-03-10 22:17:56,730 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 12110 transitions. Word has length 48 [2021-03-10 22:17:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:56,730 INFO L480 AbstractCegarLoop]: Abstraction has 4511 states and 12110 transitions. [2021-03-10 22:17:56,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 12110 transitions. [2021-03-10 22:17:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:56,733 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:56,734 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:56,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-10 22:17:56,734 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:56,734 INFO L82 PathProgramCache]: Analyzing trace with hash 707507578, now seen corresponding path program 19 times [2021-03-10 22:17:56,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:56,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234274319] [2021-03-10 22:17:56,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:56,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234274319] [2021-03-10 22:17:56,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:56,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:17:56,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208338682] [2021-03-10 22:17:56,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:56,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:56,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:56,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:56,819 INFO L87 Difference]: Start difference. First operand 4511 states and 12110 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:57,037 INFO L93 Difference]: Finished difference Result 5062 states and 13563 transitions. [2021-03-10 22:17:57,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:17:57,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:57,043 INFO L225 Difference]: With dead ends: 5062 [2021-03-10 22:17:57,043 INFO L226 Difference]: Without dead ends: 4855 [2021-03-10 22:17:57,044 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 67.1ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2021-03-10 22:17:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4507. [2021-03-10 22:17:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4507 states, 4506 states have (on average 2.6819795827785176) internal successors, (12085), 4506 states have internal predecessors, (12085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4507 states to 4507 states and 12085 transitions. [2021-03-10 22:17:57,129 INFO L78 Accepts]: Start accepts. Automaton has 4507 states and 12085 transitions. Word has length 48 [2021-03-10 22:17:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:57,129 INFO L480 AbstractCegarLoop]: Abstraction has 4507 states and 12085 transitions. [2021-03-10 22:17:57,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4507 states and 12085 transitions. [2021-03-10 22:17:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:57,135 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:57,135 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:57,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-10 22:17:57,135 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:57,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2132515486, now seen corresponding path program 20 times [2021-03-10 22:17:57,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:57,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524170960] [2021-03-10 22:17:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:57,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524170960] [2021-03-10 22:17:57,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:57,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:17:57,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344532907] [2021-03-10 22:17:57,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:17:57,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:57,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:17:57,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:17:57,213 INFO L87 Difference]: Start difference. First operand 4507 states and 12085 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:57,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:57,458 INFO L93 Difference]: Finished difference Result 5083 states and 13600 transitions. [2021-03-10 22:17:57,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:17:57,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:57,461 INFO L225 Difference]: With dead ends: 5083 [2021-03-10 22:17:57,461 INFO L226 Difference]: Without dead ends: 4845 [2021-03-10 22:17:57,462 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:17:57,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2021-03-10 22:17:57,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4477. [2021-03-10 22:17:57,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4476 states have (on average 2.679401251117069) internal successors, (11993), 4476 states have internal predecessors, (11993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:57,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 11993 transitions. [2021-03-10 22:17:57,532 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 11993 transitions. Word has length 48 [2021-03-10 22:17:57,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:57,532 INFO L480 AbstractCegarLoop]: Abstraction has 4477 states and 11993 transitions. [2021-03-10 22:17:57,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:57,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 11993 transitions. [2021-03-10 22:17:57,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:57,537 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:57,537 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:57,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-10 22:17:57,537 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:57,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1837031454, now seen corresponding path program 21 times [2021-03-10 22:17:57,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:57,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192866140] [2021-03-10 22:17:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:57,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192866140] [2021-03-10 22:17:57,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:57,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:17:57,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578430841] [2021-03-10 22:17:57,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:17:57,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:57,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:17:57,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:57,658 INFO L87 Difference]: Start difference. First operand 4477 states and 11993 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:57,973 INFO L93 Difference]: Finished difference Result 6144 states and 16182 transitions. [2021-03-10 22:17:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 22:17:57,974 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:57,980 INFO L225 Difference]: With dead ends: 6144 [2021-03-10 22:17:57,980 INFO L226 Difference]: Without dead ends: 6108 [2021-03-10 22:17:57,981 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 160.4ms TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:17:58,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6108 states. [2021-03-10 22:17:58,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6108 to 4760. [2021-03-10 22:17:58,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4760 states, 4759 states have (on average 2.6711494011346923) internal successors, (12712), 4759 states have internal predecessors, (12712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 12712 transitions. [2021-03-10 22:17:58,080 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 12712 transitions. Word has length 48 [2021-03-10 22:17:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:58,080 INFO L480 AbstractCegarLoop]: Abstraction has 4760 states and 12712 transitions. [2021-03-10 22:17:58,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 12712 transitions. [2021-03-10 22:17:58,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:58,086 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:58,086 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:58,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-10 22:17:58,086 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash -535763072, now seen corresponding path program 22 times [2021-03-10 22:17:58,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:58,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692670488] [2021-03-10 22:17:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:58,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692670488] [2021-03-10 22:17:58,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:58,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:17:58,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17034499] [2021-03-10 22:17:58,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:17:58,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:58,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:17:58,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:58,213 INFO L87 Difference]: Start difference. First operand 4760 states and 12712 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:58,513 INFO L93 Difference]: Finished difference Result 6183 states and 16253 transitions. [2021-03-10 22:17:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 22:17:58,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:58,517 INFO L225 Difference]: With dead ends: 6183 [2021-03-10 22:17:58,517 INFO L226 Difference]: Without dead ends: 5968 [2021-03-10 22:17:58,517 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 162.4ms TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:17:58,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5968 states. [2021-03-10 22:17:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5968 to 4729. [2021-03-10 22:17:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4729 states, 4728 states have (on average 2.662648054145516) internal successors, (12589), 4728 states have internal predecessors, (12589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 12589 transitions. [2021-03-10 22:17:58,621 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 12589 transitions. Word has length 48 [2021-03-10 22:17:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:58,621 INFO L480 AbstractCegarLoop]: Abstraction has 4729 states and 12589 transitions. [2021-03-10 22:17:58,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 12589 transitions. [2021-03-10 22:17:58,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:58,627 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:58,627 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:58,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-10 22:17:58,627 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:58,628 INFO L82 PathProgramCache]: Analyzing trace with hash -753924354, now seen corresponding path program 23 times [2021-03-10 22:17:58,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:58,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063489983] [2021-03-10 22:17:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:58,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063489983] [2021-03-10 22:17:58,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:58,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 22:17:58,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554839683] [2021-03-10 22:17:58,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 22:17:58,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:58,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 22:17:58,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:17:58,647 INFO L87 Difference]: Start difference. First operand 4729 states and 12589 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:58,663 INFO L93 Difference]: Finished difference Result 4385 states and 11455 transitions. [2021-03-10 22:17:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 22:17:58,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:58,669 INFO L225 Difference]: With dead ends: 4385 [2021-03-10 22:17:58,669 INFO L226 Difference]: Without dead ends: 4349 [2021-03-10 22:17:58,669 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:17:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2021-03-10 22:17:58,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 4349. [2021-03-10 22:17:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4349 states, 4348 states have (on average 2.6152253909843606) internal successors, (11371), 4348 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4349 states to 4349 states and 11371 transitions. [2021-03-10 22:17:58,775 INFO L78 Accepts]: Start accepts. Automaton has 4349 states and 11371 transitions. Word has length 48 [2021-03-10 22:17:58,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:58,776 INFO L480 AbstractCegarLoop]: Abstraction has 4349 states and 11371 transitions. [2021-03-10 22:17:58,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:58,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4349 states and 11371 transitions. [2021-03-10 22:17:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:58,781 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:58,781 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:58,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-10 22:17:58,781 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:58,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:58,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1793788158, now seen corresponding path program 24 times [2021-03-10 22:17:58,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:58,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275997064] [2021-03-10 22:17:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:58,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275997064] [2021-03-10 22:17:58,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:58,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:17:58,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555227239] [2021-03-10 22:17:58,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:17:58,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:58,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:17:58,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:58,936 INFO L87 Difference]: Start difference. First operand 4349 states and 11371 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:59,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:59,205 INFO L93 Difference]: Finished difference Result 4929 states and 12826 transitions. [2021-03-10 22:17:59,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:17:59,206 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:59,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:59,210 INFO L225 Difference]: With dead ends: 4929 [2021-03-10 22:17:59,210 INFO L226 Difference]: Without dead ends: 4830 [2021-03-10 22:17:59,211 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 149.1ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:17:59,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4830 states. [2021-03-10 22:17:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4830 to 4409. [2021-03-10 22:17:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 2.6138838475499093) internal successors, (11522), 4408 states have internal predecessors, (11522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:59,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 11522 transitions. [2021-03-10 22:17:59,293 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 11522 transitions. Word has length 48 [2021-03-10 22:17:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:59,293 INFO L480 AbstractCegarLoop]: Abstraction has 4409 states and 11522 transitions. [2021-03-10 22:17:59,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:59,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 11522 transitions. [2021-03-10 22:17:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:59,299 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:59,299 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:59,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-10 22:17:59,299 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:59,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1199910756, now seen corresponding path program 25 times [2021-03-10 22:17:59,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:59,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805372799] [2021-03-10 22:17:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:59,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805372799] [2021-03-10 22:17:59,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:59,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:17:59,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95223819] [2021-03-10 22:17:59,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:17:59,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:59,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:17:59,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:59,424 INFO L87 Difference]: Start difference. First operand 4409 states and 11522 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:17:59,678 INFO L93 Difference]: Finished difference Result 5085 states and 13221 transitions. [2021-03-10 22:17:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:17:59,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:17:59,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:17:59,684 INFO L225 Difference]: With dead ends: 5085 [2021-03-10 22:17:59,684 INFO L226 Difference]: Without dead ends: 4960 [2021-03-10 22:17:59,684 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:17:59,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4960 states. [2021-03-10 22:17:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4960 to 4302. [2021-03-10 22:17:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4301 states have (on average 2.619158335270867) internal successors, (11265), 4301 states have internal predecessors, (11265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 11265 transitions. [2021-03-10 22:17:59,776 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 11265 transitions. Word has length 48 [2021-03-10 22:17:59,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:17:59,777 INFO L480 AbstractCegarLoop]: Abstraction has 4302 states and 11265 transitions. [2021-03-10 22:17:59,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:17:59,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 11265 transitions. [2021-03-10 22:17:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:17:59,782 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:17:59,782 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:17:59,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-10 22:17:59,782 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:17:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:17:59,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1066921176, now seen corresponding path program 26 times [2021-03-10 22:17:59,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:17:59,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495557042] [2021-03-10 22:17:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:17:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:17:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:17:59,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495557042] [2021-03-10 22:17:59,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:17:59,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:17:59,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865416937] [2021-03-10 22:17:59,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:17:59,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:17:59,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:17:59,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:17:59,883 INFO L87 Difference]: Start difference. First operand 4302 states and 11265 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:00,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:00,164 INFO L93 Difference]: Finished difference Result 5200 states and 13496 transitions. [2021-03-10 22:18:00,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:18:00,165 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:00,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:00,171 INFO L225 Difference]: With dead ends: 5200 [2021-03-10 22:18:00,171 INFO L226 Difference]: Without dead ends: 5176 [2021-03-10 22:18:00,171 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:18:00,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2021-03-10 22:18:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 4401. [2021-03-10 22:18:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4400 states have (on average 2.613409090909091) internal successors, (11499), 4400 states have internal predecessors, (11499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 11499 transitions. [2021-03-10 22:18:00,251 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 11499 transitions. Word has length 48 [2021-03-10 22:18:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:00,252 INFO L480 AbstractCegarLoop]: Abstraction has 4401 states and 11499 transitions. [2021-03-10 22:18:00,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 11499 transitions. [2021-03-10 22:18:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:00,257 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:00,257 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:00,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-10 22:18:00,257 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:00,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:00,257 INFO L82 PathProgramCache]: Analyzing trace with hash 2124920470, now seen corresponding path program 27 times [2021-03-10 22:18:00,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:00,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541113490] [2021-03-10 22:18:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:00,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541113490] [2021-03-10 22:18:00,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:00,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:18:00,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959456595] [2021-03-10 22:18:00,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:18:00,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:00,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:18:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:00,354 INFO L87 Difference]: Start difference. First operand 4401 states and 11499 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:00,700 INFO L93 Difference]: Finished difference Result 5143 states and 13356 transitions. [2021-03-10 22:18:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:18:00,700 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:00,706 INFO L225 Difference]: With dead ends: 5143 [2021-03-10 22:18:00,706 INFO L226 Difference]: Without dead ends: 4862 [2021-03-10 22:18:00,706 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:18:00,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-03-10 22:18:00,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4146. [2021-03-10 22:18:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4146 states, 4145 states have (on average 2.6294330518697224) internal successors, (10899), 4145 states have internal predecessors, (10899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 10899 transitions. [2021-03-10 22:18:00,792 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 10899 transitions. Word has length 48 [2021-03-10 22:18:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:00,792 INFO L480 AbstractCegarLoop]: Abstraction has 4146 states and 10899 transitions. [2021-03-10 22:18:00,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 10899 transitions. [2021-03-10 22:18:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:00,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:00,797 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:00,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-10 22:18:00,797 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:00,797 INFO L82 PathProgramCache]: Analyzing trace with hash -117389724, now seen corresponding path program 28 times [2021-03-10 22:18:00,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:00,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384847594] [2021-03-10 22:18:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:00,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384847594] [2021-03-10 22:18:00,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:00,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:18:00,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824810119] [2021-03-10 22:18:00,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:18:00,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:00,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:18:00,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:00,918 INFO L87 Difference]: Start difference. First operand 4146 states and 10899 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:01,152 INFO L93 Difference]: Finished difference Result 4599 states and 12067 transitions. [2021-03-10 22:18:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:18:01,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:01,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:01,158 INFO L225 Difference]: With dead ends: 4599 [2021-03-10 22:18:01,158 INFO L226 Difference]: Without dead ends: 4462 [2021-03-10 22:18:01,158 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:18:01,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2021-03-10 22:18:01,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 4126. [2021-03-10 22:18:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4125 states have (on average 2.6324848484848484) internal successors, (10859), 4125 states have internal predecessors, (10859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 10859 transitions. [2021-03-10 22:18:01,244 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 10859 transitions. Word has length 48 [2021-03-10 22:18:01,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:01,244 INFO L480 AbstractCegarLoop]: Abstraction has 4126 states and 10859 transitions. [2021-03-10 22:18:01,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 10859 transitions. [2021-03-10 22:18:01,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:01,250 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:01,250 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:01,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-10 22:18:01,250 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:01,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:01,250 INFO L82 PathProgramCache]: Analyzing trace with hash 684571300, now seen corresponding path program 29 times [2021-03-10 22:18:01,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:01,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638033451] [2021-03-10 22:18:01,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:01,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638033451] [2021-03-10 22:18:01,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:01,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:18:01,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558335831] [2021-03-10 22:18:01,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:01,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:01,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:01,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:01,340 INFO L87 Difference]: Start difference. First operand 4126 states and 10859 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:01,517 INFO L93 Difference]: Finished difference Result 5973 states and 15884 transitions. [2021-03-10 22:18:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:18:01,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:01,522 INFO L225 Difference]: With dead ends: 5973 [2021-03-10 22:18:01,522 INFO L226 Difference]: Without dead ends: 5941 [2021-03-10 22:18:01,523 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 87.9ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5941 states. [2021-03-10 22:18:01,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5941 to 4709. [2021-03-10 22:18:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4709 states, 4708 states have (on average 2.6399745114698385) internal successors, (12429), 4708 states have internal predecessors, (12429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4709 states to 4709 states and 12429 transitions. [2021-03-10 22:18:01,614 INFO L78 Accepts]: Start accepts. Automaton has 4709 states and 12429 transitions. Word has length 48 [2021-03-10 22:18:01,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:01,614 INFO L480 AbstractCegarLoop]: Abstraction has 4709 states and 12429 transitions. [2021-03-10 22:18:01,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4709 states and 12429 transitions. [2021-03-10 22:18:01,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:01,618 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:01,619 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:01,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-10 22:18:01,619 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:01,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:01,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1536051876, now seen corresponding path program 30 times [2021-03-10 22:18:01,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:01,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965298705] [2021-03-10 22:18:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:01,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965298705] [2021-03-10 22:18:01,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:01,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:18:01,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222541190] [2021-03-10 22:18:01,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:01,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:01,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:01,705 INFO L87 Difference]: Start difference. First operand 4709 states and 12429 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:01,849 INFO L93 Difference]: Finished difference Result 6030 states and 15889 transitions. [2021-03-10 22:18:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:18:01,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:01,853 INFO L225 Difference]: With dead ends: 6030 [2021-03-10 22:18:01,853 INFO L226 Difference]: Without dead ends: 5625 [2021-03-10 22:18:01,854 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 76.8ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5625 states. [2021-03-10 22:18:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5625 to 4757. [2021-03-10 22:18:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4757 states, 4756 states have (on average 2.633305298570227) internal successors, (12524), 4756 states have internal predecessors, (12524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 12524 transitions. [2021-03-10 22:18:01,928 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 12524 transitions. Word has length 48 [2021-03-10 22:18:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:01,928 INFO L480 AbstractCegarLoop]: Abstraction has 4757 states and 12524 transitions. [2021-03-10 22:18:01,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 12524 transitions. [2021-03-10 22:18:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:01,931 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:01,932 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:01,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-10 22:18:01,932 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:01,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1240038748, now seen corresponding path program 31 times [2021-03-10 22:18:01,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:01,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358724470] [2021-03-10 22:18:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:02,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358724470] [2021-03-10 22:18:02,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:02,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:02,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11395639] [2021-03-10 22:18:02,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:02,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:02,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:02,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:02,043 INFO L87 Difference]: Start difference. First operand 4757 states and 12524 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:02,160 INFO L93 Difference]: Finished difference Result 5738 states and 15055 transitions. [2021-03-10 22:18:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:18:02,162 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:02,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:02,166 INFO L225 Difference]: With dead ends: 5738 [2021-03-10 22:18:02,167 INFO L226 Difference]: Without dead ends: 5686 [2021-03-10 22:18:02,167 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:02,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-03-10 22:18:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5042. [2021-03-10 22:18:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5042 states, 5041 states have (on average 2.6270581233882164) internal successors, (13243), 5041 states have internal predecessors, (13243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 13243 transitions. [2021-03-10 22:18:02,245 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 13243 transitions. Word has length 48 [2021-03-10 22:18:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:02,245 INFO L480 AbstractCegarLoop]: Abstraction has 5042 states and 13243 transitions. [2021-03-10 22:18:02,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 13243 transitions. [2021-03-10 22:18:02,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:02,251 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:02,251 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:02,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-10 22:18:02,251 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:02,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:02,251 INFO L82 PathProgramCache]: Analyzing trace with hash 61229634, now seen corresponding path program 32 times [2021-03-10 22:18:02,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:02,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187256978] [2021-03-10 22:18:02,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:02,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187256978] [2021-03-10 22:18:02,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:02,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:18:02,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125836555] [2021-03-10 22:18:02,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:02,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:02,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:02,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:02,332 INFO L87 Difference]: Start difference. First operand 5042 states and 13243 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:02,489 INFO L93 Difference]: Finished difference Result 5543 states and 14454 transitions. [2021-03-10 22:18:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:18:02,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:02,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:02,495 INFO L225 Difference]: With dead ends: 5543 [2021-03-10 22:18:02,495 INFO L226 Difference]: Without dead ends: 5280 [2021-03-10 22:18:02,496 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:02,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5280 states. [2021-03-10 22:18:02,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 4454. [2021-03-10 22:18:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 2.5969009656411406) internal successors, (11564), 4453 states have internal predecessors, (11564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11564 transitions. [2021-03-10 22:18:02,590 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11564 transitions. Word has length 48 [2021-03-10 22:18:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:02,590 INFO L480 AbstractCegarLoop]: Abstraction has 4454 states and 11564 transitions. [2021-03-10 22:18:02,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11564 transitions. [2021-03-10 22:18:02,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:02,595 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:02,595 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:02,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-10 22:18:02,595 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:02,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:02,596 INFO L82 PathProgramCache]: Analyzing trace with hash -999562176, now seen corresponding path program 33 times [2021-03-10 22:18:02,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:02,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612230755] [2021-03-10 22:18:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:02,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612230755] [2021-03-10 22:18:02,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:02,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:18:02,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971518097] [2021-03-10 22:18:02,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:02,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:02,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:02,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:02,666 INFO L87 Difference]: Start difference. First operand 4454 states and 11564 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:02,906 INFO L93 Difference]: Finished difference Result 6116 states and 15828 transitions. [2021-03-10 22:18:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:18:02,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:02,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:02,911 INFO L225 Difference]: With dead ends: 6116 [2021-03-10 22:18:02,911 INFO L226 Difference]: Without dead ends: 5989 [2021-03-10 22:18:02,912 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:18:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5989 states. [2021-03-10 22:18:02,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 4592. [2021-03-10 22:18:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 4591 states have (on average 2.6003049444565454) internal successors, (11938), 4591 states have internal predecessors, (11938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 11938 transitions. [2021-03-10 22:18:02,994 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 11938 transitions. Word has length 48 [2021-03-10 22:18:02,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:02,994 INFO L480 AbstractCegarLoop]: Abstraction has 4592 states and 11938 transitions. [2021-03-10 22:18:02,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:02,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 11938 transitions. [2021-03-10 22:18:02,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:02,998 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:02,998 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:02,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-10 22:18:02,998 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:02,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:02,998 INFO L82 PathProgramCache]: Analyzing trace with hash 76293474, now seen corresponding path program 34 times [2021-03-10 22:18:02,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:02,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294243972] [2021-03-10 22:18:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:03,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294243972] [2021-03-10 22:18:03,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:03,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 22:18:03,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739205114] [2021-03-10 22:18:03,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 22:18:03,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:03,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 22:18:03,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:18:03,008 INFO L87 Difference]: Start difference. First operand 4592 states and 11938 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:03,021 INFO L93 Difference]: Finished difference Result 4428 states and 11266 transitions. [2021-03-10 22:18:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 22:18:03,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:03,026 INFO L225 Difference]: With dead ends: 4428 [2021-03-10 22:18:03,026 INFO L226 Difference]: Without dead ends: 4428 [2021-03-10 22:18:03,026 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:18:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2021-03-10 22:18:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4428. [2021-03-10 22:18:03,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4427 states have (on average 2.544838491077479) internal successors, (11266), 4427 states have internal predecessors, (11266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 11266 transitions. [2021-03-10 22:18:03,086 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 11266 transitions. Word has length 48 [2021-03-10 22:18:03,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:03,086 INFO L480 AbstractCegarLoop]: Abstraction has 4428 states and 11266 transitions. [2021-03-10 22:18:03,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:03,086 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 11266 transitions. [2021-03-10 22:18:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:03,089 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:03,089 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:03,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-10 22:18:03,089 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:03,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:03,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1673336162, now seen corresponding path program 35 times [2021-03-10 22:18:03,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:03,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966341790] [2021-03-10 22:18:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:03,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966341790] [2021-03-10 22:18:03,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:03,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:03,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946671484] [2021-03-10 22:18:03,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:03,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:03,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:03,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:03,150 INFO L87 Difference]: Start difference. First operand 4428 states and 11266 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:03,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:03,295 INFO L93 Difference]: Finished difference Result 5284 states and 13236 transitions. [2021-03-10 22:18:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:18:03,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:03,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:03,301 INFO L225 Difference]: With dead ends: 5284 [2021-03-10 22:18:03,302 INFO L226 Difference]: Without dead ends: 4898 [2021-03-10 22:18:03,302 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:18:03,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-03-10 22:18:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 4331. [2021-03-10 22:18:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 2.5293302540415703) internal successors, (10952), 4330 states have internal predecessors, (10952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 10952 transitions. [2021-03-10 22:18:03,380 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 10952 transitions. Word has length 48 [2021-03-10 22:18:03,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:03,380 INFO L480 AbstractCegarLoop]: Abstraction has 4331 states and 10952 transitions. [2021-03-10 22:18:03,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 10952 transitions. [2021-03-10 22:18:03,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:03,385 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:03,385 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:03,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-10 22:18:03,385 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:03,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:03,385 INFO L82 PathProgramCache]: Analyzing trace with hash -869937714, now seen corresponding path program 36 times [2021-03-10 22:18:03,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:03,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612373557] [2021-03-10 22:18:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:03,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612373557] [2021-03-10 22:18:03,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:03,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:03,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416392844] [2021-03-10 22:18:03,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:03,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:03,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:03,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:03,454 INFO L87 Difference]: Start difference. First operand 4331 states and 10952 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:03,660 INFO L93 Difference]: Finished difference Result 6472 states and 16461 transitions. [2021-03-10 22:18:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:18:03,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:03,665 INFO L225 Difference]: With dead ends: 6472 [2021-03-10 22:18:03,665 INFO L226 Difference]: Without dead ends: 6307 [2021-03-10 22:18:03,665 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 79.7ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:18:03,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2021-03-10 22:18:03,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 4048. [2021-03-10 22:18:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 4047 states have (on average 2.520138374104275) internal successors, (10199), 4047 states have internal predecessors, (10199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 10199 transitions. [2021-03-10 22:18:03,759 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 10199 transitions. Word has length 48 [2021-03-10 22:18:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:03,759 INFO L480 AbstractCegarLoop]: Abstraction has 4048 states and 10199 transitions. [2021-03-10 22:18:03,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 10199 transitions. [2021-03-10 22:18:03,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:03,763 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:03,764 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:03,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-10 22:18:03,764 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:03,764 INFO L82 PathProgramCache]: Analyzing trace with hash -221230618, now seen corresponding path program 37 times [2021-03-10 22:18:03,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:03,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680478483] [2021-03-10 22:18:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:03,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680478483] [2021-03-10 22:18:03,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:03,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:03,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371385300] [2021-03-10 22:18:03,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:03,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:03,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:03,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:03,862 INFO L87 Difference]: Start difference. First operand 4048 states and 10199 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:04,153 INFO L93 Difference]: Finished difference Result 6462 states and 16010 transitions. [2021-03-10 22:18:04,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:18:04,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:04,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:04,160 INFO L225 Difference]: With dead ends: 6462 [2021-03-10 22:18:04,160 INFO L226 Difference]: Without dead ends: 6370 [2021-03-10 22:18:04,160 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:18:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2021-03-10 22:18:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 4653. [2021-03-10 22:18:04,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 4652 states have (on average 2.498065348237317) internal successors, (11621), 4652 states have internal predecessors, (11621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 11621 transitions. [2021-03-10 22:18:04,229 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 11621 transitions. Word has length 48 [2021-03-10 22:18:04,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:04,229 INFO L480 AbstractCegarLoop]: Abstraction has 4653 states and 11621 transitions. [2021-03-10 22:18:04,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 11621 transitions. [2021-03-10 22:18:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:04,232 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:04,232 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:04,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-10 22:18:04,233 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:04,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:04,233 INFO L82 PathProgramCache]: Analyzing trace with hash 2020828136, now seen corresponding path program 38 times [2021-03-10 22:18:04,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:04,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059785223] [2021-03-10 22:18:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:04,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059785223] [2021-03-10 22:18:04,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:04,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:04,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996991062] [2021-03-10 22:18:04,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:04,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:04,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:04,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:04,332 INFO L87 Difference]: Start difference. First operand 4653 states and 11621 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:04,577 INFO L93 Difference]: Finished difference Result 6009 states and 14745 transitions. [2021-03-10 22:18:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:18:04,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:04,582 INFO L225 Difference]: With dead ends: 6009 [2021-03-10 22:18:04,582 INFO L226 Difference]: Without dead ends: 5842 [2021-03-10 22:18:04,582 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:18:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5842 states. [2021-03-10 22:18:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5842 to 4556. [2021-03-10 22:18:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 4555 states have (on average 2.4990120746432494) internal successors, (11383), 4555 states have internal predecessors, (11383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 11383 transitions. [2021-03-10 22:18:04,648 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 11383 transitions. Word has length 48 [2021-03-10 22:18:04,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:04,648 INFO L480 AbstractCegarLoop]: Abstraction has 4556 states and 11383 transitions. [2021-03-10 22:18:04,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 11383 transitions. [2021-03-10 22:18:04,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:04,651 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:04,652 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:04,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-10 22:18:04,652 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:04,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:04,652 INFO L82 PathProgramCache]: Analyzing trace with hash -458909894, now seen corresponding path program 39 times [2021-03-10 22:18:04,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:04,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23194783] [2021-03-10 22:18:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:04,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23194783] [2021-03-10 22:18:04,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:04,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:04,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63273216] [2021-03-10 22:18:04,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:04,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:04,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:04,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:04,711 INFO L87 Difference]: Start difference. First operand 4556 states and 11383 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:04,845 INFO L93 Difference]: Finished difference Result 5244 states and 12929 transitions. [2021-03-10 22:18:04,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:18:04,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:04,850 INFO L225 Difference]: With dead ends: 5244 [2021-03-10 22:18:04,850 INFO L226 Difference]: Without dead ends: 5114 [2021-03-10 22:18:04,851 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:18:04,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5114 states. [2021-03-10 22:18:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5114 to 4563. [2021-03-10 22:18:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4562 states have (on average 2.493643138974134) internal successors, (11376), 4562 states have internal predecessors, (11376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 11376 transitions. [2021-03-10 22:18:04,908 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 11376 transitions. Word has length 48 [2021-03-10 22:18:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:04,909 INFO L480 AbstractCegarLoop]: Abstraction has 4563 states and 11376 transitions. [2021-03-10 22:18:04,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:04,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 11376 transitions. [2021-03-10 22:18:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:04,912 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:04,912 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:04,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-10 22:18:04,912 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:04,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:04,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1054099754, now seen corresponding path program 40 times [2021-03-10 22:18:04,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:04,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090549555] [2021-03-10 22:18:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:04,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090549555] [2021-03-10 22:18:04,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:04,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:18:04,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821538572] [2021-03-10 22:18:04,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:04,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:04,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:04,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:04,983 INFO L87 Difference]: Start difference. First operand 4563 states and 11376 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:05,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:05,282 INFO L93 Difference]: Finished difference Result 5431 states and 13325 transitions. [2021-03-10 22:18:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:18:05,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:05,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:05,287 INFO L225 Difference]: With dead ends: 5431 [2021-03-10 22:18:05,287 INFO L226 Difference]: Without dead ends: 5375 [2021-03-10 22:18:05,288 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:18:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5375 states. [2021-03-10 22:18:05,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5375 to 4647. [2021-03-10 22:18:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4647 states, 4646 states have (on average 2.483426603529918) internal successors, (11538), 4646 states have internal predecessors, (11538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 11538 transitions. [2021-03-10 22:18:05,373 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 11538 transitions. Word has length 48 [2021-03-10 22:18:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:05,373 INFO L480 AbstractCegarLoop]: Abstraction has 4647 states and 11538 transitions. [2021-03-10 22:18:05,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 11538 transitions. [2021-03-10 22:18:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:05,377 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:05,377 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:05,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-10 22:18:05,378 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:05,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:05,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1231787908, now seen corresponding path program 41 times [2021-03-10 22:18:05,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:05,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310962022] [2021-03-10 22:18:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:05,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310962022] [2021-03-10 22:18:05,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:05,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:05,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143765053] [2021-03-10 22:18:05,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:05,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:05,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:05,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:05,469 INFO L87 Difference]: Start difference. First operand 4647 states and 11538 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:05,737 INFO L93 Difference]: Finished difference Result 5656 states and 13754 transitions. [2021-03-10 22:18:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:18:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:05,742 INFO L225 Difference]: With dead ends: 5656 [2021-03-10 22:18:05,743 INFO L226 Difference]: Without dead ends: 5570 [2021-03-10 22:18:05,743 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:18:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2021-03-10 22:18:05,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 4627. [2021-03-10 22:18:05,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4626 states have (on average 2.470817120622568) internal successors, (11430), 4626 states have internal predecessors, (11430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 11430 transitions. [2021-03-10 22:18:05,810 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 11430 transitions. Word has length 48 [2021-03-10 22:18:05,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:05,810 INFO L480 AbstractCegarLoop]: Abstraction has 4627 states and 11430 transitions. [2021-03-10 22:18:05,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 11430 transitions. [2021-03-10 22:18:05,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:05,814 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:05,814 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:05,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-10 22:18:05,814 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:05,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:05,814 INFO L82 PathProgramCache]: Analyzing trace with hash -821120634, now seen corresponding path program 42 times [2021-03-10 22:18:05,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:05,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944165487] [2021-03-10 22:18:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:05,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944165487] [2021-03-10 22:18:05,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:05,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:05,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958162241] [2021-03-10 22:18:05,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:05,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:05,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:05,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:05,910 INFO L87 Difference]: Start difference. First operand 4627 states and 11430 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:06,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:06,110 INFO L93 Difference]: Finished difference Result 5170 states and 12444 transitions. [2021-03-10 22:18:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 22:18:06,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:06,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:06,114 INFO L225 Difference]: With dead ends: 5170 [2021-03-10 22:18:06,114 INFO L226 Difference]: Without dead ends: 5005 [2021-03-10 22:18:06,115 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:18:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5005 states. [2021-03-10 22:18:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5005 to 3937. [2021-03-10 22:18:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3937 states, 3936 states have (on average 2.448932926829268) internal successors, (9639), 3936 states have internal predecessors, (9639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 9639 transitions. [2021-03-10 22:18:06,171 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 9639 transitions. Word has length 48 [2021-03-10 22:18:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:06,171 INFO L480 AbstractCegarLoop]: Abstraction has 3937 states and 9639 transitions. [2021-03-10 22:18:06,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 9639 transitions. [2021-03-10 22:18:06,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:06,174 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:06,175 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:06,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-10 22:18:06,175 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:06,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:06,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1660476924, now seen corresponding path program 43 times [2021-03-10 22:18:06,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:06,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327222798] [2021-03-10 22:18:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:06,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327222798] [2021-03-10 22:18:06,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:06,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:18:06,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516407715] [2021-03-10 22:18:06,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:18:06,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:18:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:06,296 INFO L87 Difference]: Start difference. First operand 3937 states and 9639 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:06,676 INFO L93 Difference]: Finished difference Result 6173 states and 14834 transitions. [2021-03-10 22:18:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 22:18:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:06,680 INFO L225 Difference]: With dead ends: 6173 [2021-03-10 22:18:06,680 INFO L226 Difference]: Without dead ends: 5460 [2021-03-10 22:18:06,681 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 194.4ms TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-03-10 22:18:06,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 3857. [2021-03-10 22:18:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3857 states, 3856 states have (on average 2.4517634854771786) internal successors, (9454), 3856 states have internal predecessors, (9454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 9454 transitions. [2021-03-10 22:18:06,739 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 9454 transitions. Word has length 48 [2021-03-10 22:18:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:06,739 INFO L480 AbstractCegarLoop]: Abstraction has 3857 states and 9454 transitions. [2021-03-10 22:18:06,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 9454 transitions. [2021-03-10 22:18:06,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:06,742 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:06,743 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:06,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-10 22:18:06,743 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:06,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:06,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1838280150, now seen corresponding path program 44 times [2021-03-10 22:18:06,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:06,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009072322] [2021-03-10 22:18:06,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:06,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009072322] [2021-03-10 22:18:06,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:06,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:18:06,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140426525] [2021-03-10 22:18:06,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:06,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:06,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:06,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:06,810 INFO L87 Difference]: Start difference. First operand 3857 states and 9454 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:07,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:07,018 INFO L93 Difference]: Finished difference Result 6363 states and 15371 transitions. [2021-03-10 22:18:07,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:18:07,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:07,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:07,026 INFO L225 Difference]: With dead ends: 6363 [2021-03-10 22:18:07,026 INFO L226 Difference]: Without dead ends: 6304 [2021-03-10 22:18:07,026 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 73.1ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:07,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6304 states. [2021-03-10 22:18:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6304 to 3838. [2021-03-10 22:18:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 2.4516549387542352) internal successors, (9407), 3837 states have internal predecessors, (9407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 9407 transitions. [2021-03-10 22:18:07,115 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 9407 transitions. Word has length 48 [2021-03-10 22:18:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:07,115 INFO L480 AbstractCegarLoop]: Abstraction has 3838 states and 9407 transitions. [2021-03-10 22:18:07,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 9407 transitions. [2021-03-10 22:18:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:07,119 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:07,119 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:07,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-10 22:18:07,120 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:07,121 INFO L82 PathProgramCache]: Analyzing trace with hash -163243666, now seen corresponding path program 45 times [2021-03-10 22:18:07,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:07,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133043116] [2021-03-10 22:18:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:07,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133043116] [2021-03-10 22:18:07,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:07,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:07,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126878609] [2021-03-10 22:18:07,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:07,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:07,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:07,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:07,181 INFO L87 Difference]: Start difference. First operand 3838 states and 9407 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:07,339 INFO L93 Difference]: Finished difference Result 4459 states and 10799 transitions. [2021-03-10 22:18:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:18:07,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:07,344 INFO L225 Difference]: With dead ends: 4459 [2021-03-10 22:18:07,344 INFO L226 Difference]: Without dead ends: 4059 [2021-03-10 22:18:07,344 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:18:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2021-03-10 22:18:07,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 3663. [2021-03-10 22:18:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 3662 states have (on average 2.4199890770071) internal successors, (8862), 3662 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 8862 transitions. [2021-03-10 22:18:07,415 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 8862 transitions. Word has length 48 [2021-03-10 22:18:07,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:07,415 INFO L480 AbstractCegarLoop]: Abstraction has 3663 states and 8862 transitions. [2021-03-10 22:18:07,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:07,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 8862 transitions. [2021-03-10 22:18:07,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:07,419 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:07,419 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:07,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-10 22:18:07,419 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:07,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1076849684, now seen corresponding path program 46 times [2021-03-10 22:18:07,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:07,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390503575] [2021-03-10 22:18:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:07,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390503575] [2021-03-10 22:18:07,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:07,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:18:07,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215585245] [2021-03-10 22:18:07,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:18:07,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:07,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:18:07,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:07,522 INFO L87 Difference]: Start difference. First operand 3663 states and 8862 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:07,925 INFO L93 Difference]: Finished difference Result 7113 states and 16874 transitions. [2021-03-10 22:18:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 22:18:07,925 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:07,931 INFO L225 Difference]: With dead ends: 7113 [2021-03-10 22:18:07,932 INFO L226 Difference]: Without dead ends: 6604 [2021-03-10 22:18:07,932 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 232.6ms TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2021-03-10 22:18:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2021-03-10 22:18:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 4092. [2021-03-10 22:18:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4092 states, 4091 states have (on average 2.3967245172329505) internal successors, (9805), 4091 states have internal predecessors, (9805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 9805 transitions. [2021-03-10 22:18:08,015 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 9805 transitions. Word has length 48 [2021-03-10 22:18:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:08,015 INFO L480 AbstractCegarLoop]: Abstraction has 4092 states and 9805 transitions. [2021-03-10 22:18:08,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 9805 transitions. [2021-03-10 22:18:08,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:08,018 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:08,018 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:08,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-10 22:18:08,018 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:08,018 INFO L82 PathProgramCache]: Analyzing trace with hash 527044882, now seen corresponding path program 47 times [2021-03-10 22:18:08,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:08,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017237126] [2021-03-10 22:18:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:08,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017237126] [2021-03-10 22:18:08,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:08,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:18:08,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704684683] [2021-03-10 22:18:08,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:18:08,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:08,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:18:08,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:08,121 INFO L87 Difference]: Start difference. First operand 4092 states and 9805 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:08,527 INFO L93 Difference]: Finished difference Result 6033 states and 14232 transitions. [2021-03-10 22:18:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 22:18:08,528 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:08,532 INFO L225 Difference]: With dead ends: 6033 [2021-03-10 22:18:08,532 INFO L226 Difference]: Without dead ends: 5614 [2021-03-10 22:18:08,533 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 248.0ms TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2021-03-10 22:18:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-03-10 22:18:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 3682. [2021-03-10 22:18:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3681 states have (on average 2.3993480032599837) internal successors, (8832), 3681 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 8832 transitions. [2021-03-10 22:18:08,592 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 8832 transitions. Word has length 48 [2021-03-10 22:18:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:08,592 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 8832 transitions. [2021-03-10 22:18:08,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 8832 transitions. [2021-03-10 22:18:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:08,595 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:08,595 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:08,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-10 22:18:08,595 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:08,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1279163436, now seen corresponding path program 48 times [2021-03-10 22:18:08,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:08,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683670956] [2021-03-10 22:18:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:08,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683670956] [2021-03-10 22:18:08,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:08,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:18:08,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134326894] [2021-03-10 22:18:08,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:18:08,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:08,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:18:08,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:08,700 INFO L87 Difference]: Start difference. First operand 3682 states and 8832 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:09,210 INFO L93 Difference]: Finished difference Result 5430 states and 12727 transitions. [2021-03-10 22:18:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 22:18:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:09,214 INFO L225 Difference]: With dead ends: 5430 [2021-03-10 22:18:09,214 INFO L226 Difference]: Without dead ends: 5065 [2021-03-10 22:18:09,215 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 324.1ms TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:18:09,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5065 states. [2021-03-10 22:18:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5065 to 3634. [2021-03-10 22:18:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 2.374896779521057) internal successors, (8628), 3633 states have internal predecessors, (8628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 8628 transitions. [2021-03-10 22:18:09,272 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 8628 transitions. Word has length 48 [2021-03-10 22:18:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:09,272 INFO L480 AbstractCegarLoop]: Abstraction has 3634 states and 8628 transitions. [2021-03-10 22:18:09,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 8628 transitions. [2021-03-10 22:18:09,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:09,275 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:09,275 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:09,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-10 22:18:09,275 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:09,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1828968238, now seen corresponding path program 49 times [2021-03-10 22:18:09,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:09,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123000382] [2021-03-10 22:18:09,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:09,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123000382] [2021-03-10 22:18:09,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:09,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:18:09,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32548755] [2021-03-10 22:18:09,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:18:09,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:09,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:18:09,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:09,373 INFO L87 Difference]: Start difference. First operand 3634 states and 8628 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:09,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:09,810 INFO L93 Difference]: Finished difference Result 4576 states and 10666 transitions. [2021-03-10 22:18:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 22:18:09,811 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:09,813 INFO L225 Difference]: With dead ends: 4576 [2021-03-10 22:18:09,813 INFO L226 Difference]: Without dead ends: 4099 [2021-03-10 22:18:09,814 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 250.6ms TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2021-03-10 22:18:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2021-03-10 22:18:09,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 2987. [2021-03-10 22:18:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2986 states have (on average 2.356664434025452) internal successors, (7037), 2986 states have internal predecessors, (7037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 7037 transitions. [2021-03-10 22:18:09,862 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 7037 transitions. Word has length 48 [2021-03-10 22:18:09,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:09,862 INFO L480 AbstractCegarLoop]: Abstraction has 2987 states and 7037 transitions. [2021-03-10 22:18:09,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:09,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 7037 transitions. [2021-03-10 22:18:09,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:09,865 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:09,865 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:09,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-10 22:18:09,865 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:09,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1975627390, now seen corresponding path program 50 times [2021-03-10 22:18:09,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:09,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253919789] [2021-03-10 22:18:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:09,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253919789] [2021-03-10 22:18:09,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:09,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:18:09,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194227811] [2021-03-10 22:18:09,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:18:09,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:09,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:18:09,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:09,973 INFO L87 Difference]: Start difference. First operand 2987 states and 7037 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:10,074 INFO L93 Difference]: Finished difference Result 2987 states and 7019 transitions. [2021-03-10 22:18:10,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:18:10,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:10,077 INFO L225 Difference]: With dead ends: 2987 [2021-03-10 22:18:10,077 INFO L226 Difference]: Without dead ends: 2805 [2021-03-10 22:18:10,077 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2021-03-10 22:18:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2805. [2021-03-10 22:18:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2804 states have (on average 2.3619828815977177) internal successors, (6623), 2804 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 6623 transitions. [2021-03-10 22:18:10,109 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 6623 transitions. Word has length 48 [2021-03-10 22:18:10,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:10,109 INFO L480 AbstractCegarLoop]: Abstraction has 2805 states and 6623 transitions. [2021-03-10 22:18:10,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 6623 transitions. [2021-03-10 22:18:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:10,111 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:10,111 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:10,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-10 22:18:10,111 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:10,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:10,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1527737234, now seen corresponding path program 51 times [2021-03-10 22:18:10,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:10,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125475462] [2021-03-10 22:18:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:10,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125475462] [2021-03-10 22:18:10,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:10,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:10,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392277392] [2021-03-10 22:18:10,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:10,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:10,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:10,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:10,172 INFO L87 Difference]: Start difference. First operand 2805 states and 6623 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:10,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:10,300 INFO L93 Difference]: Finished difference Result 3229 states and 7522 transitions. [2021-03-10 22:18:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:18:10,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:10,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:10,303 INFO L225 Difference]: With dead ends: 3229 [2021-03-10 22:18:10,303 INFO L226 Difference]: Without dead ends: 2714 [2021-03-10 22:18:10,303 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:18:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2021-03-10 22:18:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2279. [2021-03-10 22:18:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 2.320017559262511) internal successors, (5285), 2278 states have internal predecessors, (5285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 5285 transitions. [2021-03-10 22:18:10,334 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 5285 transitions. Word has length 48 [2021-03-10 22:18:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:10,334 INFO L480 AbstractCegarLoop]: Abstraction has 2279 states and 5285 transitions. [2021-03-10 22:18:10,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 5285 transitions. [2021-03-10 22:18:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:10,336 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:10,336 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:10,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-10 22:18:10,336 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:10,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1742602862, now seen corresponding path program 52 times [2021-03-10 22:18:10,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:10,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033343283] [2021-03-10 22:18:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:10,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033343283] [2021-03-10 22:18:10,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:10,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:18:10,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592560078] [2021-03-10 22:18:10,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:10,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:10,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:10,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:10,428 INFO L87 Difference]: Start difference. First operand 2279 states and 5285 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:10,602 INFO L93 Difference]: Finished difference Result 2208 states and 5049 transitions. [2021-03-10 22:18:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:18:10,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:10,605 INFO L225 Difference]: With dead ends: 2208 [2021-03-10 22:18:10,605 INFO L226 Difference]: Without dead ends: 2020 [2021-03-10 22:18:10,605 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:18:10,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2021-03-10 22:18:10,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2021-03-10 22:18:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2019 states have (on average 2.2902426944031697) internal successors, (4624), 2019 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 4624 transitions. [2021-03-10 22:18:10,636 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 4624 transitions. Word has length 48 [2021-03-10 22:18:10,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:10,636 INFO L480 AbstractCegarLoop]: Abstraction has 2020 states and 4624 transitions. [2021-03-10 22:18:10,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 4624 transitions. [2021-03-10 22:18:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:10,638 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:10,638 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:10,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-10 22:18:10,638 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:10,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:10,638 INFO L82 PathProgramCache]: Analyzing trace with hash 668037194, now seen corresponding path program 53 times [2021-03-10 22:18:10,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:10,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264256631] [2021-03-10 22:18:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:10,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264256631] [2021-03-10 22:18:10,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:10,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:10,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062471810] [2021-03-10 22:18:10,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:10,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:10,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:10,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:10,784 INFO L87 Difference]: Start difference. First operand 2020 states and 4624 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:11,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:11,020 INFO L93 Difference]: Finished difference Result 2218 states and 4973 transitions. [2021-03-10 22:18:11,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:18:11,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:11,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:11,022 INFO L225 Difference]: With dead ends: 2218 [2021-03-10 22:18:11,022 INFO L226 Difference]: Without dead ends: 1636 [2021-03-10 22:18:11,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 192.4ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:18:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-03-10 22:18:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1526. [2021-03-10 22:18:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 2.2485245901639344) internal successors, (3429), 1525 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 3429 transitions. [2021-03-10 22:18:11,037 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 3429 transitions. Word has length 48 [2021-03-10 22:18:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:11,037 INFO L480 AbstractCegarLoop]: Abstraction has 1526 states and 3429 transitions. [2021-03-10 22:18:11,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:11,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 3429 transitions. [2021-03-10 22:18:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:11,039 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:11,039 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:11,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-10 22:18:11,039 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:11,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:11,039 INFO L82 PathProgramCache]: Analyzing trace with hash 736907338, now seen corresponding path program 54 times [2021-03-10 22:18:11,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:11,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540629596] [2021-03-10 22:18:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:11,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540629596] [2021-03-10 22:18:11,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:11,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:18:11,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939763228] [2021-03-10 22:18:11,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:18:11,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:11,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:18:11,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:11,284 INFO L87 Difference]: Start difference. First operand 1526 states and 3429 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:11,531 INFO L93 Difference]: Finished difference Result 1680 states and 3761 transitions. [2021-03-10 22:18:11,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:18:11,532 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:11,533 INFO L225 Difference]: With dead ends: 1680 [2021-03-10 22:18:11,533 INFO L226 Difference]: Without dead ends: 1620 [2021-03-10 22:18:11,534 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 248.2ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:18:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2021-03-10 22:18:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1530. [2021-03-10 22:18:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 2.2465663832570306) internal successors, (3435), 1529 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 3435 transitions. [2021-03-10 22:18:11,550 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 3435 transitions. Word has length 48 [2021-03-10 22:18:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:11,551 INFO L480 AbstractCegarLoop]: Abstraction has 1530 states and 3435 transitions. [2021-03-10 22:18:11,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 3435 transitions. [2021-03-10 22:18:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:11,552 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:11,552 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:11,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-10 22:18:11,552 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:11,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1353956312, now seen corresponding path program 55 times [2021-03-10 22:18:11,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:11,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194498160] [2021-03-10 22:18:11,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:11,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194498160] [2021-03-10 22:18:11,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:11,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:18:11,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612835827] [2021-03-10 22:18:11,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:18:11,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:11,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:18:11,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:11,773 INFO L87 Difference]: Start difference. First operand 1530 states and 3435 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:11,989 INFO L93 Difference]: Finished difference Result 1640 states and 3667 transitions. [2021-03-10 22:18:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:18:11,989 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:11,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:11,990 INFO L225 Difference]: With dead ends: 1640 [2021-03-10 22:18:11,990 INFO L226 Difference]: Without dead ends: 1588 [2021-03-10 22:18:11,991 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 245.4ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:18:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-03-10 22:18:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1542. [2021-03-10 22:18:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 2.2407527579493833) internal successors, (3453), 1541 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 3453 transitions. [2021-03-10 22:18:12,006 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 3453 transitions. Word has length 48 [2021-03-10 22:18:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:12,006 INFO L480 AbstractCegarLoop]: Abstraction has 1542 states and 3453 transitions. [2021-03-10 22:18:12,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 3453 transitions. [2021-03-10 22:18:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:12,007 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:12,007 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:12,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-10 22:18:12,007 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:12,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1517105260, now seen corresponding path program 56 times [2021-03-10 22:18:12,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:12,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998410991] [2021-03-10 22:18:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:12,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:12,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998410991] [2021-03-10 22:18:12,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:12,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:12,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358568251] [2021-03-10 22:18:12,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:12,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:12,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:12,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:12,097 INFO L87 Difference]: Start difference. First operand 1542 states and 3453 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:12,202 INFO L93 Difference]: Finished difference Result 1542 states and 3449 transitions. [2021-03-10 22:18:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:18:12,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:12,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:12,204 INFO L225 Difference]: With dead ends: 1542 [2021-03-10 22:18:12,204 INFO L226 Difference]: Without dead ends: 1517 [2021-03-10 22:18:12,204 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 62.6ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-03-10 22:18:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1517. [2021-03-10 22:18:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 2.246701846965699) internal successors, (3406), 1516 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 3406 transitions. [2021-03-10 22:18:12,221 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 3406 transitions. Word has length 48 [2021-03-10 22:18:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:12,222 INFO L480 AbstractCegarLoop]: Abstraction has 1517 states and 3406 transitions. [2021-03-10 22:18:12,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 3406 transitions. [2021-03-10 22:18:12,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:12,223 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:12,223 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:12,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-10 22:18:12,223 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:12,223 INFO L82 PathProgramCache]: Analyzing trace with hash 284530450, now seen corresponding path program 57 times [2021-03-10 22:18:12,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:12,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605874000] [2021-03-10 22:18:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:12,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605874000] [2021-03-10 22:18:12,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:12,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:18:12,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040813689] [2021-03-10 22:18:12,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:18:12,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:12,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:18:12,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:12,316 INFO L87 Difference]: Start difference. First operand 1517 states and 3406 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:12,465 INFO L93 Difference]: Finished difference Result 1584 states and 3548 transitions. [2021-03-10 22:18:12,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:18:12,466 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:12,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:12,467 INFO L225 Difference]: With dead ends: 1584 [2021-03-10 22:18:12,467 INFO L226 Difference]: Without dead ends: 1536 [2021-03-10 22:18:12,467 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-03-10 22:18:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1511. [2021-03-10 22:18:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 2.2437086092715233) internal successors, (3388), 1510 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 3388 transitions. [2021-03-10 22:18:12,482 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 3388 transitions. Word has length 48 [2021-03-10 22:18:12,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:12,482 INFO L480 AbstractCegarLoop]: Abstraction has 1511 states and 3388 transitions. [2021-03-10 22:18:12,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 3388 transitions. [2021-03-10 22:18:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:12,483 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:12,483 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:12,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-10 22:18:12,483 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:12,484 INFO L82 PathProgramCache]: Analyzing trace with hash 160779060, now seen corresponding path program 58 times [2021-03-10 22:18:12,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:12,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684027948] [2021-03-10 22:18:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:12,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684027948] [2021-03-10 22:18:12,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:12,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:18:12,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092653161] [2021-03-10 22:18:12,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:18:12,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:12,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:18:12,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:12,571 INFO L87 Difference]: Start difference. First operand 1511 states and 3388 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:12,725 INFO L93 Difference]: Finished difference Result 1594 states and 3546 transitions. [2021-03-10 22:18:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:18:12,725 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:12,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:12,726 INFO L225 Difference]: With dead ends: 1594 [2021-03-10 22:18:12,726 INFO L226 Difference]: Without dead ends: 1420 [2021-03-10 22:18:12,727 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-03-10 22:18:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1397. [2021-03-10 22:18:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 2.23567335243553) internal successors, (3121), 1396 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3121 transitions. [2021-03-10 22:18:12,745 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3121 transitions. Word has length 48 [2021-03-10 22:18:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:12,745 INFO L480 AbstractCegarLoop]: Abstraction has 1397 states and 3121 transitions. [2021-03-10 22:18:12,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3121 transitions. [2021-03-10 22:18:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:12,746 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:12,747 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:12,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-10 22:18:12,747 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash 983019946, now seen corresponding path program 59 times [2021-03-10 22:18:12,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:12,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96878350] [2021-03-10 22:18:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:12,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96878350] [2021-03-10 22:18:12,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:12,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:18:12,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055101796] [2021-03-10 22:18:12,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:12,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:12,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:12,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:12,863 INFO L87 Difference]: Start difference. First operand 1397 states and 3121 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:12,931 INFO L93 Difference]: Finished difference Result 1479 states and 3294 transitions. [2021-03-10 22:18:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:18:12,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:12,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:12,933 INFO L225 Difference]: With dead ends: 1479 [2021-03-10 22:18:12,933 INFO L226 Difference]: Without dead ends: 1328 [2021-03-10 22:18:12,933 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 86.1ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:12,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-03-10 22:18:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1328. [2021-03-10 22:18:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1327 states have (on average 2.235116804822909) internal successors, (2966), 1327 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2966 transitions. [2021-03-10 22:18:12,948 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2966 transitions. Word has length 48 [2021-03-10 22:18:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:12,948 INFO L480 AbstractCegarLoop]: Abstraction has 1328 states and 2966 transitions. [2021-03-10 22:18:12,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2966 transitions. [2021-03-10 22:18:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:12,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:12,949 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:12,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-10 22:18:12,949 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:12,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:12,950 INFO L82 PathProgramCache]: Analyzing trace with hash -255535228, now seen corresponding path program 60 times [2021-03-10 22:18:12,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:12,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569624102] [2021-03-10 22:18:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:13,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569624102] [2021-03-10 22:18:13,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:13,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:18:13,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299824368] [2021-03-10 22:18:13,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:13,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:13,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:13,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:13,051 INFO L87 Difference]: Start difference. First operand 1328 states and 2966 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:13,187 INFO L93 Difference]: Finished difference Result 1386 states and 3087 transitions. [2021-03-10 22:18:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:18:13,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:13,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:13,189 INFO L225 Difference]: With dead ends: 1386 [2021-03-10 22:18:13,189 INFO L226 Difference]: Without dead ends: 1274 [2021-03-10 22:18:13,189 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:18:13,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-03-10 22:18:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1274. [2021-03-10 22:18:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 2.2505891594658287) internal successors, (2865), 1273 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2865 transitions. [2021-03-10 22:18:13,201 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2865 transitions. Word has length 48 [2021-03-10 22:18:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:13,201 INFO L480 AbstractCegarLoop]: Abstraction has 1274 states and 2865 transitions. [2021-03-10 22:18:13,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2865 transitions. [2021-03-10 22:18:13,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:13,202 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:13,202 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:13,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-10 22:18:13,202 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:13,203 INFO L82 PathProgramCache]: Analyzing trace with hash 750131926, now seen corresponding path program 61 times [2021-03-10 22:18:13,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:13,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050323032] [2021-03-10 22:18:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:13,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050323032] [2021-03-10 22:18:13,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:13,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:18:13,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711338040] [2021-03-10 22:18:13,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 22:18:13,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:13,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 22:18:13,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-10 22:18:13,271 INFO L87 Difference]: Start difference. First operand 1274 states and 2865 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:13,350 INFO L93 Difference]: Finished difference Result 1314 states and 2901 transitions. [2021-03-10 22:18:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:18:13,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:13,351 INFO L225 Difference]: With dead ends: 1314 [2021-03-10 22:18:13,351 INFO L226 Difference]: Without dead ends: 1274 [2021-03-10 22:18:13,351 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:18:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-03-10 22:18:13,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1274. [2021-03-10 22:18:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 2.2097407698350353) internal successors, (2813), 1273 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2813 transitions. [2021-03-10 22:18:13,363 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2813 transitions. Word has length 48 [2021-03-10 22:18:13,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:13,363 INFO L480 AbstractCegarLoop]: Abstraction has 1274 states and 2813 transitions. [2021-03-10 22:18:13,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2813 transitions. [2021-03-10 22:18:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:13,365 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:13,365 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:13,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-10 22:18:13,365 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:13,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:13,365 INFO L82 PathProgramCache]: Analyzing trace with hash -2110250026, now seen corresponding path program 62 times [2021-03-10 22:18:13,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:13,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370518252] [2021-03-10 22:18:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:13,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370518252] [2021-03-10 22:18:13,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:13,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:18:13,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498496911] [2021-03-10 22:18:13,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:18:13,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:13,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:18:13,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:18:13,462 INFO L87 Difference]: Start difference. First operand 1274 states and 2813 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:13,638 INFO L93 Difference]: Finished difference Result 1145 states and 2492 transitions. [2021-03-10 22:18:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:18:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:13,639 INFO L225 Difference]: With dead ends: 1145 [2021-03-10 22:18:13,639 INFO L226 Difference]: Without dead ends: 787 [2021-03-10 22:18:13,639 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:18:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-03-10 22:18:13,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2021-03-10 22:18:13,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 2.199745547073791) internal successors, (1729), 786 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1729 transitions. [2021-03-10 22:18:13,650 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1729 transitions. Word has length 48 [2021-03-10 22:18:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:13,650 INFO L480 AbstractCegarLoop]: Abstraction has 787 states and 1729 transitions. [2021-03-10 22:18:13,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,650 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1729 transitions. [2021-03-10 22:18:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:13,651 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:13,651 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:13,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-10 22:18:13,651 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:13,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1774902848, now seen corresponding path program 63 times [2021-03-10 22:18:13,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:13,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721833634] [2021-03-10 22:18:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:13,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721833634] [2021-03-10 22:18:13,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:13,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:13,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558531092] [2021-03-10 22:18:13,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:13,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:13,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:13,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:13,766 INFO L87 Difference]: Start difference. First operand 787 states and 1729 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:13,884 INFO L93 Difference]: Finished difference Result 846 states and 1811 transitions. [2021-03-10 22:18:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:18:13,884 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:13,885 INFO L225 Difference]: With dead ends: 846 [2021-03-10 22:18:13,885 INFO L226 Difference]: Without dead ends: 517 [2021-03-10 22:18:13,885 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-03-10 22:18:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 377. [2021-03-10 22:18:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.0611702127659575) internal successors, (775), 376 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 775 transitions. [2021-03-10 22:18:13,889 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 775 transitions. Word has length 48 [2021-03-10 22:18:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:13,889 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 775 transitions. [2021-03-10 22:18:13,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 775 transitions. [2021-03-10 22:18:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:13,889 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:13,889 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:13,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-10 22:18:13,889 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:13,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1417611330, now seen corresponding path program 64 times [2021-03-10 22:18:13,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:13,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811129129] [2021-03-10 22:18:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:13,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811129129] [2021-03-10 22:18:13,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:13,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:18:13,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652081414] [2021-03-10 22:18:13,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:18:13,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:13,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:18:13,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:18:13,950 INFO L87 Difference]: Start difference. First operand 377 states and 775 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:14,067 INFO L93 Difference]: Finished difference Result 281 states and 555 transitions. [2021-03-10 22:18:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:18:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:14,067 INFO L225 Difference]: With dead ends: 281 [2021-03-10 22:18:14,067 INFO L226 Difference]: Without dead ends: 165 [2021-03-10 22:18:14,068 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 88.8ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:18:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-03-10 22:18:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-03-10 22:18:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.9390243902439024) internal successors, (318), 164 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 318 transitions. [2021-03-10 22:18:14,070 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 318 transitions. Word has length 48 [2021-03-10 22:18:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:14,070 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 318 transitions. [2021-03-10 22:18:14,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 318 transitions. [2021-03-10 22:18:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:14,070 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:14,070 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:14,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-10 22:18:14,070 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:14,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:14,071 INFO L82 PathProgramCache]: Analyzing trace with hash -231738246, now seen corresponding path program 65 times [2021-03-10 22:18:14,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:14,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34680298] [2021-03-10 22:18:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:14,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34680298] [2021-03-10 22:18:14,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:14,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:18:14,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736789468] [2021-03-10 22:18:14,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:18:14,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:14,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:18:14,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:14,257 INFO L87 Difference]: Start difference. First operand 165 states and 318 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:14,425 INFO L93 Difference]: Finished difference Result 195 states and 375 transitions. [2021-03-10 22:18:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:18:14,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:14,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:14,426 INFO L225 Difference]: With dead ends: 195 [2021-03-10 22:18:14,426 INFO L226 Difference]: Without dead ends: 165 [2021-03-10 22:18:14,426 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 235.3ms TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:18:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-03-10 22:18:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2021-03-10 22:18:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.925) internal successors, (308), 160 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 308 transitions. [2021-03-10 22:18:14,427 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 308 transitions. Word has length 48 [2021-03-10 22:18:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:14,427 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 308 transitions. [2021-03-10 22:18:14,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 308 transitions. [2021-03-10 22:18:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 22:18:14,428 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:14,428 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:14,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-10 22:18:14,428 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:14,428 INFO L82 PathProgramCache]: Analyzing trace with hash 180305180, now seen corresponding path program 66 times [2021-03-10 22:18:14,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:14,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263252871] [2021-03-10 22:18:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:14,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263252871] [2021-03-10 22:18:14,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:14,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:18:14,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112092157] [2021-03-10 22:18:14,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:18:14,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:14,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:18:14,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:18:14,597 INFO L87 Difference]: Start difference. First operand 161 states and 308 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:14,703 INFO L93 Difference]: Finished difference Result 82 states and 147 transitions. [2021-03-10 22:18:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:18:14,704 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 22:18:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:14,704 INFO L225 Difference]: With dead ends: 82 [2021-03-10 22:18:14,704 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 22:18:14,704 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 182.9ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:18:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 22:18:14,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 22:18:14,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 22:18:14,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-03-10 22:18:14,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:14,705 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 22:18:14,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 22:18:14,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 22:18:14,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-10 22:18:14,709 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 10:18:14 BasicIcfg [2021-03-10 22:18:14,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 22:18:14,710 INFO L168 Benchmark]: Toolchain (without parser) took 28424.13 ms. Allocated memory was 255.9 MB in the beginning and 864.0 MB in the end (delta: 608.2 MB). Free memory was 236.2 MB in the beginning and 578.3 MB in the end (delta: -342.1 MB). Peak memory consumption was 266.8 MB. Max. memory is 16.0 GB. [2021-03-10 22:18:14,710 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.3 MB in the end (delta: 92.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 22:18:14,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.43 ms. Allocated memory is still 255.9 MB. Free memory was 235.7 MB in the beginning and 234.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 22:18:14,710 INFO L168 Benchmark]: Boogie Preprocessor took 19.01 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 233.1 MB in the end (delta: 998.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:18:14,710 INFO L168 Benchmark]: RCFGBuilder took 357.28 ms. Allocated memory is still 255.9 MB. Free memory was 233.1 MB in the beginning and 234.0 MB in the end (delta: -889.3 kB). Peak memory consumption was 17.8 MB. Max. memory is 16.0 GB. [2021-03-10 22:18:14,710 INFO L168 Benchmark]: TraceAbstraction took 28012.28 ms. Allocated memory was 255.9 MB in the beginning and 864.0 MB in the end (delta: 608.2 MB). Free memory was 233.4 MB in the beginning and 578.3 MB in the end (delta: -344.9 MB). Peak memory consumption was 261.6 MB. Max. memory is 16.0 GB. [2021-03-10 22:18:14,710 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 255.9 MB. Free memory was 237.4 MB in the beginning and 237.3 MB in the end (delta: 92.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.43 ms. Allocated memory is still 255.9 MB. Free memory was 235.7 MB in the beginning and 234.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.01 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 233.1 MB in the end (delta: 998.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 357.28 ms. Allocated memory is still 255.9 MB. Free memory was 233.1 MB in the beginning and 234.0 MB in the end (delta: -889.3 kB). Peak memory consumption was 17.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 28012.28 ms. Allocated memory was 255.9 MB in the beginning and 864.0 MB in the end (delta: 608.2 MB). Free memory was 233.4 MB in the beginning and 578.3 MB in the end (delta: -344.9 MB). Peak memory consumption was 261.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27929.8ms, OverallIterations: 66, TraceHistogramMax: 1, EmptinessCheckTime: 315.8ms, AutomataDifference: 15126.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 213.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6563 SDtfs, 9778 SDslu, 24852 SDs, 0 SdLazy, 16476 SolverSat, 2155 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7918.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 893 GetRequests, 159 SyntacticMatches, 31 SemanticMatches, 703 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 7658.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5042occurred in iteration=31, InterpolantAutomatonStates: 705, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4842.2ms AutomataMinimizationTime, 66 MinimizatonAttempts, 49388 StatesRemovedByMinimization, 54 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 67.1ms SsaConstructionTime, 415.7ms SatisfiabilityAnalysisTime, 6531.9ms InterpolantComputationTime, 3168 NumberOfCodeBlocks, 3168 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 3102 ConstructedInterpolants, 0 QuantifiedInterpolants, 21293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 66 InterpolantComputations, 66 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...