/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 19:54:19,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 19:54:19,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 19:54:19,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 19:54:19,651 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 [2021-07-13 19:54:19,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 19:54:19,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 19:54:19,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 19:54:19,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 19:54:19,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 19:54:19,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 19:54:19,685 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 19:54:19,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 19:54:19,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 19:54:19,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 19:54:19,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 19:54:19,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 19:54:19,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 19:54:19,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 19:54:19,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 19:54:19,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 19:54:19,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 19:54:19,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 19:54:19,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 19:54:19,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 19:54:19,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 19:54:19,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 19:54:19,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 19:54:19,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:54:19,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 19:54:19,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 19:54:19,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 19:54:19,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 19:54:19,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 19:54:19,688 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 19:54:19,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 19:54:19,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 19:54:19,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 19:54:19,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 19:54:19,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 19:54:19,957 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 19:54:19,958 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 19:54:19,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-07-13 19:54:19,960 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-07-13 19:54:19,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 19:54:19,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 19:54:19,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 19:54:19,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 19:54:19,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 19:54:20,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/1) ... [2021-07-13 19:54:20,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/1) ... [2021-07-13 19:54:20,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 19:54:20,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 19:54:20,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 19:54:20,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 19:54:20,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/1) ... [2021-07-13 19:54:20,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/1) ... [2021-07-13 19:54:20,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/1) ... [2021-07-13 19:54:20,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/1) ... [2021-07-13 19:54:20,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/1) ... [2021-07-13 19:54:20,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/1) ... [2021-07-13 19:54:20,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/1) ... [2021-07-13 19:54:20,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 19:54:20,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 19:54:20,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 19:54:20,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 19:54:20,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:54:20,109 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 19:54:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 19:54:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 19:54:20,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 19:54:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 19:54:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 19:54:20,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 19:54:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 19:54:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 19:54:20,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-13 19:54:20,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-13 19:54:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-13 19:54:20,111 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-13 19:54:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-13 19:54:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-13 19:54:20,111 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-07-13 19:54:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-07-13 19:54:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-07-13 19:54:20,112 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 19:54:20,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 19:54:20,261 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 19:54:20,262 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:54:20 BoogieIcfgContainer [2021-07-13 19:54:20,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 19:54:20,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 19:54:20,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 19:54:20,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 19:54:20,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:54:19" (1/2) ... [2021-07-13 19:54:20,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5e5ea6 and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:54:20, skipping insertion in model container [2021-07-13 19:54:20,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:54:20" (2/2) ... [2021-07-13 19:54:20,267 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-07-13 19:54:20,271 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 19:54:20,271 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 19:54:20,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 19:54:20,272 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 19:54:20,310 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-07-13 19:54:20,325 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-07-13 19:54:20,336 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:54:20,336 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:54:20,336 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:54:20,337 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:54:20,337 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:54:20,337 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:54:20,337 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:54:20,337 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 19:54:20,344 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 46 transitions, 132 flow [2021-07-13 19:54:20,787 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12444 states, 12443 states have (on average 4.187253877682231) internal successors, (52102), 12443 states have internal predecessors, (52102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 12444 states, 12443 states have (on average 4.187253877682231) internal successors, (52102), 12443 states have internal predecessors, (52102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:20,942 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:20,942 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:20,943 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:20,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:20,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1715689316, now seen corresponding path program 1 times [2021-07-13 19:54:20,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:20,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886842801] [2021-07-13 19:54:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:21,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:21,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886842801] [2021-07-13 19:54:21,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886842801] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:21,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:21,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:54:21,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626543550] [2021-07-13 19:54:21,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:54:21,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:21,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:54:21,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:54:21,218 INFO L87 Difference]: Start difference. First operand has 12444 states, 12443 states have (on average 4.187253877682231) internal successors, (52102), 12443 states have internal predecessors, (52102), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:21,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:21,502 INFO L93 Difference]: Finished difference Result 19654 states and 81351 transitions. [2021-07-13 19:54:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:54:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:21,623 INFO L225 Difference]: With dead ends: 19654 [2021-07-13 19:54:21,623 INFO L226 Difference]: Without dead ends: 13110 [2021-07-13 19:54:21,624 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.3ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13110 states. [2021-07-13 19:54:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 13110. [2021-07-13 19:54:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13110 states, 13109 states have (on average 4.060035090395911) internal successors, (53223), 13109 states have internal predecessors, (53223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13110 states to 13110 states and 53223 transitions. [2021-07-13 19:54:22,254 INFO L78 Accepts]: Start accepts. Automaton has 13110 states and 53223 transitions. Word has length 39 [2021-07-13 19:54:22,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:22,255 INFO L482 AbstractCegarLoop]: Abstraction has 13110 states and 53223 transitions. [2021-07-13 19:54:22,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 13110 states and 53223 transitions. [2021-07-13 19:54:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:22,385 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:22,385 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:22,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 19:54:22,386 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:22,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1375327154, now seen corresponding path program 2 times [2021-07-13 19:54:22,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:22,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438195527] [2021-07-13 19:54:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:22,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:22,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438195527] [2021-07-13 19:54:22,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438195527] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:22,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:22,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:54:22,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967561967] [2021-07-13 19:54:22,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:54:22,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:22,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:54:22,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:54:22,466 INFO L87 Difference]: Start difference. First operand 13110 states and 53223 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:22,905 INFO L93 Difference]: Finished difference Result 13536 states and 54819 transitions. [2021-07-13 19:54:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:54:22,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:23,011 INFO L225 Difference]: With dead ends: 13536 [2021-07-13 19:54:23,012 INFO L226 Difference]: Without dead ends: 13536 [2021-07-13 19:54:23,012 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:23,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13536 states. [2021-07-13 19:54:23,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13536 to 13536. [2021-07-13 19:54:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 4.050166235685261) internal successors, (54819), 13535 states have internal predecessors, (54819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 54819 transitions. [2021-07-13 19:54:23,483 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 54819 transitions. Word has length 39 [2021-07-13 19:54:23,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:23,484 INFO L482 AbstractCegarLoop]: Abstraction has 13536 states and 54819 transitions. [2021-07-13 19:54:23,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:23,485 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 54819 transitions. [2021-07-13 19:54:23,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:23,524 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:23,524 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:23,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 19:54:23,525 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:23,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:23,525 INFO L82 PathProgramCache]: Analyzing trace with hash 620414158, now seen corresponding path program 3 times [2021-07-13 19:54:23,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:23,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711112095] [2021-07-13 19:54:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:23,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:23,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711112095] [2021-07-13 19:54:23,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711112095] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:23,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:23,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:54:23,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512948839] [2021-07-13 19:54:23,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:54:23,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:23,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:54:23,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:23,598 INFO L87 Difference]: Start difference. First operand 13536 states and 54819 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:24,136 INFO L93 Difference]: Finished difference Result 33455 states and 133148 transitions. [2021-07-13 19:54:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:54:24,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:24,310 INFO L225 Difference]: With dead ends: 33455 [2021-07-13 19:54:24,310 INFO L226 Difference]: Without dead ends: 33455 [2021-07-13 19:54:24,311 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33455 states. [2021-07-13 19:54:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33455 to 16657. [2021-07-13 19:54:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16657 states, 16656 states have (on average 4.000540345821325) internal successors, (66633), 16656 states have internal predecessors, (66633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:25,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16657 states to 16657 states and 66633 transitions. [2021-07-13 19:54:25,127 INFO L78 Accepts]: Start accepts. Automaton has 16657 states and 66633 transitions. Word has length 39 [2021-07-13 19:54:25,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:25,127 INFO L482 AbstractCegarLoop]: Abstraction has 16657 states and 66633 transitions. [2021-07-13 19:54:25,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:25,127 INFO L276 IsEmpty]: Start isEmpty. Operand 16657 states and 66633 transitions. [2021-07-13 19:54:25,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:25,174 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:25,174 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:25,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 19:54:25,175 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:25,176 INFO L82 PathProgramCache]: Analyzing trace with hash 934314874, now seen corresponding path program 4 times [2021-07-13 19:54:25,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:25,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963267799] [2021-07-13 19:54:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:25,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:25,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963267799] [2021-07-13 19:54:25,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963267799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:25,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:25,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:54:25,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892550862] [2021-07-13 19:54:25,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 19:54:25,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:25,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 19:54:25,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:25,253 INFO L87 Difference]: Start difference. First operand 16657 states and 66633 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:25,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:25,783 INFO L93 Difference]: Finished difference Result 35904 states and 141978 transitions. [2021-07-13 19:54:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:54:25,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:25,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:25,981 INFO L225 Difference]: With dead ends: 35904 [2021-07-13 19:54:25,981 INFO L226 Difference]: Without dead ends: 35904 [2021-07-13 19:54:25,981 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35904 states. [2021-07-13 19:54:26,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35904 to 18510. [2021-07-13 19:54:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18510 states, 18509 states have (on average 3.9846020854719324) internal successors, (73751), 18509 states have internal predecessors, (73751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18510 states to 18510 states and 73751 transitions. [2021-07-13 19:54:26,723 INFO L78 Accepts]: Start accepts. Automaton has 18510 states and 73751 transitions. Word has length 39 [2021-07-13 19:54:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:26,723 INFO L482 AbstractCegarLoop]: Abstraction has 18510 states and 73751 transitions. [2021-07-13 19:54:26,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 18510 states and 73751 transitions. [2021-07-13 19:54:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:26,935 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:26,935 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:26,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 19:54:26,936 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:26,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1185778148, now seen corresponding path program 5 times [2021-07-13 19:54:26,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:26,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141316923] [2021-07-13 19:54:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:26,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:26,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141316923] [2021-07-13 19:54:26,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141316923] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:26,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:26,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:54:26,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771216876] [2021-07-13 19:54:26,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:54:26,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:26,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:54:26,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:26,979 INFO L87 Difference]: Start difference. First operand 18510 states and 73751 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:27,305 INFO L93 Difference]: Finished difference Result 31750 states and 125094 transitions. [2021-07-13 19:54:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 19:54:27,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:27,576 INFO L225 Difference]: With dead ends: 31750 [2021-07-13 19:54:27,577 INFO L226 Difference]: Without dead ends: 31744 [2021-07-13 19:54:27,578 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 26.6ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:54:27,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31744 states. [2021-07-13 19:54:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31744 to 18770. [2021-07-13 19:54:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18770 states, 18769 states have (on average 3.9722414619851882) internal successors, (74555), 18769 states have internal predecessors, (74555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18770 states to 18770 states and 74555 transitions. [2021-07-13 19:54:28,255 INFO L78 Accepts]: Start accepts. Automaton has 18770 states and 74555 transitions. Word has length 39 [2021-07-13 19:54:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:28,255 INFO L482 AbstractCegarLoop]: Abstraction has 18770 states and 74555 transitions. [2021-07-13 19:54:28,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:28,256 INFO L276 IsEmpty]: Start isEmpty. Operand 18770 states and 74555 transitions. [2021-07-13 19:54:28,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:28,290 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:28,290 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:28,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 19:54:28,290 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:28,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1322403634, now seen corresponding path program 6 times [2021-07-13 19:54:28,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:28,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685561051] [2021-07-13 19:54:28,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:28,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:28,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685561051] [2021-07-13 19:54:28,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685561051] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:28,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:28,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:54:28,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657913427] [2021-07-13 19:54:28,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 19:54:28,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:28,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 19:54:28,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:28,322 INFO L87 Difference]: Start difference. First operand 18770 states and 74555 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:28,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:28,776 INFO L93 Difference]: Finished difference Result 36650 states and 143630 transitions. [2021-07-13 19:54:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:54:28,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:28,896 INFO L225 Difference]: With dead ends: 36650 [2021-07-13 19:54:28,896 INFO L226 Difference]: Without dead ends: 36632 [2021-07-13 19:54:28,897 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:28,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36632 states. [2021-07-13 19:54:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36632 to 19412. [2021-07-13 19:54:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19412 states, 19411 states have (on average 3.9391066920818094) internal successors, (76462), 19411 states have internal predecessors, (76462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 76462 transitions. [2021-07-13 19:54:29,581 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 76462 transitions. Word has length 39 [2021-07-13 19:54:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:29,581 INFO L482 AbstractCegarLoop]: Abstraction has 19412 states and 76462 transitions. [2021-07-13 19:54:29,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 76462 transitions. [2021-07-13 19:54:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:29,620 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:29,620 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:29,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 19:54:29,621 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:29,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:29,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1380554318, now seen corresponding path program 7 times [2021-07-13 19:54:29,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:29,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736882112] [2021-07-13 19:54:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:29,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:29,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736882112] [2021-07-13 19:54:29,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736882112] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:29,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:29,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:54:29,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409108378] [2021-07-13 19:54:29,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:54:29,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:29,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:54:29,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:29,648 INFO L87 Difference]: Start difference. First operand 19412 states and 76462 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:30,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:30,111 INFO L93 Difference]: Finished difference Result 35951 states and 140019 transitions. [2021-07-13 19:54:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:54:30,112 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:30,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:30,234 INFO L225 Difference]: With dead ends: 35951 [2021-07-13 19:54:30,235 INFO L226 Difference]: Without dead ends: 35939 [2021-07-13 19:54:30,235 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:30,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35939 states. [2021-07-13 19:54:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35939 to 21351. [2021-07-13 19:54:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21351 states, 21350 states have (on average 3.9075878220140514) internal successors, (83427), 21350 states have internal predecessors, (83427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21351 states to 21351 states and 83427 transitions. [2021-07-13 19:54:31,132 INFO L78 Accepts]: Start accepts. Automaton has 21351 states and 83427 transitions. Word has length 39 [2021-07-13 19:54:31,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:31,132 INFO L482 AbstractCegarLoop]: Abstraction has 21351 states and 83427 transitions. [2021-07-13 19:54:31,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 21351 states and 83427 transitions. [2021-07-13 19:54:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:31,173 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:31,173 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:31,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 19:54:31,174 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:31,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:31,174 INFO L82 PathProgramCache]: Analyzing trace with hash 908148320, now seen corresponding path program 8 times [2021-07-13 19:54:31,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:31,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485855198] [2021-07-13 19:54:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:31,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:31,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485855198] [2021-07-13 19:54:31,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485855198] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:31,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:31,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:54:31,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42975540] [2021-07-13 19:54:31,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:54:31,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:31,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:54:31,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:31,206 INFO L87 Difference]: Start difference. First operand 21351 states and 83427 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:31,476 INFO L93 Difference]: Finished difference Result 35903 states and 138617 transitions. [2021-07-13 19:54:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:54:31,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:31,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:31,586 INFO L225 Difference]: With dead ends: 35903 [2021-07-13 19:54:31,587 INFO L226 Difference]: Without dead ends: 35873 [2021-07-13 19:54:31,587 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35873 states. [2021-07-13 19:54:32,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35873 to 21689. [2021-07-13 19:54:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21689 states, 21688 states have (on average 3.866008852821837) internal successors, (83846), 21688 states have internal predecessors, (83846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21689 states to 21689 states and 83846 transitions. [2021-07-13 19:54:32,394 INFO L78 Accepts]: Start accepts. Automaton has 21689 states and 83846 transitions. Word has length 39 [2021-07-13 19:54:32,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:32,394 INFO L482 AbstractCegarLoop]: Abstraction has 21689 states and 83846 transitions. [2021-07-13 19:54:32,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 21689 states and 83846 transitions. [2021-07-13 19:54:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:32,436 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:32,436 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:32,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 19:54:32,437 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:32,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:32,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1944237650, now seen corresponding path program 9 times [2021-07-13 19:54:32,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:32,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448622859] [2021-07-13 19:54:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:32,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:32,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448622859] [2021-07-13 19:54:32,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448622859] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:32,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:32,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:54:32,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626415886] [2021-07-13 19:54:32,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:54:32,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:32,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:54:32,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:54:32,464 INFO L87 Difference]: Start difference. First operand 21689 states and 83846 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:32,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:32,651 INFO L93 Difference]: Finished difference Result 21647 states and 83363 transitions. [2021-07-13 19:54:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:54:32,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:32,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:32,713 INFO L225 Difference]: With dead ends: 21647 [2021-07-13 19:54:32,713 INFO L226 Difference]: Without dead ends: 21605 [2021-07-13 19:54:32,713 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21605 states. [2021-07-13 19:54:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21605 to 21403. [2021-07-13 19:54:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21403 states, 21402 states have (on average 3.863470703672554) internal successors, (82686), 21402 states have internal predecessors, (82686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21403 states to 21403 states and 82686 transitions. [2021-07-13 19:54:33,267 INFO L78 Accepts]: Start accepts. Automaton has 21403 states and 82686 transitions. Word has length 39 [2021-07-13 19:54:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:33,268 INFO L482 AbstractCegarLoop]: Abstraction has 21403 states and 82686 transitions. [2021-07-13 19:54:33,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 21403 states and 82686 transitions. [2021-07-13 19:54:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:33,306 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:33,307 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:33,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 19:54:33,307 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:33,307 INFO L82 PathProgramCache]: Analyzing trace with hash -189870850, now seen corresponding path program 10 times [2021-07-13 19:54:33,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:33,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541173525] [2021-07-13 19:54:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:33,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:33,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541173525] [2021-07-13 19:54:33,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541173525] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:33,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:33,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:54:33,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847172164] [2021-07-13 19:54:33,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:54:33,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:33,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:54:33,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:54:33,337 INFO L87 Difference]: Start difference. First operand 21403 states and 82686 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:33,680 INFO L93 Difference]: Finished difference Result 21227 states and 81806 transitions. [2021-07-13 19:54:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:54:33,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:33,738 INFO L225 Difference]: With dead ends: 21227 [2021-07-13 19:54:33,738 INFO L226 Difference]: Without dead ends: 21203 [2021-07-13 19:54:33,738 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:33,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21203 states. [2021-07-13 19:54:34,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21203 to 21050. [2021-07-13 19:54:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21050 states, 21049 states have (on average 3.8641740700270795) internal successors, (81337), 21049 states have internal predecessors, (81337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21050 states to 21050 states and 81337 transitions. [2021-07-13 19:54:34,251 INFO L78 Accepts]: Start accepts. Automaton has 21050 states and 81337 transitions. Word has length 39 [2021-07-13 19:54:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:34,251 INFO L482 AbstractCegarLoop]: Abstraction has 21050 states and 81337 transitions. [2021-07-13 19:54:34,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 21050 states and 81337 transitions. [2021-07-13 19:54:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:34,289 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:34,289 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:34,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 19:54:34,290 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:34,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:34,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1798812760, now seen corresponding path program 11 times [2021-07-13 19:54:34,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:34,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431002574] [2021-07-13 19:54:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:34,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:34,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431002574] [2021-07-13 19:54:34,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431002574] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:34,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:34,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:54:34,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158543012] [2021-07-13 19:54:34,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:54:34,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:34,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:54:34,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:34,331 INFO L87 Difference]: Start difference. First operand 21050 states and 81337 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:34,854 INFO L93 Difference]: Finished difference Result 41364 states and 158003 transitions. [2021-07-13 19:54:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:54:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:34,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:34,993 INFO L225 Difference]: With dead ends: 41364 [2021-07-13 19:54:34,993 INFO L226 Difference]: Without dead ends: 41364 [2021-07-13 19:54:34,994 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:54:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41364 states. [2021-07-13 19:54:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41364 to 24666. [2021-07-13 19:54:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24666 states, 24665 states have (on average 3.801054125278735) internal successors, (93753), 24665 states have internal predecessors, (93753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24666 states to 24666 states and 93753 transitions. [2021-07-13 19:54:35,850 INFO L78 Accepts]: Start accepts. Automaton has 24666 states and 93753 transitions. Word has length 39 [2021-07-13 19:54:35,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:35,851 INFO L482 AbstractCegarLoop]: Abstraction has 24666 states and 93753 transitions. [2021-07-13 19:54:35,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:35,851 INFO L276 IsEmpty]: Start isEmpty. Operand 24666 states and 93753 transitions. [2021-07-13 19:54:35,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:35,903 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:35,903 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:35,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-13 19:54:35,903 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:35,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1238471434, now seen corresponding path program 12 times [2021-07-13 19:54:35,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:35,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879966209] [2021-07-13 19:54:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:35,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:35,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879966209] [2021-07-13 19:54:35,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879966209] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:35,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:35,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:54:35,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204046892] [2021-07-13 19:54:35,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 19:54:35,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:35,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 19:54:35,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:54:35,937 INFO L87 Difference]: Start difference. First operand 24666 states and 93753 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:36,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:36,269 INFO L93 Difference]: Finished difference Result 24060 states and 91079 transitions. [2021-07-13 19:54:36,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:54:36,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:36,333 INFO L225 Difference]: With dead ends: 24060 [2021-07-13 19:54:36,333 INFO L226 Difference]: Without dead ends: 23997 [2021-07-13 19:54:36,333 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23997 states. [2021-07-13 19:54:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23997 to 23727. [2021-07-13 19:54:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23727 states, 23726 states have (on average 3.8022844137233416) internal successors, (90213), 23726 states have internal predecessors, (90213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23727 states to 23727 states and 90213 transitions. [2021-07-13 19:54:36,897 INFO L78 Accepts]: Start accepts. Automaton has 23727 states and 90213 transitions. Word has length 39 [2021-07-13 19:54:36,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:36,897 INFO L482 AbstractCegarLoop]: Abstraction has 23727 states and 90213 transitions. [2021-07-13 19:54:36,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:36,897 INFO L276 IsEmpty]: Start isEmpty. Operand 23727 states and 90213 transitions. [2021-07-13 19:54:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:36,939 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:36,939 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:36,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-13 19:54:36,940 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:36,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:36,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2101915092, now seen corresponding path program 13 times [2021-07-13 19:54:36,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:36,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647711083] [2021-07-13 19:54:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:36,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:36,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647711083] [2021-07-13 19:54:36,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647711083] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:36,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:36,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:54:36,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221184119] [2021-07-13 19:54:36,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:54:36,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:36,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:54:36,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:36,988 INFO L87 Difference]: Start difference. First operand 23727 states and 90213 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:37,440 INFO L93 Difference]: Finished difference Result 39912 states and 151078 transitions. [2021-07-13 19:54:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:54:37,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:37,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:37,568 INFO L225 Difference]: With dead ends: 39912 [2021-07-13 19:54:37,568 INFO L226 Difference]: Without dead ends: 39864 [2021-07-13 19:54:37,568 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:37,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39864 states. [2021-07-13 19:54:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39864 to 24281. [2021-07-13 19:54:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24281 states, 24280 states have (on average 3.7902388797364086) internal successors, (92027), 24280 states have internal predecessors, (92027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24281 states to 24281 states and 92027 transitions. [2021-07-13 19:54:38,339 INFO L78 Accepts]: Start accepts. Automaton has 24281 states and 92027 transitions. Word has length 39 [2021-07-13 19:54:38,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:38,339 INFO L482 AbstractCegarLoop]: Abstraction has 24281 states and 92027 transitions. [2021-07-13 19:54:38,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand 24281 states and 92027 transitions. [2021-07-13 19:54:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:38,382 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:38,382 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:38,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-13 19:54:38,383 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:38,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:38,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1053322228, now seen corresponding path program 14 times [2021-07-13 19:54:38,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:38,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088637746] [2021-07-13 19:54:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:38,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:38,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088637746] [2021-07-13 19:54:38,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088637746] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:38,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:38,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:54:38,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760426381] [2021-07-13 19:54:38,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:54:38,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:38,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:54:38,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:38,410 INFO L87 Difference]: Start difference. First operand 24281 states and 92027 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:38,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:38,786 INFO L93 Difference]: Finished difference Result 32456 states and 120014 transitions. [2021-07-13 19:54:38,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:54:38,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:38,872 INFO L225 Difference]: With dead ends: 32456 [2021-07-13 19:54:38,872 INFO L226 Difference]: Without dead ends: 32320 [2021-07-13 19:54:38,872 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32320 states. [2021-07-13 19:54:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32320 to 20818. [2021-07-13 19:54:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20818 states, 20817 states have (on average 3.6923668155834175) internal successors, (76864), 20817 states have internal predecessors, (76864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20818 states to 20818 states and 76864 transitions. [2021-07-13 19:54:39,471 INFO L78 Accepts]: Start accepts. Automaton has 20818 states and 76864 transitions. Word has length 39 [2021-07-13 19:54:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:39,472 INFO L482 AbstractCegarLoop]: Abstraction has 20818 states and 76864 transitions. [2021-07-13 19:54:39,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 20818 states and 76864 transitions. [2021-07-13 19:54:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:39,507 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:39,507 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:39,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-13 19:54:39,508 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:39,508 INFO L82 PathProgramCache]: Analyzing trace with hash -540719572, now seen corresponding path program 15 times [2021-07-13 19:54:39,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:39,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697141170] [2021-07-13 19:54:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:39,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:39,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697141170] [2021-07-13 19:54:39,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697141170] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:39,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:39,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:54:39,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434746816] [2021-07-13 19:54:39,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 19:54:39,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:39,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 19:54:39,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:39,542 INFO L87 Difference]: Start difference. First operand 20818 states and 76864 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:40,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:40,002 INFO L93 Difference]: Finished difference Result 36117 states and 131263 transitions. [2021-07-13 19:54:40,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:54:40,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:40,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:40,117 INFO L225 Difference]: With dead ends: 36117 [2021-07-13 19:54:40,117 INFO L226 Difference]: Without dead ends: 35877 [2021-07-13 19:54:40,118 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35877 states. [2021-07-13 19:54:40,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35877 to 21634. [2021-07-13 19:54:40,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21634 states, 21633 states have (on average 3.6624139046826607) internal successors, (79229), 21633 states have internal predecessors, (79229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21634 states to 21634 states and 79229 transitions. [2021-07-13 19:54:40,809 INFO L78 Accepts]: Start accepts. Automaton has 21634 states and 79229 transitions. Word has length 39 [2021-07-13 19:54:40,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:40,810 INFO L482 AbstractCegarLoop]: Abstraction has 21634 states and 79229 transitions. [2021-07-13 19:54:40,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:40,810 INFO L276 IsEmpty]: Start isEmpty. Operand 21634 states and 79229 transitions. [2021-07-13 19:54:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:40,846 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:40,846 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:40,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-13 19:54:40,846 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2082921458, now seen corresponding path program 16 times [2021-07-13 19:54:40,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:40,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613971862] [2021-07-13 19:54:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:40,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:40,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613971862] [2021-07-13 19:54:40,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613971862] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:40,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:40,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:54:40,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375617573] [2021-07-13 19:54:40,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:54:40,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:40,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:54:40,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:40,890 INFO L87 Difference]: Start difference. First operand 21634 states and 79229 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:41,189 INFO L93 Difference]: Finished difference Result 38178 states and 137087 transitions. [2021-07-13 19:54:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:54:41,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:41,486 INFO L225 Difference]: With dead ends: 38178 [2021-07-13 19:54:41,486 INFO L226 Difference]: Without dead ends: 37920 [2021-07-13 19:54:41,487 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:54:41,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37920 states. [2021-07-13 19:54:42,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37920 to 22991. [2021-07-13 19:54:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 3.6151805132666377) internal successors, (83113), 22990 states have internal predecessors, (83113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:42,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 83113 transitions. [2021-07-13 19:54:42,141 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 83113 transitions. Word has length 39 [2021-07-13 19:54:42,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:42,141 INFO L482 AbstractCegarLoop]: Abstraction has 22991 states and 83113 transitions. [2021-07-13 19:54:42,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:42,142 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 83113 transitions. [2021-07-13 19:54:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:42,179 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:42,180 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:42,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-13 19:54:42,180 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:42,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1329908748, now seen corresponding path program 17 times [2021-07-13 19:54:42,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:42,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259701508] [2021-07-13 19:54:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:42,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:42,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259701508] [2021-07-13 19:54:42,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259701508] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:42,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:42,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:54:42,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763063115] [2021-07-13 19:54:42,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 19:54:42,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:42,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 19:54:42,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:42,217 INFO L87 Difference]: Start difference. First operand 22991 states and 83113 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:42,461 INFO L93 Difference]: Finished difference Result 37550 states and 133913 transitions. [2021-07-13 19:54:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:54:42,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:42,557 INFO L225 Difference]: With dead ends: 37550 [2021-07-13 19:54:42,557 INFO L226 Difference]: Without dead ends: 37350 [2021-07-13 19:54:42,557 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37350 states. [2021-07-13 19:54:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37350 to 22436. [2021-07-13 19:54:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22436 states, 22435 states have (on average 3.5778916870960553) internal successors, (80270), 22435 states have internal predecessors, (80270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22436 states to 22436 states and 80270 transitions. [2021-07-13 19:54:43,396 INFO L78 Accepts]: Start accepts. Automaton has 22436 states and 80270 transitions. Word has length 39 [2021-07-13 19:54:43,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:43,396 INFO L482 AbstractCegarLoop]: Abstraction has 22436 states and 80270 transitions. [2021-07-13 19:54:43,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 22436 states and 80270 transitions. [2021-07-13 19:54:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:43,433 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:43,433 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:43,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-13 19:54:43,434 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:43,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:43,434 INFO L82 PathProgramCache]: Analyzing trace with hash 592473582, now seen corresponding path program 18 times [2021-07-13 19:54:43,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:43,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020959850] [2021-07-13 19:54:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:43,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:43,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020959850] [2021-07-13 19:54:43,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020959850] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:43,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:43,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:54:43,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858750144] [2021-07-13 19:54:43,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:54:43,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:43,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:54:43,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:43,478 INFO L87 Difference]: Start difference. First operand 22436 states and 80270 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:43,777 INFO L93 Difference]: Finished difference Result 35683 states and 123807 transitions. [2021-07-13 19:54:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:54:43,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:43,872 INFO L225 Difference]: With dead ends: 35683 [2021-07-13 19:54:43,872 INFO L226 Difference]: Without dead ends: 35127 [2021-07-13 19:54:43,873 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:54:43,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35127 states. [2021-07-13 19:54:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35127 to 21141. [2021-07-13 19:54:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21141 states, 21140 states have (on average 3.479091769157994) internal successors, (73548), 21140 states have internal predecessors, (73548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21141 states to 21141 states and 73548 transitions. [2021-07-13 19:54:44,485 INFO L78 Accepts]: Start accepts. Automaton has 21141 states and 73548 transitions. Word has length 39 [2021-07-13 19:54:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:44,485 INFO L482 AbstractCegarLoop]: Abstraction has 21141 states and 73548 transitions. [2021-07-13 19:54:44,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 21141 states and 73548 transitions. [2021-07-13 19:54:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:44,520 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:44,520 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:44,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-13 19:54:44,521 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1672676318, now seen corresponding path program 19 times [2021-07-13 19:54:44,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:44,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193727373] [2021-07-13 19:54:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:44,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:44,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193727373] [2021-07-13 19:54:44,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193727373] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:44,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:44,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:54:44,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606774648] [2021-07-13 19:54:44,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:54:44,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:44,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:54:44,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:44,686 INFO L87 Difference]: Start difference. First operand 21141 states and 73548 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:44,888 INFO L93 Difference]: Finished difference Result 34526 states and 119373 transitions. [2021-07-13 19:54:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:54:44,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:44,971 INFO L225 Difference]: With dead ends: 34526 [2021-07-13 19:54:44,971 INFO L226 Difference]: Without dead ends: 34342 [2021-07-13 19:54:44,971 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 151.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34342 states. [2021-07-13 19:54:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34342 to 20667. [2021-07-13 19:54:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20667 states, 20666 states have (on average 3.459498693506242) internal successors, (71494), 20666 states have internal predecessors, (71494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20667 states to 20667 states and 71494 transitions. [2021-07-13 19:54:45,580 INFO L78 Accepts]: Start accepts. Automaton has 20667 states and 71494 transitions. Word has length 39 [2021-07-13 19:54:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:45,580 INFO L482 AbstractCegarLoop]: Abstraction has 20667 states and 71494 transitions. [2021-07-13 19:54:45,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 20667 states and 71494 transitions. [2021-07-13 19:54:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:45,613 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:45,613 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:45,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-13 19:54:45,613 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:45,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1105254300, now seen corresponding path program 20 times [2021-07-13 19:54:45,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:45,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895377642] [2021-07-13 19:54:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:45,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:45,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895377642] [2021-07-13 19:54:45,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895377642] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:45,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:45,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:54:45,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292295575] [2021-07-13 19:54:45,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:54:45,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:45,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:54:45,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:45,656 INFO L87 Difference]: Start difference. First operand 20667 states and 71494 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:45,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:45,932 INFO L93 Difference]: Finished difference Result 30341 states and 101554 transitions. [2021-07-13 19:54:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:54:45,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:46,129 INFO L225 Difference]: With dead ends: 30341 [2021-07-13 19:54:46,129 INFO L226 Difference]: Without dead ends: 28975 [2021-07-13 19:54:46,129 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:54:46,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28975 states. [2021-07-13 19:54:46,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28975 to 18475. [2021-07-13 19:54:46,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18475 states, 18474 states have (on average 3.362725993287864) internal successors, (62123), 18474 states have internal predecessors, (62123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18475 states to 18475 states and 62123 transitions. [2021-07-13 19:54:46,508 INFO L78 Accepts]: Start accepts. Automaton has 18475 states and 62123 transitions. Word has length 39 [2021-07-13 19:54:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:46,509 INFO L482 AbstractCegarLoop]: Abstraction has 18475 states and 62123 transitions. [2021-07-13 19:54:46,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 18475 states and 62123 transitions. [2021-07-13 19:54:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:46,661 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:46,661 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:46,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-13 19:54:46,661 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:46,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1928798790, now seen corresponding path program 21 times [2021-07-13 19:54:46,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:46,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40541877] [2021-07-13 19:54:46,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:46,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:46,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40541877] [2021-07-13 19:54:46,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40541877] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:46,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:46,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:54:46,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649509694] [2021-07-13 19:54:46,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:54:46,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:46,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:54:46,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:46,709 INFO L87 Difference]: Start difference. First operand 18475 states and 62123 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:46,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:46,987 INFO L93 Difference]: Finished difference Result 28267 states and 94087 transitions. [2021-07-13 19:54:46,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:54:46,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:46,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:47,054 INFO L225 Difference]: With dead ends: 28267 [2021-07-13 19:54:47,054 INFO L226 Difference]: Without dead ends: 28159 [2021-07-13 19:54:47,054 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 28.3ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:54:47,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28159 states. [2021-07-13 19:54:47,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28159 to 18449. [2021-07-13 19:54:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18449 states, 18448 states have (on average 3.357328707718994) internal successors, (61936), 18448 states have internal predecessors, (61936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18449 states to 18449 states and 61936 transitions. [2021-07-13 19:54:47,562 INFO L78 Accepts]: Start accepts. Automaton has 18449 states and 61936 transitions. Word has length 39 [2021-07-13 19:54:47,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:47,562 INFO L482 AbstractCegarLoop]: Abstraction has 18449 states and 61936 transitions. [2021-07-13 19:54:47,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:47,563 INFO L276 IsEmpty]: Start isEmpty. Operand 18449 states and 61936 transitions. [2021-07-13 19:54:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:47,591 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:47,591 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:47,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-13 19:54:47,591 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:47,592 INFO L82 PathProgramCache]: Analyzing trace with hash -327899718, now seen corresponding path program 22 times [2021-07-13 19:54:47,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:47,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549797382] [2021-07-13 19:54:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:47,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:47,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549797382] [2021-07-13 19:54:47,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549797382] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:47,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:47,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:54:47,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30036475] [2021-07-13 19:54:47,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:54:47,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:47,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:54:47,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:54:47,640 INFO L87 Difference]: Start difference. First operand 18449 states and 61936 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:47,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:47,984 INFO L93 Difference]: Finished difference Result 28032 states and 93171 transitions. [2021-07-13 19:54:47,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 19:54:47,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:47,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:48,050 INFO L225 Difference]: With dead ends: 28032 [2021-07-13 19:54:48,050 INFO L226 Difference]: Without dead ends: 27672 [2021-07-13 19:54:48,051 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-13 19:54:48,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27672 states. [2021-07-13 19:54:48,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27672 to 18187. [2021-07-13 19:54:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18187 states, 18186 states have (on average 3.346530298031453) internal successors, (60860), 18186 states have internal predecessors, (60860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18187 states to 18187 states and 60860 transitions. [2021-07-13 19:54:48,569 INFO L78 Accepts]: Start accepts. Automaton has 18187 states and 60860 transitions. Word has length 39 [2021-07-13 19:54:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:48,570 INFO L482 AbstractCegarLoop]: Abstraction has 18187 states and 60860 transitions. [2021-07-13 19:54:48,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 18187 states and 60860 transitions. [2021-07-13 19:54:48,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:48,598 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:48,598 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:48,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-13 19:54:48,598 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:48,598 INFO L82 PathProgramCache]: Analyzing trace with hash -2006842152, now seen corresponding path program 23 times [2021-07-13 19:54:48,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:48,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474878204] [2021-07-13 19:54:48,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:48,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:48,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474878204] [2021-07-13 19:54:48,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474878204] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:48,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:48,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:54:48,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298498564] [2021-07-13 19:54:48,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:54:48,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:48,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:54:48,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:54:48,659 INFO L87 Difference]: Start difference. First operand 18187 states and 60860 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:49,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:49,152 INFO L93 Difference]: Finished difference Result 27773 states and 91779 transitions. [2021-07-13 19:54:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:54:49,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:49,217 INFO L225 Difference]: With dead ends: 27773 [2021-07-13 19:54:49,217 INFO L226 Difference]: Without dead ends: 27521 [2021-07-13 19:54:49,217 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:54:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2021-07-13 19:54:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 18576. [2021-07-13 19:54:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18576 states, 18575 states have (on average 3.3176312247644684) internal successors, (61625), 18575 states have internal predecessors, (61625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18576 states to 18576 states and 61625 transitions. [2021-07-13 19:54:49,759 INFO L78 Accepts]: Start accepts. Automaton has 18576 states and 61625 transitions. Word has length 39 [2021-07-13 19:54:49,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:49,759 INFO L482 AbstractCegarLoop]: Abstraction has 18576 states and 61625 transitions. [2021-07-13 19:54:49,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:49,760 INFO L276 IsEmpty]: Start isEmpty. Operand 18576 states and 61625 transitions. [2021-07-13 19:54:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:49,788 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:49,789 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:49,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-13 19:54:49,789 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:49,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1115941786, now seen corresponding path program 24 times [2021-07-13 19:54:49,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:49,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542089128] [2021-07-13 19:54:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:49,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:49,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542089128] [2021-07-13 19:54:49,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542089128] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:49,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:49,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:54:49,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360925528] [2021-07-13 19:54:49,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:54:49,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:49,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:54:49,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:49,838 INFO L87 Difference]: Start difference. First operand 18576 states and 61625 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:50,104 INFO L93 Difference]: Finished difference Result 28814 states and 94330 transitions. [2021-07-13 19:54:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:54:50,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:50,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:50,170 INFO L225 Difference]: With dead ends: 28814 [2021-07-13 19:54:50,170 INFO L226 Difference]: Without dead ends: 28630 [2021-07-13 19:54:50,170 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:54:50,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2021-07-13 19:54:50,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 18552. [2021-07-13 19:54:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18552 states, 18551 states have (on average 3.308986038488491) internal successors, (61385), 18551 states have internal predecessors, (61385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18552 states to 18552 states and 61385 transitions. [2021-07-13 19:54:50,660 INFO L78 Accepts]: Start accepts. Automaton has 18552 states and 61385 transitions. Word has length 39 [2021-07-13 19:54:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:50,660 INFO L482 AbstractCegarLoop]: Abstraction has 18552 states and 61385 transitions. [2021-07-13 19:54:50,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand 18552 states and 61385 transitions. [2021-07-13 19:54:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:50,692 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:50,692 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:50,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-13 19:54:50,693 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:50,693 INFO L82 PathProgramCache]: Analyzing trace with hash -773359718, now seen corresponding path program 25 times [2021-07-13 19:54:50,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:50,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940718164] [2021-07-13 19:54:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:50,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:50,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940718164] [2021-07-13 19:54:50,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940718164] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:50,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:50,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:54:50,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624665593] [2021-07-13 19:54:50,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:54:50,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:50,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:54:50,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:54:50,731 INFO L87 Difference]: Start difference. First operand 18552 states and 61385 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:51,020 INFO L93 Difference]: Finished difference Result 28644 states and 93689 transitions. [2021-07-13 19:54:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 19:54:51,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:51,084 INFO L225 Difference]: With dead ends: 28644 [2021-07-13 19:54:51,085 INFO L226 Difference]: Without dead ends: 27824 [2021-07-13 19:54:51,085 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-13 19:54:51,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27824 states. [2021-07-13 19:54:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27824 to 17898. [2021-07-13 19:54:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17898 states, 17897 states have (on average 3.2920601218081242) internal successors, (58918), 17897 states have internal predecessors, (58918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:51,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17898 states to 17898 states and 58918 transitions. [2021-07-13 19:54:51,547 INFO L78 Accepts]: Start accepts. Automaton has 17898 states and 58918 transitions. Word has length 39 [2021-07-13 19:54:51,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:51,547 INFO L482 AbstractCegarLoop]: Abstraction has 17898 states and 58918 transitions. [2021-07-13 19:54:51,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 17898 states and 58918 transitions. [2021-07-13 19:54:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:51,575 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:51,576 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:51,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-13 19:54:51,576 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:51,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:51,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1520345416, now seen corresponding path program 26 times [2021-07-13 19:54:51,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:51,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096596819] [2021-07-13 19:54:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:51,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:51,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096596819] [2021-07-13 19:54:51,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096596819] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:51,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:51,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:54:51,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612768308] [2021-07-13 19:54:51,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:54:51,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:51,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:54:51,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:54:51,617 INFO L87 Difference]: Start difference. First operand 17898 states and 58918 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:52,097 INFO L93 Difference]: Finished difference Result 28142 states and 91490 transitions. [2021-07-13 19:54:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:54:52,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:52,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:52,168 INFO L225 Difference]: With dead ends: 28142 [2021-07-13 19:54:52,168 INFO L226 Difference]: Without dead ends: 26796 [2021-07-13 19:54:52,168 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:54:52,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26796 states. [2021-07-13 19:54:52,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26796 to 17614. [2021-07-13 19:54:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17613 states have (on average 3.2751376823936864) internal successors, (57685), 17613 states have internal predecessors, (57685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 57685 transitions. [2021-07-13 19:54:52,656 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 57685 transitions. Word has length 39 [2021-07-13 19:54:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:52,657 INFO L482 AbstractCegarLoop]: Abstraction has 17614 states and 57685 transitions. [2021-07-13 19:54:52,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 57685 transitions. [2021-07-13 19:54:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:52,683 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:52,683 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:52,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-13 19:54:52,684 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:52,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1628826748, now seen corresponding path program 27 times [2021-07-13 19:54:52,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:52,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199548759] [2021-07-13 19:54:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:52,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:52,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199548759] [2021-07-13 19:54:52,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199548759] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:52,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:52,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:54:52,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802221152] [2021-07-13 19:54:52,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:54:52,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:52,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:54:52,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:54:52,731 INFO L87 Difference]: Start difference. First operand 17614 states and 57685 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:53,115 INFO L93 Difference]: Finished difference Result 27764 states and 89075 transitions. [2021-07-13 19:54:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:54:53,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:53,181 INFO L225 Difference]: With dead ends: 27764 [2021-07-13 19:54:53,181 INFO L226 Difference]: Without dead ends: 26272 [2021-07-13 19:54:53,182 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:54:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26272 states. [2021-07-13 19:54:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26272 to 16042. [2021-07-13 19:54:53,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 16041 states have (on average 3.2308459572345862) internal successors, (51826), 16041 states have internal predecessors, (51826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:53,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 51826 transitions. [2021-07-13 19:54:53,627 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 51826 transitions. Word has length 39 [2021-07-13 19:54:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:53,627 INFO L482 AbstractCegarLoop]: Abstraction has 16042 states and 51826 transitions. [2021-07-13 19:54:53,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 51826 transitions. [2021-07-13 19:54:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:53,652 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:53,652 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:53,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-13 19:54:53,652 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:53,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1990404212, now seen corresponding path program 28 times [2021-07-13 19:54:53,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:53,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931671801] [2021-07-13 19:54:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:53,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:53,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931671801] [2021-07-13 19:54:53,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931671801] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:53,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:53,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:54:53,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487102443] [2021-07-13 19:54:53,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:54:53,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:53,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:54:53,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:54:53,673 INFO L87 Difference]: Start difference. First operand 16042 states and 51826 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:53,834 INFO L93 Difference]: Finished difference Result 26251 states and 83635 transitions. [2021-07-13 19:54:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:54:53,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:54,083 INFO L225 Difference]: With dead ends: 26251 [2021-07-13 19:54:54,084 INFO L226 Difference]: Without dead ends: 25907 [2021-07-13 19:54:54,084 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:54:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25907 states. [2021-07-13 19:54:54,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25907 to 15530. [2021-07-13 19:54:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15529 states have (on average 3.2065168394616523) internal successors, (49794), 15529 states have internal predecessors, (49794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 49794 transitions. [2021-07-13 19:54:54,383 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 49794 transitions. Word has length 39 [2021-07-13 19:54:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:54,383 INFO L482 AbstractCegarLoop]: Abstraction has 15530 states and 49794 transitions. [2021-07-13 19:54:54,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 49794 transitions. [2021-07-13 19:54:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:54,407 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:54,407 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:54,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-13 19:54:54,407 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:54,408 INFO L82 PathProgramCache]: Analyzing trace with hash -486861366, now seen corresponding path program 29 times [2021-07-13 19:54:54,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:54,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758225897] [2021-07-13 19:54:54,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:54,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:54,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758225897] [2021-07-13 19:54:54,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758225897] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:54,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:54,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:54:54,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167784513] [2021-07-13 19:54:54,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:54:54,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:54,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:54:54,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:54,449 INFO L87 Difference]: Start difference. First operand 15530 states and 49794 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:54,870 INFO L93 Difference]: Finished difference Result 19376 states and 57898 transitions. [2021-07-13 19:54:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:54:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:54,906 INFO L225 Difference]: With dead ends: 19376 [2021-07-13 19:54:54,906 INFO L226 Difference]: Without dead ends: 17805 [2021-07-13 19:54:54,907 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:54:54,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17805 states. [2021-07-13 19:54:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17805 to 10863. [2021-07-13 19:54:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10862 states have (on average 3.029736696740932) internal successors, (32909), 10862 states have internal predecessors, (32909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 32909 transitions. [2021-07-13 19:54:55,106 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 32909 transitions. Word has length 39 [2021-07-13 19:54:55,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:55,107 INFO L482 AbstractCegarLoop]: Abstraction has 10863 states and 32909 transitions. [2021-07-13 19:54:55,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:55,107 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 32909 transitions. [2021-07-13 19:54:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:55,122 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:55,122 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:55,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-13 19:54:55,123 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:55,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:55,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1712472694, now seen corresponding path program 30 times [2021-07-13 19:54:55,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:55,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340680643] [2021-07-13 19:54:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:55,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:55,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340680643] [2021-07-13 19:54:55,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340680643] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:55,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:55,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:54:55,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993104257] [2021-07-13 19:54:55,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:54:55,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:55,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:54:55,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:54:55,158 INFO L87 Difference]: Start difference. First operand 10863 states and 32909 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:55,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:55,369 INFO L93 Difference]: Finished difference Result 16060 states and 47771 transitions. [2021-07-13 19:54:55,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 19:54:55,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:55,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:55,399 INFO L225 Difference]: With dead ends: 16060 [2021-07-13 19:54:55,399 INFO L226 Difference]: Without dead ends: 15380 [2021-07-13 19:54:55,399 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-07-13 19:54:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15380 states. [2021-07-13 19:54:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15380 to 10289. [2021-07-13 19:54:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10289 states, 10288 states have (on average 3.010303265940902) internal successors, (30970), 10288 states have internal predecessors, (30970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 30970 transitions. [2021-07-13 19:54:55,644 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 30970 transitions. Word has length 39 [2021-07-13 19:54:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:55,644 INFO L482 AbstractCegarLoop]: Abstraction has 10289 states and 30970 transitions. [2021-07-13 19:54:55,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:55,644 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 30970 transitions. [2021-07-13 19:54:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:55,658 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:55,658 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:55,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-13 19:54:55,659 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:55,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:55,659 INFO L82 PathProgramCache]: Analyzing trace with hash -12539988, now seen corresponding path program 31 times [2021-07-13 19:54:55,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:55,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540158675] [2021-07-13 19:54:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:55,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:55,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540158675] [2021-07-13 19:54:55,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540158675] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:55,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:55,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:54:55,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509933303] [2021-07-13 19:54:55,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:54:55,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:55,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:54:55,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:54:55,708 INFO L87 Difference]: Start difference. First operand 10289 states and 30970 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:56,019 INFO L93 Difference]: Finished difference Result 14404 states and 42007 transitions. [2021-07-13 19:54:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:54:56,019 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:56,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:56,045 INFO L225 Difference]: With dead ends: 14404 [2021-07-13 19:54:56,045 INFO L226 Difference]: Without dead ends: 13806 [2021-07-13 19:54:56,046 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 62.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:54:56,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13806 states. [2021-07-13 19:54:56,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13806 to 9515. [2021-07-13 19:54:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9515 states, 9514 states have (on average 2.974248475930208) internal successors, (28297), 9514 states have internal predecessors, (28297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9515 states to 9515 states and 28297 transitions. [2021-07-13 19:54:56,267 INFO L78 Accepts]: Start accepts. Automaton has 9515 states and 28297 transitions. Word has length 39 [2021-07-13 19:54:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:56,267 INFO L482 AbstractCegarLoop]: Abstraction has 9515 states and 28297 transitions. [2021-07-13 19:54:56,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 9515 states and 28297 transitions. [2021-07-13 19:54:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:56,279 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:56,279 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:56,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-13 19:54:56,280 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:56,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:56,280 INFO L82 PathProgramCache]: Analyzing trace with hash -467836166, now seen corresponding path program 32 times [2021-07-13 19:54:56,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:56,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915841846] [2021-07-13 19:54:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:56,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:56,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915841846] [2021-07-13 19:54:56,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915841846] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:56,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:56,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:54:56,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141732566] [2021-07-13 19:54:56,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:54:56,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:56,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:54:56,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:56,326 INFO L87 Difference]: Start difference. First operand 9515 states and 28297 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:56,562 INFO L93 Difference]: Finished difference Result 14734 states and 43845 transitions. [2021-07-13 19:54:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 19:54:56,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:56,594 INFO L225 Difference]: With dead ends: 14734 [2021-07-13 19:54:56,594 INFO L226 Difference]: Without dead ends: 14686 [2021-07-13 19:54:56,596 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:54:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14686 states. [2021-07-13 19:54:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14686 to 9376. [2021-07-13 19:54:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 9375 states have (on average 2.9634133333333335) internal successors, (27782), 9375 states have internal predecessors, (27782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 27782 transitions. [2021-07-13 19:54:56,779 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 27782 transitions. Word has length 39 [2021-07-13 19:54:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:56,779 INFO L482 AbstractCegarLoop]: Abstraction has 9376 states and 27782 transitions. [2021-07-13 19:54:56,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 27782 transitions. [2021-07-13 19:54:56,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:56,792 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:56,792 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:56,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-13 19:54:56,792 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:56,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:56,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1133062906, now seen corresponding path program 33 times [2021-07-13 19:54:56,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:56,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358071378] [2021-07-13 19:54:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:56,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:56,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358071378] [2021-07-13 19:54:56,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358071378] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:56,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:56,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:54:56,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219897337] [2021-07-13 19:54:56,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:54:56,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:56,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:54:56,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:54:56,829 INFO L87 Difference]: Start difference. First operand 9376 states and 27782 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:57,198 INFO L93 Difference]: Finished difference Result 14599 states and 43322 transitions. [2021-07-13 19:54:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 19:54:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:57,225 INFO L225 Difference]: With dead ends: 14599 [2021-07-13 19:54:57,225 INFO L226 Difference]: Without dead ends: 14479 [2021-07-13 19:54:57,225 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:54:57,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2021-07-13 19:54:57,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 9268. [2021-07-13 19:54:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 9267 states have (on average 2.9584547318441783) internal successors, (27416), 9267 states have internal predecessors, (27416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:57,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 27416 transitions. [2021-07-13 19:54:57,383 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 27416 transitions. Word has length 39 [2021-07-13 19:54:57,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:57,383 INFO L482 AbstractCegarLoop]: Abstraction has 9268 states and 27416 transitions. [2021-07-13 19:54:57,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 27416 transitions. [2021-07-13 19:54:57,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:57,396 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:57,396 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:57,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-13 19:54:57,396 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:57,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:57,396 INFO L82 PathProgramCache]: Analyzing trace with hash -545879528, now seen corresponding path program 34 times [2021-07-13 19:54:57,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:57,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579354524] [2021-07-13 19:54:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:57,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:57,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579354524] [2021-07-13 19:54:57,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579354524] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:57,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:57,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:54:57,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349192658] [2021-07-13 19:54:57,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:54:57,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:57,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:54:57,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:54:57,450 INFO L87 Difference]: Start difference. First operand 9268 states and 27416 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:57,755 INFO L93 Difference]: Finished difference Result 14208 states and 42268 transitions. [2021-07-13 19:54:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:54:57,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:57,784 INFO L225 Difference]: With dead ends: 14208 [2021-07-13 19:54:57,784 INFO L226 Difference]: Without dead ends: 14016 [2021-07-13 19:54:57,784 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:54:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2021-07-13 19:54:57,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 9164. [2021-07-13 19:54:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 9163 states have (on average 2.960820691913129) internal successors, (27130), 9163 states have internal predecessors, (27130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 27130 transitions. [2021-07-13 19:54:58,015 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 27130 transitions. Word has length 39 [2021-07-13 19:54:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:58,015 INFO L482 AbstractCegarLoop]: Abstraction has 9164 states and 27130 transitions. [2021-07-13 19:54:58,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:58,015 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 27130 transitions. [2021-07-13 19:54:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:58,029 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:58,029 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:58,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-13 19:54:58,029 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:58,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1948403812, now seen corresponding path program 35 times [2021-07-13 19:54:58,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:58,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142046607] [2021-07-13 19:54:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:58,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:58,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142046607] [2021-07-13 19:54:58,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142046607] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:58,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:58,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:54:58,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345307742] [2021-07-13 19:54:58,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:54:58,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:58,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:54:58,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:54:58,082 INFO L87 Difference]: Start difference. First operand 9164 states and 27130 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:58,470 INFO L93 Difference]: Finished difference Result 14134 states and 42012 transitions. [2021-07-13 19:54:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 19:54:58,471 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:58,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:58,496 INFO L225 Difference]: With dead ends: 14134 [2021-07-13 19:54:58,496 INFO L226 Difference]: Without dead ends: 13966 [2021-07-13 19:54:58,496 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-13 19:54:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13966 states. [2021-07-13 19:54:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13966 to 9158. [2021-07-13 19:54:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9158 states, 9157 states have (on average 2.9588293109096866) internal successors, (27094), 9157 states have internal predecessors, (27094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:58,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9158 states to 9158 states and 27094 transitions. [2021-07-13 19:54:58,652 INFO L78 Accepts]: Start accepts. Automaton has 9158 states and 27094 transitions. Word has length 39 [2021-07-13 19:54:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:58,652 INFO L482 AbstractCegarLoop]: Abstraction has 9158 states and 27094 transitions. [2021-07-13 19:54:58,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:58,652 INFO L276 IsEmpty]: Start isEmpty. Operand 9158 states and 27094 transitions. [2021-07-13 19:54:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:58,664 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:58,665 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:58,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-13 19:54:58,665 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:58,665 INFO L82 PathProgramCache]: Analyzing trace with hash -426772262, now seen corresponding path program 36 times [2021-07-13 19:54:58,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:58,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882263971] [2021-07-13 19:54:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:58,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:58,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882263971] [2021-07-13 19:54:58,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882263971] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:58,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:58,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:54:58,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481691100] [2021-07-13 19:54:58,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:54:58,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:58,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:54:58,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:54:58,701 INFO L87 Difference]: Start difference. First operand 9158 states and 27094 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:58,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:58,965 INFO L93 Difference]: Finished difference Result 14594 states and 43056 transitions. [2021-07-13 19:54:58,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 19:54:58,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:58,989 INFO L225 Difference]: With dead ends: 14594 [2021-07-13 19:54:58,989 INFO L226 Difference]: Without dead ends: 14466 [2021-07-13 19:54:58,990 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:54:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14466 states. [2021-07-13 19:54:59,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 9094. [2021-07-13 19:54:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 9093 states have (on average 2.9493016606180578) internal successors, (26818), 9093 states have internal predecessors, (26818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 26818 transitions. [2021-07-13 19:54:59,139 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 26818 transitions. Word has length 39 [2021-07-13 19:54:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:59,140 INFO L482 AbstractCegarLoop]: Abstraction has 9094 states and 26818 transitions. [2021-07-13 19:54:59,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 26818 transitions. [2021-07-13 19:54:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:59,152 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:59,152 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:59,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-13 19:54:59,152 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:59,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:59,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1978893530, now seen corresponding path program 37 times [2021-07-13 19:54:59,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:59,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754546746] [2021-07-13 19:54:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:59,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:59,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754546746] [2021-07-13 19:54:59,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754546746] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:59,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:59,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:54:59,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75893042] [2021-07-13 19:54:59,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:54:59,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:59,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:54:59,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:54:59,187 INFO L87 Difference]: Start difference. First operand 9094 states and 26818 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:59,445 INFO L93 Difference]: Finished difference Result 14494 states and 42702 transitions. [2021-07-13 19:54:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 19:54:59,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:59,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:59,470 INFO L225 Difference]: With dead ends: 14494 [2021-07-13 19:54:59,470 INFO L226 Difference]: Without dead ends: 14022 [2021-07-13 19:54:59,470 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:54:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2021-07-13 19:54:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 8890. [2021-07-13 19:54:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8890 states, 8889 states have (on average 2.937338283271459) internal successors, (26110), 8889 states have internal predecessors, (26110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8890 states to 8890 states and 26110 transitions. [2021-07-13 19:54:59,634 INFO L78 Accepts]: Start accepts. Automaton has 8890 states and 26110 transitions. Word has length 39 [2021-07-13 19:54:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:54:59,634 INFO L482 AbstractCegarLoop]: Abstraction has 8890 states and 26110 transitions. [2021-07-13 19:54:59,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 8890 states and 26110 transitions. [2021-07-13 19:54:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:54:59,646 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:54:59,646 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:54:59,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-13 19:54:59,646 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:54:59,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:54:59,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1231907832, now seen corresponding path program 38 times [2021-07-13 19:54:59,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:54:59,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451988470] [2021-07-13 19:54:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:54:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:54:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:54:59,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:54:59,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451988470] [2021-07-13 19:54:59,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451988470] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:54:59,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:54:59,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:54:59,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027890] [2021-07-13 19:54:59,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:54:59,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:54:59,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:54:59,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:54:59,692 INFO L87 Difference]: Start difference. First operand 8890 states and 26110 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:54:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:54:59,960 INFO L93 Difference]: Finished difference Result 14086 states and 41514 transitions. [2021-07-13 19:54:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:54:59,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:54:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:54:59,983 INFO L225 Difference]: With dead ends: 14086 [2021-07-13 19:54:59,983 INFO L226 Difference]: Without dead ends: 13386 [2021-07-13 19:54:59,983 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:55:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13386 states. [2021-07-13 19:55:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13386 to 8674. [2021-07-13 19:55:00,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 2.945462930935086) internal successors, (25546), 8673 states have internal predecessors, (25546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 25546 transitions. [2021-07-13 19:55:00,129 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 25546 transitions. Word has length 39 [2021-07-13 19:55:00,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:00,129 INFO L482 AbstractCegarLoop]: Abstraction has 8674 states and 25546 transitions. [2021-07-13 19:55:00,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 25546 transitions. [2021-07-13 19:55:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:55:00,140 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:00,140 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:55:00,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-13 19:55:00,140 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:00,140 INFO L82 PathProgramCache]: Analyzing trace with hash 64823676, now seen corresponding path program 39 times [2021-07-13 19:55:00,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:00,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882217779] [2021-07-13 19:55:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:00,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:00,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882217779] [2021-07-13 19:55:00,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882217779] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:00,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:00,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:55:00,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934360589] [2021-07-13 19:55:00,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:55:00,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:00,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:55:00,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:55:00,185 INFO L87 Difference]: Start difference. First operand 8674 states and 25546 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:00,542 INFO L93 Difference]: Finished difference Result 13828 states and 40806 transitions. [2021-07-13 19:55:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 19:55:00,542 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:55:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:00,568 INFO L225 Difference]: With dead ends: 13828 [2021-07-13 19:55:00,568 INFO L226 Difference]: Without dead ends: 13182 [2021-07-13 19:55:00,568 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-13 19:55:00,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2021-07-13 19:55:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 8470. [2021-07-13 19:55:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8469 states have (on average 2.964694769158106) internal successors, (25108), 8469 states have internal predecessors, (25108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 25108 transitions. [2021-07-13 19:55:00,712 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 25108 transitions. Word has length 39 [2021-07-13 19:55:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:00,712 INFO L482 AbstractCegarLoop]: Abstraction has 8470 states and 25108 transitions. [2021-07-13 19:55:00,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 25108 transitions. [2021-07-13 19:55:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:55:00,723 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:00,723 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:55:00,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-13 19:55:00,723 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:00,724 INFO L82 PathProgramCache]: Analyzing trace with hash -695140544, now seen corresponding path program 40 times [2021-07-13 19:55:00,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:00,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923503144] [2021-07-13 19:55:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:00,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:00,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923503144] [2021-07-13 19:55:00,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923503144] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:00,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:00,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:55:00,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654886212] [2021-07-13 19:55:00,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:55:00,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:00,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:55:00,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:55:00,769 INFO L87 Difference]: Start difference. First operand 8470 states and 25108 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:01,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:01,138 INFO L93 Difference]: Finished difference Result 13371 states and 39611 transitions. [2021-07-13 19:55:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 19:55:01,138 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:55:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:01,161 INFO L225 Difference]: With dead ends: 13371 [2021-07-13 19:55:01,161 INFO L226 Difference]: Without dead ends: 12735 [2021-07-13 19:55:01,161 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-13 19:55:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2021-07-13 19:55:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 7590. [2021-07-13 19:55:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7590 states, 7589 states have (on average 2.960469100013177) internal successors, (22467), 7589 states have internal predecessors, (22467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 22467 transitions. [2021-07-13 19:55:01,291 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 22467 transitions. Word has length 39 [2021-07-13 19:55:01,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:01,292 INFO L482 AbstractCegarLoop]: Abstraction has 7590 states and 22467 transitions. [2021-07-13 19:55:01,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 22467 transitions. [2021-07-13 19:55:01,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:55:01,302 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:01,302 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:55:01,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-13 19:55:01,302 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:01,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:01,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1794340302, now seen corresponding path program 41 times [2021-07-13 19:55:01,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:01,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600881909] [2021-07-13 19:55:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:01,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:01,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600881909] [2021-07-13 19:55:01,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600881909] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:01,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:01,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:55:01,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148068426] [2021-07-13 19:55:01,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:55:01,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:01,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:55:01,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:55:01,335 INFO L87 Difference]: Start difference. First operand 7590 states and 22467 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:01,593 INFO L93 Difference]: Finished difference Result 12745 states and 37674 transitions. [2021-07-13 19:55:01,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 19:55:01,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:55:01,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:01,615 INFO L225 Difference]: With dead ends: 12745 [2021-07-13 19:55:01,616 INFO L226 Difference]: Without dead ends: 12601 [2021-07-13 19:55:01,616 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:55:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-07-13 19:55:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 7346. [2021-07-13 19:55:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 7345 states have (on average 2.9400953029271615) internal successors, (21595), 7345 states have internal predecessors, (21595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 21595 transitions. [2021-07-13 19:55:01,740 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 21595 transitions. Word has length 39 [2021-07-13 19:55:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:01,741 INFO L482 AbstractCegarLoop]: Abstraction has 7346 states and 21595 transitions. [2021-07-13 19:55:01,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 21595 transitions. [2021-07-13 19:55:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:55:01,750 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:01,750 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:55:01,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-13 19:55:01,750 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:01,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1613437490, now seen corresponding path program 42 times [2021-07-13 19:55:01,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:01,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626252720] [2021-07-13 19:55:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:01,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:01,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626252720] [2021-07-13 19:55:01,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626252720] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:01,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:01,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:55:01,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792662216] [2021-07-13 19:55:01,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:55:01,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:01,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:55:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:55:01,794 INFO L87 Difference]: Start difference. First operand 7346 states and 21595 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:02,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:02,112 INFO L93 Difference]: Finished difference Result 11821 states and 34814 transitions. [2021-07-13 19:55:02,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:55:02,113 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:55:02,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:02,133 INFO L225 Difference]: With dead ends: 11821 [2021-07-13 19:55:02,133 INFO L226 Difference]: Without dead ends: 11629 [2021-07-13 19:55:02,133 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 71.4ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:55:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11629 states. [2021-07-13 19:55:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11629 to 7242. [2021-07-13 19:55:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 2.9428255765778206) internal successors, (21309), 7241 states have internal predecessors, (21309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 21309 transitions. [2021-07-13 19:55:02,271 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 21309 transitions. Word has length 39 [2021-07-13 19:55:02,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:02,271 INFO L482 AbstractCegarLoop]: Abstraction has 7242 states and 21309 transitions. [2021-07-13 19:55:02,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 21309 transitions. [2021-07-13 19:55:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:55:02,281 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:02,281 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:55:02,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-13 19:55:02,282 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:02,282 INFO L82 PathProgramCache]: Analyzing trace with hash -798629012, now seen corresponding path program 43 times [2021-07-13 19:55:02,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:02,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489215187] [2021-07-13 19:55:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:02,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:02,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489215187] [2021-07-13 19:55:02,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489215187] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:02,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:02,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:55:02,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874081763] [2021-07-13 19:55:02,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:55:02,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:02,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:55:02,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:55:02,332 INFO L87 Difference]: Start difference. First operand 7242 states and 21309 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:02,692 INFO L93 Difference]: Finished difference Result 11315 states and 33296 transitions. [2021-07-13 19:55:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 19:55:02,693 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:55:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:02,712 INFO L225 Difference]: With dead ends: 11315 [2021-07-13 19:55:02,712 INFO L226 Difference]: Without dead ends: 11099 [2021-07-13 19:55:02,712 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-13 19:55:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-07-13 19:55:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 7008. [2021-07-13 19:55:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 2.97445411731126) internal successors, (20842), 7007 states have internal predecessors, (20842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 20842 transitions. [2021-07-13 19:55:02,862 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 20842 transitions. Word has length 39 [2021-07-13 19:55:02,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:02,862 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 20842 transitions. [2021-07-13 19:55:02,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 20842 transitions. [2021-07-13 19:55:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:55:02,872 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:02,873 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:55:02,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-13 19:55:02,873 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:02,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:02,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1171875732, now seen corresponding path program 44 times [2021-07-13 19:55:02,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:02,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764520229] [2021-07-13 19:55:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:02,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:02,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764520229] [2021-07-13 19:55:02,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764520229] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:02,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:02,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 19:55:02,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717979092] [2021-07-13 19:55:02,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 19:55:02,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:02,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 19:55:02,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-13 19:55:02,904 INFO L87 Difference]: Start difference. First operand 7008 states and 20842 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:03,006 INFO L93 Difference]: Finished difference Result 9444 states and 26929 transitions. [2021-07-13 19:55:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:55:03,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:55:03,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:03,022 INFO L225 Difference]: With dead ends: 9444 [2021-07-13 19:55:03,022 INFO L226 Difference]: Without dead ends: 8824 [2021-07-13 19:55:03,022 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:55:03,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2021-07-13 19:55:03,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 4125. [2021-07-13 19:55:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4124 states have (on average 2.908341416100873) internal successors, (11994), 4124 states have internal predecessors, (11994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 11994 transitions. [2021-07-13 19:55:03,102 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 11994 transitions. Word has length 39 [2021-07-13 19:55:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:03,102 INFO L482 AbstractCegarLoop]: Abstraction has 4125 states and 11994 transitions. [2021-07-13 19:55:03,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 11994 transitions. [2021-07-13 19:55:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:55:03,107 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:03,107 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:55:03,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-13 19:55:03,107 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash -584066286, now seen corresponding path program 45 times [2021-07-13 19:55:03,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:03,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988626300] [2021-07-13 19:55:03,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:03,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:03,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988626300] [2021-07-13 19:55:03,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988626300] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:03,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:03,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:55:03,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678161795] [2021-07-13 19:55:03,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:55:03,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:03,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:55:03,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:55:03,141 INFO L87 Difference]: Start difference. First operand 4125 states and 11994 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:03,297 INFO L93 Difference]: Finished difference Result 6107 states and 16719 transitions. [2021-07-13 19:55:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:55:03,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:55:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:03,305 INFO L225 Difference]: With dead ends: 6107 [2021-07-13 19:55:03,305 INFO L226 Difference]: Without dead ends: 4693 [2021-07-13 19:55:03,306 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 31.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:55:03,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2021-07-13 19:55:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 2542. [2021-07-13 19:55:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2541 states have (on average 2.786698150334514) internal successors, (7081), 2541 states have internal predecessors, (7081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 7081 transitions. [2021-07-13 19:55:03,342 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 7081 transitions. Word has length 39 [2021-07-13 19:55:03,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:03,342 INFO L482 AbstractCegarLoop]: Abstraction has 2542 states and 7081 transitions. [2021-07-13 19:55:03,342 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 7081 transitions. [2021-07-13 19:55:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:55:03,345 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:03,345 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:55:03,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-13 19:55:03,345 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:03,346 INFO L82 PathProgramCache]: Analyzing trace with hash 146118098, now seen corresponding path program 46 times [2021-07-13 19:55:03,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:03,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049919702] [2021-07-13 19:55:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:03,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:03,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049919702] [2021-07-13 19:55:03,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049919702] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:03,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:03,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:55:03,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023635666] [2021-07-13 19:55:03,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:55:03,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:03,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:55:03,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:55:03,410 INFO L87 Difference]: Start difference. First operand 2542 states and 7081 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:03,623 INFO L93 Difference]: Finished difference Result 1862 states and 4307 transitions. [2021-07-13 19:55:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:55:03,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:55:03,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:03,624 INFO L225 Difference]: With dead ends: 1862 [2021-07-13 19:55:03,624 INFO L226 Difference]: Without dead ends: 648 [2021-07-13 19:55:03,625 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 73.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:55:03,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-07-13 19:55:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 456. [2021-07-13 19:55:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.4329670329670328) internal successors, (1107), 455 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1107 transitions. [2021-07-13 19:55:03,630 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1107 transitions. Word has length 39 [2021-07-13 19:55:03,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:03,630 INFO L482 AbstractCegarLoop]: Abstraction has 456 states and 1107 transitions. [2021-07-13 19:55:03,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,630 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1107 transitions. [2021-07-13 19:55:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 19:55:03,630 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:55:03,630 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:55:03,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-13 19:55:03,631 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-13 19:55:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:55:03,631 INFO L82 PathProgramCache]: Analyzing trace with hash 301544324, now seen corresponding path program 47 times [2021-07-13 19:55:03,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:55:03,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975088138] [2021-07-13 19:55:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:55:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:55:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:55:03,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:55:03,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975088138] [2021-07-13 19:55:03,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975088138] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:55:03,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:55:03,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:55:03,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229335456] [2021-07-13 19:55:03,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:55:03,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:55:03,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:55:03,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:55:03,686 INFO L87 Difference]: Start difference. First operand 456 states and 1107 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:55:03,851 INFO L93 Difference]: Finished difference Result 391 states and 811 transitions. [2021-07-13 19:55:03,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 19:55:03,852 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-13 19:55:03,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:55:03,852 INFO L225 Difference]: With dead ends: 391 [2021-07-13 19:55:03,852 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 19:55:03,852 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:55:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 19:55:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 19:55:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 19:55:03,853 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-07-13 19:55:03,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:55:03,853 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 19:55:03,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:55:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 19:55:03,853 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 19:55:03,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-13 19:55:03,855 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 19:55:03,856 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 07:55:03 BasicIcfg [2021-07-13 19:55:03,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 19:55:03,857 INFO L168 Benchmark]: Toolchain (without parser) took 43859.69 ms. Allocated memory was 216.0 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 195.7 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 5.7 GB. Max. memory is 8.0 GB. [2021-07-13 19:55:03,857 INFO L168 Benchmark]: Boogie PL CUP Parser took 1.06 ms. Allocated memory is still 216.0 MB. Free memory is still 196.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:55:03,857 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.34 ms. Allocated memory is still 216.0 MB. Free memory was 195.7 MB in the beginning and 194.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:55:03,857 INFO L168 Benchmark]: Boogie Preprocessor took 14.62 ms. Allocated memory is still 216.0 MB. Free memory was 194.2 MB in the beginning and 193.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:55:03,857 INFO L168 Benchmark]: RCFGBuilder took 218.34 ms. Allocated memory is still 216.0 MB. Free memory was 193.1 MB in the beginning and 177.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-07-13 19:55:03,857 INFO L168 Benchmark]: TraceAbstraction took 43592.64 ms. Allocated memory was 216.0 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 177.4 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 5.7 GB. Max. memory is 8.0 GB. [2021-07-13 19:55:03,857 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 1.06 ms. Allocated memory is still 216.0 MB. Free memory is still 196.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 30.34 ms. Allocated memory is still 216.0 MB. Free memory was 195.7 MB in the beginning and 194.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.62 ms. Allocated memory is still 216.0 MB. Free memory was 194.2 MB in the beginning and 193.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 218.34 ms. Allocated memory is still 216.0 MB. Free memory was 193.1 MB in the beginning and 177.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 43592.64 ms. Allocated memory was 216.0 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 177.4 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 5.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43518.4ms, OverallIterations: 47, TraceHistogramMax: 1, EmptinessCheckTime: 1722.3ms, AutomataDifference: 19184.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 449.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3516 SDtfs, 5019 SDslu, 12265 SDs, 0 SdLazy, 13048 SolverSat, 2043 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5768.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2070.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24666occurred in iteration=11, InterpolantAutomatonStates: 453, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19709.6ms AutomataMinimizationTime, 47 MinimizatonAttempts, 380099 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.4ms SsaConstructionTime, 193.6ms SatisfiabilityAnalysisTime, 1904.8ms InterpolantComputationTime, 1833 NumberOfCodeBlocks, 1833 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1786 ConstructedInterpolants, 0 QuantifiedInterpolants, 5210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...