/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 00:36:45,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 00:36:45,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 00:36:45,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 00:36:45,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-11 00:36:45,255 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 00:36:45,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 00:36:45,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-11 00:36:45,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-11 00:36:45,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 00:36:45,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 00:36:45,257 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 00:36:45,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 00:36:45,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 00:36:45,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 00:36:45,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 00:36:45,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 00:36:45,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 00:36:45,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 00:36:45,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 00:36:45,258 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 00:36:45,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 00:36:45,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 00:36:45,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 00:36:45,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 00:36:45,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 00:36:45,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 00:36:45,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 00:36:45,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 00:36:45,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 00:36:45,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 00:36:45,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 00:36:45,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 00:36:45,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 00:36:45,259 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 00:36:45,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 00:36:45,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 00:36:45,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 00:36:45,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 00:36:45,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 00:36:45,500 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 00:36:45,501 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 00:36:45,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-03-11 00:36:45,502 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-03-11 00:36:45,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 00:36:45,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 00:36:45,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 00:36:45,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 00:36:45,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 00:36:45,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/1) ... [2021-03-11 00:36:45,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/1) ... [2021-03-11 00:36:45,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 00:36:45,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 00:36:45,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 00:36:45,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 00:36:45,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/1) ... [2021-03-11 00:36:45,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/1) ... [2021-03-11 00:36:45,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/1) ... [2021-03-11 00:36:45,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/1) ... [2021-03-11 00:36:45,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/1) ... [2021-03-11 00:36:45,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/1) ... [2021-03-11 00:36:45,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/1) ... [2021-03-11 00:36:45,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 00:36:45,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 00:36:45,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 00:36:45,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 00:36:45,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 00:36:45,641 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 00:36:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 00:36:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 00:36:45,641 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 00:36:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 00:36:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 00:36:45,641 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 00:36:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 00:36:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 00:36:45,642 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 00:36:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 00:36:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 00:36:45,642 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-11 00:36:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-11 00:36:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-11 00:36:45,643 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 00:36:45,839 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 00:36:45,839 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 00:36:45,841 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 12:36:45 BoogieIcfgContainer [2021-03-11 00:36:45,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 00:36:45,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 00:36:45,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 00:36:45,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 00:36:45,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 12:36:45" (1/2) ... [2021-03-11 00:36:45,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595ff439 and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 12:36:45, skipping insertion in model container [2021-03-11 00:36:45,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 12:36:45" (2/2) ... [2021-03-11 00:36:45,847 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-03-11 00:36:45,851 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 00:36:45,852 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 00:36:45,855 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 00:36:45,855 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 00:36:45,906 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 00:36:45,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 00:36:45,943 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 00:36:45,943 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 00:36:45,943 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 00:36:45,944 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 00:36:45,944 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 00:36:45,944 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 00:36:45,944 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 00:36:45,944 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 00:36:45,953 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 45 transitions, 122 flow [2021-03-11 00:36:46,415 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:46,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:36:46,474 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:36:46,475 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:36:46,477 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:36:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:36:46,485 INFO L82 PathProgramCache]: Analyzing trace with hash -127225446, now seen corresponding path program 1 times [2021-03-11 00:36:46,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:36:46,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456247611] [2021-03-11 00:36:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:36:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:36:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:36:46,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456247611] [2021-03-11 00:36:46,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:36:46,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 00:36:46,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767868402] [2021-03-11 00:36:46,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 00:36:46,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:36:46,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 00:36:46,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 00:36:46,643 INFO L87 Difference]: Start difference. First operand has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 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 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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) [2021-03-11 00:36:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:36:46,711 INFO L93 Difference]: Finished difference Result 4197 states and 14419 transitions. [2021-03-11 00:36:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 00:36:46,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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 [2021-03-11 00:36:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:36:46,750 INFO L225 Difference]: With dead ends: 4197 [2021-03-11 00:36:46,750 INFO L226 Difference]: Without dead ends: 4197 [2021-03-11 00:36:46,751 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 00:36:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-03-11 00:36:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 4197. [2021-03-11 00:36:46,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 4196 states have (on average 3.436367969494757) internal successors, (14419), 4196 states have internal predecessors, (14419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 14419 transitions. [2021-03-11 00:36:47,014 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 14419 transitions. Word has length 39 [2021-03-11 00:36:47,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:36:47,015 INFO L480 AbstractCegarLoop]: Abstraction has 4197 states and 14419 transitions. [2021-03-11 00:36:47,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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) [2021-03-11 00:36:47,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 14419 transitions. [2021-03-11 00:36:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:36:47,030 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:36:47,031 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:36:47,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 00:36:47,032 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:36:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:36:47,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1294182084, now seen corresponding path program 2 times [2021-03-11 00:36:47,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:36:47,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661005024] [2021-03-11 00:36:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:36:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:36:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:36:47,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661005024] [2021-03-11 00:36:47,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:36:47,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 00:36:47,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49558392] [2021-03-11 00:36:47,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 00:36:47,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:36:47,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 00:36:47,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 00:36:47,086 INFO L87 Difference]: Start difference. First operand 4197 states and 14419 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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) [2021-03-11 00:36:47,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:36:47,114 INFO L93 Difference]: Finished difference Result 3290 states and 11077 transitions. [2021-03-11 00:36:47,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 00:36:47,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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 [2021-03-11 00:36:47,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:36:47,131 INFO L225 Difference]: With dead ends: 3290 [2021-03-11 00:36:47,131 INFO L226 Difference]: Without dead ends: 3290 [2021-03-11 00:36:47,132 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 00:36:47,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-03-11 00:36:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2021-03-11 00:36:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 3.367892976588629) internal successors, (11077), 3289 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 11077 transitions. [2021-03-11 00:36:47,271 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 11077 transitions. Word has length 39 [2021-03-11 00:36:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:36:47,271 INFO L480 AbstractCegarLoop]: Abstraction has 3290 states and 11077 transitions. [2021-03-11 00:36:47,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 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) [2021-03-11 00:36:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 11077 transitions. [2021-03-11 00:36:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:36:47,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:36:47,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:36:47,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 00:36:47,284 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:36:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:36:47,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1879996152, now seen corresponding path program 3 times [2021-03-11 00:36:47,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:36:47,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141198136] [2021-03-11 00:36:47,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:36:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:36:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:36:47,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141198136] [2021-03-11 00:36:47,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:36:47,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:36:47,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739199382] [2021-03-11 00:36:47,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:36:47,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:36:47,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:36:47,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:36:47,780 INFO L87 Difference]: Start difference. First operand 3290 states and 11077 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:36:49,022 INFO L93 Difference]: Finished difference Result 3861 states and 12851 transitions. [2021-03-11 00:36:49,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 00:36:49,022 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:36:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:36:49,039 INFO L225 Difference]: With dead ends: 3861 [2021-03-11 00:36:49,040 INFO L226 Difference]: Without dead ends: 3794 [2021-03-11 00:36:49,041 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 753.3ms TimeCoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 00:36:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2021-03-11 00:36:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3406. [2021-03-11 00:36:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 3.3612334801762116) internal successors, (11445), 3405 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 11445 transitions. [2021-03-11 00:36:49,139 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 11445 transitions. Word has length 39 [2021-03-11 00:36:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:36:49,145 INFO L480 AbstractCegarLoop]: Abstraction has 3406 states and 11445 transitions. [2021-03-11 00:36:49,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 11445 transitions. [2021-03-11 00:36:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:36:49,153 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:36:49,153 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:36:49,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 00:36:49,153 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:36:49,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:36:49,154 INFO L82 PathProgramCache]: Analyzing trace with hash 160380182, now seen corresponding path program 4 times [2021-03-11 00:36:49,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:36:49,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919166160] [2021-03-11 00:36:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:36:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:36:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:36:49,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919166160] [2021-03-11 00:36:49,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:36:49,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:36:49,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499914757] [2021-03-11 00:36:49,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:36:49,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:36:49,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:36:49,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:36:49,492 INFO L87 Difference]: Start difference. First operand 3406 states and 11445 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:51,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:36:51,055 INFO L93 Difference]: Finished difference Result 3950 states and 13052 transitions. [2021-03-11 00:36:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 00:36:51,056 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:36:51,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:36:51,072 INFO L225 Difference]: With dead ends: 3950 [2021-03-11 00:36:51,073 INFO L226 Difference]: Without dead ends: 3907 [2021-03-11 00:36:51,073 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 900.1ms TimeCoverageRelationStatistics Valid=249, Invalid=2301, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:36:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-03-11 00:36:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3412. [2021-03-11 00:36:51,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 3.359132219290531) internal successors, (11458), 3411 states have internal predecessors, (11458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:51,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 11458 transitions. [2021-03-11 00:36:51,148 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 11458 transitions. Word has length 39 [2021-03-11 00:36:51,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:36:51,148 INFO L480 AbstractCegarLoop]: Abstraction has 3412 states and 11458 transitions. [2021-03-11 00:36:51,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:51,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 11458 transitions. [2021-03-11 00:36:51,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:36:51,154 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:36:51,154 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:36:51,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 00:36:51,154 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:36:51,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:36:51,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1620218120, now seen corresponding path program 5 times [2021-03-11 00:36:51,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:36:51,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022776524] [2021-03-11 00:36:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:36:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:36:51,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:36:51,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022776524] [2021-03-11 00:36:51,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:36:51,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:36:51,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006020412] [2021-03-11 00:36:51,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:36:51,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:36:51,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:36:51,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:36:51,369 INFO L87 Difference]: Start difference. First operand 3412 states and 11458 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:36:52,883 INFO L93 Difference]: Finished difference Result 3905 states and 12948 transitions. [2021-03-11 00:36:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 00:36:52,885 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:36:52,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:36:52,898 INFO L225 Difference]: With dead ends: 3905 [2021-03-11 00:36:52,898 INFO L226 Difference]: Without dead ends: 3841 [2021-03-11 00:36:52,899 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 890.9ms TimeCoverageRelationStatistics Valid=240, Invalid=2210, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 00:36:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2021-03-11 00:36:52,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3394. [2021-03-11 00:36:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3642793987621573) internal successors, (11415), 3393 states have internal predecessors, (11415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11415 transitions. [2021-03-11 00:36:52,998 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11415 transitions. Word has length 39 [2021-03-11 00:36:52,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:36:52,999 INFO L480 AbstractCegarLoop]: Abstraction has 3394 states and 11415 transitions. [2021-03-11 00:36:52,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:52,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11415 transitions. [2021-03-11 00:36:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:36:53,006 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:36:53,006 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:36:53,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 00:36:53,006 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:36:53,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:36:53,007 INFO L82 PathProgramCache]: Analyzing trace with hash -999783720, now seen corresponding path program 6 times [2021-03-11 00:36:53,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:36:53,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588154352] [2021-03-11 00:36:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:36:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:36:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:36:53,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588154352] [2021-03-11 00:36:53,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:36:53,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:36:53,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976386912] [2021-03-11 00:36:53,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:36:53,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:36:53,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:36:53,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:36:53,264 INFO L87 Difference]: Start difference. First operand 3394 states and 11415 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:36:54,305 INFO L93 Difference]: Finished difference Result 3861 states and 12845 transitions. [2021-03-11 00:36:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 00:36:54,306 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:36:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:36:54,317 INFO L225 Difference]: With dead ends: 3861 [2021-03-11 00:36:54,317 INFO L226 Difference]: Without dead ends: 3794 [2021-03-11 00:36:54,317 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 591.9ms TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 00:36:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2021-03-11 00:36:54,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3402. [2021-03-11 00:36:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.3610702734489855) internal successors, (11431), 3401 states have internal predecessors, (11431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11431 transitions. [2021-03-11 00:36:54,405 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11431 transitions. Word has length 39 [2021-03-11 00:36:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:36:54,405 INFO L480 AbstractCegarLoop]: Abstraction has 3402 states and 11431 transitions. [2021-03-11 00:36:54,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11431 transitions. [2021-03-11 00:36:54,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:36:54,413 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:36:54,414 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:36:54,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 00:36:54,415 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:36:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:36:54,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1130378568, now seen corresponding path program 7 times [2021-03-11 00:36:54,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:36:54,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861756768] [2021-03-11 00:36:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:36:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:36:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:36:54,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861756768] [2021-03-11 00:36:54,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:36:54,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:36:54,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229026871] [2021-03-11 00:36:54,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:36:54,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:36:54,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:36:54,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:36:54,679 INFO L87 Difference]: Start difference. First operand 3402 states and 11431 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:55,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:36:55,763 INFO L93 Difference]: Finished difference Result 3849 states and 12805 transitions. [2021-03-11 00:36:55,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:36:55,763 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:36:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:36:55,774 INFO L225 Difference]: With dead ends: 3849 [2021-03-11 00:36:55,774 INFO L226 Difference]: Without dead ends: 3786 [2021-03-11 00:36:55,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 647.9ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:36:55,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-03-11 00:36:55,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3394. [2021-03-11 00:36:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3631005010315356) internal successors, (11411), 3393 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11411 transitions. [2021-03-11 00:36:55,854 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11411 transitions. Word has length 39 [2021-03-11 00:36:55,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:36:55,854 INFO L480 AbstractCegarLoop]: Abstraction has 3394 states and 11411 transitions. [2021-03-11 00:36:55,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11411 transitions. [2021-03-11 00:36:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:36:55,861 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:36:55,861 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:36:55,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 00:36:55,861 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:36:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:36:55,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1266057160, now seen corresponding path program 8 times [2021-03-11 00:36:55,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:36:55,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417864449] [2021-03-11 00:36:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:36:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:36:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:36:56,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417864449] [2021-03-11 00:36:56,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:36:56,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:36:56,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864688814] [2021-03-11 00:36:56,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:36:56,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:36:56,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:36:56,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:36:56,091 INFO L87 Difference]: Start difference. First operand 3394 states and 11411 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:36:57,461 INFO L93 Difference]: Finished difference Result 4016 states and 13206 transitions. [2021-03-11 00:36:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 00:36:57,461 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:36:57,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:36:57,471 INFO L225 Difference]: With dead ends: 4016 [2021-03-11 00:36:57,472 INFO L226 Difference]: Without dead ends: 3973 [2021-03-11 00:36:57,473 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 867.0ms TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2021-03-11 00:36:57,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2021-03-11 00:36:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3402. [2021-03-11 00:36:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.3610702734489855) internal successors, (11431), 3401 states have internal predecessors, (11431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11431 transitions. [2021-03-11 00:36:57,554 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11431 transitions. Word has length 39 [2021-03-11 00:36:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:36:57,554 INFO L480 AbstractCegarLoop]: Abstraction has 3402 states and 11431 transitions. [2021-03-11 00:36:57,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11431 transitions. [2021-03-11 00:36:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:36:57,561 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:36:57,561 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:36:57,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 00:36:57,561 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:36:57,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:36:57,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1248311834, now seen corresponding path program 9 times [2021-03-11 00:36:57,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:36:57,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557681715] [2021-03-11 00:36:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:36:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:36:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:36:57,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557681715] [2021-03-11 00:36:57,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:36:57,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:36:57,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113452372] [2021-03-11 00:36:57,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:36:57,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:36:57,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:36:57,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:36:57,803 INFO L87 Difference]: Start difference. First operand 3402 states and 11431 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:36:59,155 INFO L93 Difference]: Finished difference Result 4004 states and 13168 transitions. [2021-03-11 00:36:59,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 00:36:59,155 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:36:59,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:36:59,164 INFO L225 Difference]: With dead ends: 4004 [2021-03-11 00:36:59,165 INFO L226 Difference]: Without dead ends: 3952 [2021-03-11 00:36:59,165 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 854.7ms TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 00:36:59,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2021-03-11 00:36:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3396. [2021-03-11 00:36:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3625920471281296) internal successors, (11416), 3395 states have internal predecessors, (11416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:36:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11416 transitions. [2021-03-11 00:36:59,227 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11416 transitions. Word has length 39 [2021-03-11 00:36:59,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:36:59,227 INFO L480 AbstractCegarLoop]: Abstraction has 3396 states and 11416 transitions. [2021-03-11 00:36:59,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:36:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11416 transitions. [2021-03-11 00:36:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:36:59,232 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:36:59,232 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:36:59,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 00:36:59,233 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:36:59,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:36:59,233 INFO L82 PathProgramCache]: Analyzing trace with hash -347573590, now seen corresponding path program 10 times [2021-03-11 00:36:59,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:36:59,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47353812] [2021-03-11 00:36:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:36:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:36:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:36:59,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47353812] [2021-03-11 00:36:59,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:36:59,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:36:59,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079638647] [2021-03-11 00:36:59,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:36:59,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:36:59,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:36:59,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:36:59,428 INFO L87 Difference]: Start difference. First operand 3396 states and 11416 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:00,569 INFO L93 Difference]: Finished difference Result 3977 states and 13079 transitions. [2021-03-11 00:37:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 00:37:00,569 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:00,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:00,578 INFO L225 Difference]: With dead ends: 3977 [2021-03-11 00:37:00,579 INFO L226 Difference]: Without dead ends: 3922 [2021-03-11 00:37:00,579 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 694.9ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:37:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-03-11 00:37:00,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3396. [2021-03-11 00:37:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3620029455081) internal successors, (11414), 3395 states have internal predecessors, (11414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11414 transitions. [2021-03-11 00:37:00,671 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11414 transitions. Word has length 39 [2021-03-11 00:37:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:00,671 INFO L480 AbstractCegarLoop]: Abstraction has 3396 states and 11414 transitions. [2021-03-11 00:37:00,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:00,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11414 transitions. [2021-03-11 00:37:00,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:00,677 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:00,677 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:00,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 00:37:00,678 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:00,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:00,678 INFO L82 PathProgramCache]: Analyzing trace with hash 825078632, now seen corresponding path program 11 times [2021-03-11 00:37:00,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:00,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857600478] [2021-03-11 00:37:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:00,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857600478] [2021-03-11 00:37:00,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:00,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:00,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135500607] [2021-03-11 00:37:00,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:00,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:00,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:00,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:00,899 INFO L87 Difference]: Start difference. First operand 3396 states and 11414 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:01,931 INFO L93 Difference]: Finished difference Result 3912 states and 12927 transitions. [2021-03-11 00:37:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:37:01,932 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:01,941 INFO L225 Difference]: With dead ends: 3912 [2021-03-11 00:37:01,941 INFO L226 Difference]: Without dead ends: 3866 [2021-03-11 00:37:01,942 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 619.4ms TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:37:01,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-03-11 00:37:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3400. [2021-03-11 00:37:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3399 states have (on average 3.360400117681671) internal successors, (11422), 3399 states have internal predecessors, (11422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 11422 transitions. [2021-03-11 00:37:02,017 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 11422 transitions. Word has length 39 [2021-03-11 00:37:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:02,017 INFO L480 AbstractCegarLoop]: Abstraction has 3400 states and 11422 transitions. [2021-03-11 00:37:02,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 11422 transitions. [2021-03-11 00:37:02,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:02,024 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:02,024 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:02,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 00:37:02,024 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:02,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:02,025 INFO L82 PathProgramCache]: Analyzing trace with hash 577612470, now seen corresponding path program 12 times [2021-03-11 00:37:02,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:02,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338281118] [2021-03-11 00:37:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:02,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338281118] [2021-03-11 00:37:02,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:02,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:02,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315688932] [2021-03-11 00:37:02,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:02,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:02,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:02,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:02,253 INFO L87 Difference]: Start difference. First operand 3400 states and 11422 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:03,582 INFO L93 Difference]: Finished difference Result 3963 states and 13072 transitions. [2021-03-11 00:37:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:37:03,583 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:03,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:03,590 INFO L225 Difference]: With dead ends: 3963 [2021-03-11 00:37:03,591 INFO L226 Difference]: Without dead ends: 3899 [2021-03-11 00:37:03,591 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 856.0ms TimeCoverageRelationStatistics Valid=242, Invalid=2208, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 00:37:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2021-03-11 00:37:03,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3450. [2021-03-11 00:37:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 3.358944621629458) internal successors, (11585), 3449 states have internal predecessors, (11585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 11585 transitions. [2021-03-11 00:37:03,660 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 11585 transitions. Word has length 39 [2021-03-11 00:37:03,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:03,660 INFO L480 AbstractCegarLoop]: Abstraction has 3450 states and 11585 transitions. [2021-03-11 00:37:03,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:03,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 11585 transitions. [2021-03-11 00:37:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:03,666 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:03,666 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:03,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 00:37:03,666 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:03,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:03,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2116487992, now seen corresponding path program 13 times [2021-03-11 00:37:03,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:03,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439250886] [2021-03-11 00:37:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:03,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439250886] [2021-03-11 00:37:03,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:03,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:03,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105323588] [2021-03-11 00:37:03,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:03,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:03,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:03,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:03,868 INFO L87 Difference]: Start difference. First operand 3450 states and 11585 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:04,802 INFO L93 Difference]: Finished difference Result 3857 states and 12851 transitions. [2021-03-11 00:37:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 00:37:04,803 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:04,810 INFO L225 Difference]: With dead ends: 3857 [2021-03-11 00:37:04,811 INFO L226 Difference]: Without dead ends: 3790 [2021-03-11 00:37:04,811 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 513.4ms TimeCoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 00:37:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2021-03-11 00:37:04,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3490. [2021-03-11 00:37:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 3.351390083118372) internal successors, (11693), 3489 states have internal predecessors, (11693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 11693 transitions. [2021-03-11 00:37:04,889 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 11693 transitions. Word has length 39 [2021-03-11 00:37:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:04,889 INFO L480 AbstractCegarLoop]: Abstraction has 3490 states and 11693 transitions. [2021-03-11 00:37:04,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 11693 transitions. [2021-03-11 00:37:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:04,896 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:04,896 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:04,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 00:37:04,896 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:04,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:04,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1985893144, now seen corresponding path program 14 times [2021-03-11 00:37:04,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:04,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794901849] [2021-03-11 00:37:04,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:05,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:05,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794901849] [2021-03-11 00:37:05,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:05,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:05,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293680826] [2021-03-11 00:37:05,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:05,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:05,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:05,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:05,107 INFO L87 Difference]: Start difference. First operand 3490 states and 11693 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:06,110 INFO L93 Difference]: Finished difference Result 3845 states and 12811 transitions. [2021-03-11 00:37:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 00:37:06,111 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:06,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:06,118 INFO L225 Difference]: With dead ends: 3845 [2021-03-11 00:37:06,118 INFO L226 Difference]: Without dead ends: 3782 [2021-03-11 00:37:06,119 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 551.6ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 00:37:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-03-11 00:37:06,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3482. [2021-03-11 00:37:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3481 states have (on average 3.3521976443550705) internal successors, (11669), 3481 states have internal predecessors, (11669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 11669 transitions. [2021-03-11 00:37:06,194 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 11669 transitions. Word has length 39 [2021-03-11 00:37:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:06,194 INFO L480 AbstractCegarLoop]: Abstraction has 3482 states and 11669 transitions. [2021-03-11 00:37:06,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 11669 transitions. [2021-03-11 00:37:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:06,200 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:06,200 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:06,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 00:37:06,200 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1455992696, now seen corresponding path program 15 times [2021-03-11 00:37:06,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:06,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552463651] [2021-03-11 00:37:06,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:06,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552463651] [2021-03-11 00:37:06,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:06,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:06,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96049848] [2021-03-11 00:37:06,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:06,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:06,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:06,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:06,421 INFO L87 Difference]: Start difference. First operand 3482 states and 11669 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:07,462 INFO L93 Difference]: Finished difference Result 3869 states and 12871 transitions. [2021-03-11 00:37:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 00:37:07,462 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:07,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:07,470 INFO L225 Difference]: With dead ends: 3869 [2021-03-11 00:37:07,470 INFO L226 Difference]: Without dead ends: 3746 [2021-03-11 00:37:07,470 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 602.4ms TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 00:37:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2021-03-11 00:37:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3450. [2021-03-11 00:37:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 3.3543055958248766) internal successors, (11569), 3449 states have internal predecessors, (11569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 11569 transitions. [2021-03-11 00:37:07,543 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 11569 transitions. Word has length 39 [2021-03-11 00:37:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:07,543 INFO L480 AbstractCegarLoop]: Abstraction has 3450 states and 11569 transitions. [2021-03-11 00:37:07,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:07,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 11569 transitions. [2021-03-11 00:37:07,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:07,550 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:07,550 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:07,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 00:37:07,550 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:07,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:07,551 INFO L82 PathProgramCache]: Analyzing trace with hash 737581526, now seen corresponding path program 16 times [2021-03-11 00:37:07,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:07,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7997667] [2021-03-11 00:37:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:07,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7997667] [2021-03-11 00:37:07,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:07,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:07,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409675270] [2021-03-11 00:37:07,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:07,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:07,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:07,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:07,748 INFO L87 Difference]: Start difference. First operand 3450 states and 11569 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:09,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:09,513 INFO L93 Difference]: Finished difference Result 5674 states and 19244 transitions. [2021-03-11 00:37:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-11 00:37:09,513 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:09,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:09,525 INFO L225 Difference]: With dead ends: 5674 [2021-03-11 00:37:09,525 INFO L226 Difference]: Without dead ends: 5631 [2021-03-11 00:37:09,526 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 1015.1ms TimeCoverageRelationStatistics Valid=309, Invalid=3113, Unknown=0, NotChecked=0, Total=3422 [2021-03-11 00:37:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-03-11 00:37:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 3544. [2021-03-11 00:37:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 3543 states have (on average 3.3519616144510302) internal successors, (11876), 3543 states have internal predecessors, (11876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 11876 transitions. [2021-03-11 00:37:09,614 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 11876 transitions. Word has length 39 [2021-03-11 00:37:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:09,614 INFO L480 AbstractCegarLoop]: Abstraction has 3544 states and 11876 transitions. [2021-03-11 00:37:09,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 11876 transitions. [2021-03-11 00:37:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:09,621 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:09,621 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:09,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 00:37:09,621 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:09,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:09,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1043016776, now seen corresponding path program 17 times [2021-03-11 00:37:09,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:09,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531843686] [2021-03-11 00:37:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:09,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531843686] [2021-03-11 00:37:09,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:09,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:09,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124006115] [2021-03-11 00:37:09,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:09,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:09,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:09,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:09,854 INFO L87 Difference]: Start difference. First operand 3544 states and 11876 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:11,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:11,982 INFO L93 Difference]: Finished difference Result 6535 states and 22174 transitions. [2021-03-11 00:37:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-03-11 00:37:11,982 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:11,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:11,993 INFO L225 Difference]: With dead ends: 6535 [2021-03-11 00:37:11,993 INFO L226 Difference]: Without dead ends: 6483 [2021-03-11 00:37:11,994 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1169.4ms TimeCoverageRelationStatistics Valid=351, Invalid=3809, Unknown=0, NotChecked=0, Total=4160 [2021-03-11 00:37:12,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2021-03-11 00:37:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 3538. [2021-03-11 00:37:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.35340684195646) internal successors, (11861), 3537 states have internal predecessors, (11861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11861 transitions. [2021-03-11 00:37:12,065 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11861 transitions. Word has length 39 [2021-03-11 00:37:12,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:12,066 INFO L480 AbstractCegarLoop]: Abstraction has 3538 states and 11861 transitions. [2021-03-11 00:37:12,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11861 transitions. [2021-03-11 00:37:12,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:12,071 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:12,071 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:12,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 00:37:12,071 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:12,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:12,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1656065096, now seen corresponding path program 18 times [2021-03-11 00:37:12,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:12,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013987410] [2021-03-11 00:37:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:12,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013987410] [2021-03-11 00:37:12,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:12,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:12,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043202708] [2021-03-11 00:37:12,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:12,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:12,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:12,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:12,262 INFO L87 Difference]: Start difference. First operand 3538 states and 11861 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:13,834 INFO L93 Difference]: Finished difference Result 5563 states and 18698 transitions. [2021-03-11 00:37:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 00:37:13,834 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:13,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:13,844 INFO L225 Difference]: With dead ends: 5563 [2021-03-11 00:37:13,845 INFO L226 Difference]: Without dead ends: 5508 [2021-03-11 00:37:13,845 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 807.7ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:37:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-03-11 00:37:13,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3622. [2021-03-11 00:37:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 3.352388842861088) internal successors, (12139), 3621 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12139 transitions. [2021-03-11 00:37:13,928 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12139 transitions. Word has length 39 [2021-03-11 00:37:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:13,928 INFO L480 AbstractCegarLoop]: Abstraction has 3622 states and 12139 transitions. [2021-03-11 00:37:13,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12139 transitions. [2021-03-11 00:37:13,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:13,934 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:13,934 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:13,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 00:37:13,934 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:13,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:13,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1466249978, now seen corresponding path program 19 times [2021-03-11 00:37:13,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:13,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518420892] [2021-03-11 00:37:13,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:14,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518420892] [2021-03-11 00:37:14,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:14,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:14,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468286151] [2021-03-11 00:37:14,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:14,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:14,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:14,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:14,135 INFO L87 Difference]: Start difference. First operand 3622 states and 12139 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:15,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:15,925 INFO L93 Difference]: Finished difference Result 6424 states and 21632 transitions. [2021-03-11 00:37:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-11 00:37:15,925 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:15,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:15,936 INFO L225 Difference]: With dead ends: 6424 [2021-03-11 00:37:15,936 INFO L226 Difference]: Without dead ends: 6364 [2021-03-11 00:37:15,937 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 932.6ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 00:37:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-03-11 00:37:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3620. [2021-03-11 00:37:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3528599060513953) internal successors, (12134), 3619 states have internal predecessors, (12134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12134 transitions. [2021-03-11 00:37:16,017 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12134 transitions. Word has length 39 [2021-03-11 00:37:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:16,017 INFO L480 AbstractCegarLoop]: Abstraction has 3620 states and 12134 transitions. [2021-03-11 00:37:16,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12134 transitions. [2021-03-11 00:37:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:16,021 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:16,021 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:16,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 00:37:16,021 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:16,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:16,021 INFO L82 PathProgramCache]: Analyzing trace with hash 951313716, now seen corresponding path program 20 times [2021-03-11 00:37:16,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:16,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587247175] [2021-03-11 00:37:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:16,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587247175] [2021-03-11 00:37:16,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:16,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:16,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113301998] [2021-03-11 00:37:16,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:16,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:16,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:16,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:16,214 INFO L87 Difference]: Start difference. First operand 3620 states and 12134 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:17,652 INFO L93 Difference]: Finished difference Result 5484 states and 18506 transitions. [2021-03-11 00:37:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 00:37:17,652 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:17,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:17,663 INFO L225 Difference]: With dead ends: 5484 [2021-03-11 00:37:17,663 INFO L226 Difference]: Without dead ends: 5393 [2021-03-11 00:37:17,664 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 695.7ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:37:17,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2021-03-11 00:37:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 3620. [2021-03-11 00:37:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3512019894998617) internal successors, (12128), 3619 states have internal predecessors, (12128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12128 transitions. [2021-03-11 00:37:17,741 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12128 transitions. Word has length 39 [2021-03-11 00:37:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:17,741 INFO L480 AbstractCegarLoop]: Abstraction has 3620 states and 12128 transitions. [2021-03-11 00:37:17,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12128 transitions. [2021-03-11 00:37:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:17,747 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:17,747 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:17,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 00:37:17,747 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:17,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:17,747 INFO L82 PathProgramCache]: Analyzing trace with hash -551168490, now seen corresponding path program 21 times [2021-03-11 00:37:17,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:17,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925227649] [2021-03-11 00:37:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:17,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925227649] [2021-03-11 00:37:17,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:17,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:17,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884343385] [2021-03-11 00:37:17,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:17,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:17,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:17,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:17,943 INFO L87 Difference]: Start difference. First operand 3620 states and 12128 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:19,652 INFO L93 Difference]: Finished difference Result 6297 states and 21308 transitions. [2021-03-11 00:37:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 00:37:19,652 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:19,665 INFO L225 Difference]: With dead ends: 6297 [2021-03-11 00:37:19,665 INFO L226 Difference]: Without dead ends: 6181 [2021-03-11 00:37:19,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 825.4ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:37:19,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2021-03-11 00:37:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 3598. [2021-03-11 00:37:19,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.3525159855435085) internal successors, (12059), 3597 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12059 transitions. [2021-03-11 00:37:19,747 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12059 transitions. Word has length 39 [2021-03-11 00:37:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:19,747 INFO L480 AbstractCegarLoop]: Abstraction has 3598 states and 12059 transitions. [2021-03-11 00:37:19,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12059 transitions. [2021-03-11 00:37:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:19,753 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:19,753 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:19,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 00:37:19,753 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:19,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:19,754 INFO L82 PathProgramCache]: Analyzing trace with hash -17245494, now seen corresponding path program 22 times [2021-03-11 00:37:19,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:19,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15885634] [2021-03-11 00:37:19,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:19,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15885634] [2021-03-11 00:37:19,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:19,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:37:19,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522506137] [2021-03-11 00:37:19,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:37:19,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:19,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:37:19,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:37:19,933 INFO L87 Difference]: Start difference. First operand 3598 states and 12059 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:37:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:20,800 INFO L93 Difference]: Finished difference Result 3859 states and 12840 transitions. [2021-03-11 00:37:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 00:37:20,800 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:37:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:20,806 INFO L225 Difference]: With dead ends: 3859 [2021-03-11 00:37:20,806 INFO L226 Difference]: Without dead ends: 3792 [2021-03-11 00:37:20,807 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 552.9ms TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 00:37:20,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2021-03-11 00:37:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3610. [2021-03-11 00:37:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.3485730119146577) internal successors, (12085), 3609 states have internal predecessors, (12085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12085 transitions. [2021-03-11 00:37:20,856 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12085 transitions. Word has length 39 [2021-03-11 00:37:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:20,856 INFO L480 AbstractCegarLoop]: Abstraction has 3610 states and 12085 transitions. [2021-03-11 00:37:20,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:37:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12085 transitions. [2021-03-11 00:37:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:20,860 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:20,860 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:20,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 00:37:20,861 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:20,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1736861464, now seen corresponding path program 23 times [2021-03-11 00:37:20,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:20,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214765406] [2021-03-11 00:37:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:21,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214765406] [2021-03-11 00:37:21,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:21,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:37:21,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359538330] [2021-03-11 00:37:21,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:37:21,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:21,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:37:21,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:37:21,024 INFO L87 Difference]: Start difference. First operand 3610 states and 12085 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:37:22,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:22,263 INFO L93 Difference]: Finished difference Result 3857 states and 12839 transitions. [2021-03-11 00:37:22,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 00:37:22,263 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:37:22,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:22,271 INFO L225 Difference]: With dead ends: 3857 [2021-03-11 00:37:22,271 INFO L226 Difference]: Without dead ends: 3796 [2021-03-11 00:37:22,272 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 801.7ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 00:37:22,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2021-03-11 00:37:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3598. [2021-03-11 00:37:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.349179872115652) internal successors, (12047), 3597 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-03-11 00:37:22,354 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-03-11 00:37:22,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:22,354 INFO L480 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-03-11 00:37:22,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:37:22,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-03-11 00:37:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:22,360 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:22,360 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:22,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 00:37:22,360 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:22,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash 368691914, now seen corresponding path program 24 times [2021-03-11 00:37:22,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:22,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539641053] [2021-03-11 00:37:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:22,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539641053] [2021-03-11 00:37:22,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:22,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:37:22,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246718860] [2021-03-11 00:37:22,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:37:22,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:22,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:37:22,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:37:22,566 INFO L87 Difference]: Start difference. First operand 3598 states and 12047 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:37:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:23,823 INFO L93 Difference]: Finished difference Result 3911 states and 12982 transitions. [2021-03-11 00:37:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 00:37:23,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:37:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:23,832 INFO L225 Difference]: With dead ends: 3911 [2021-03-11 00:37:23,832 INFO L226 Difference]: Without dead ends: 3781 [2021-03-11 00:37:23,833 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 805.8ms TimeCoverageRelationStatistics Valid=210, Invalid=1860, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:37:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2021-03-11 00:37:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 3574. [2021-03-11 00:37:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.3515253288553035) internal successors, (11975), 3573 states have internal predecessors, (11975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11975 transitions. [2021-03-11 00:37:23,898 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11975 transitions. Word has length 39 [2021-03-11 00:37:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:23,898 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 11975 transitions. [2021-03-11 00:37:23,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:37:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11975 transitions. [2021-03-11 00:37:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:23,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:23,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:23,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 00:37:23,904 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:23,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:23,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2088323530, now seen corresponding path program 25 times [2021-03-11 00:37:23,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:23,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743223604] [2021-03-11 00:37:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:24,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743223604] [2021-03-11 00:37:24,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:24,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:24,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797992030] [2021-03-11 00:37:24,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:24,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:24,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:24,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:24,110 INFO L87 Difference]: Start difference. First operand 3574 states and 11975 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:25,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:25,211 INFO L93 Difference]: Finished difference Result 3867 states and 12844 transitions. [2021-03-11 00:37:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 00:37:25,211 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:25,219 INFO L225 Difference]: With dead ends: 3867 [2021-03-11 00:37:25,219 INFO L226 Difference]: Without dead ends: 3800 [2021-03-11 00:37:25,219 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 713.5ms TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:37:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-03-11 00:37:25,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3574. [2021-03-11 00:37:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.348166806605094) internal successors, (11963), 3573 states have internal predecessors, (11963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11963 transitions. [2021-03-11 00:37:25,283 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11963 transitions. Word has length 39 [2021-03-11 00:37:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:25,283 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 11963 transitions. [2021-03-11 00:37:25,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11963 transitions. [2021-03-11 00:37:25,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:25,289 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:25,289 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:25,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 00:37:25,289 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:25,289 INFO L82 PathProgramCache]: Analyzing trace with hash 487027796, now seen corresponding path program 26 times [2021-03-11 00:37:25,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:25,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844499679] [2021-03-11 00:37:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:25,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844499679] [2021-03-11 00:37:25,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:25,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:25,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519417207] [2021-03-11 00:37:25,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:25,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:25,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:25,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:25,504 INFO L87 Difference]: Start difference. First operand 3574 states and 11963 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:26,773 INFO L93 Difference]: Finished difference Result 3904 states and 12922 transitions. [2021-03-11 00:37:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:37:26,774 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:26,782 INFO L225 Difference]: With dead ends: 3904 [2021-03-11 00:37:26,782 INFO L226 Difference]: Without dead ends: 3843 [2021-03-11 00:37:26,782 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 867.3ms TimeCoverageRelationStatistics Valid=249, Invalid=2201, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 00:37:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2021-03-11 00:37:26,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3562. [2021-03-11 00:37:26,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3510249929795) internal successors, (11933), 3561 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-03-11 00:37:26,847 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-03-11 00:37:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:26,847 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-03-11 00:37:26,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-03-11 00:37:26,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:26,853 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:26,853 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:26,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 00:37:26,853 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:26,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:26,853 INFO L82 PathProgramCache]: Analyzing trace with hash -673136106, now seen corresponding path program 27 times [2021-03-11 00:37:26,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:26,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851492221] [2021-03-11 00:37:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:27,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851492221] [2021-03-11 00:37:27,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:27,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:27,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497571684] [2021-03-11 00:37:27,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:27,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:27,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:27,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:27,074 INFO L87 Difference]: Start difference. First operand 3562 states and 11933 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:28,053 INFO L93 Difference]: Finished difference Result 3819 states and 12706 transitions. [2021-03-11 00:37:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 00:37:28,054 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:28,060 INFO L225 Difference]: With dead ends: 3819 [2021-03-11 00:37:28,060 INFO L226 Difference]: Without dead ends: 3752 [2021-03-11 00:37:28,060 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 628.9ms TimeCoverageRelationStatistics Valid=176, Invalid=1546, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 00:37:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-03-11 00:37:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3570. [2021-03-11 00:37:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 3.347996637713645) internal successors, (11949), 3569 states have internal predecessors, (11949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 11949 transitions. [2021-03-11 00:37:28,103 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 11949 transitions. Word has length 39 [2021-03-11 00:37:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:28,103 INFO L480 AbstractCegarLoop]: Abstraction has 3570 states and 11949 transitions. [2021-03-11 00:37:28,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 11949 transitions. [2021-03-11 00:37:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:28,107 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:28,107 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:28,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 00:37:28,108 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:28,108 INFO L82 PathProgramCache]: Analyzing trace with hash -803730954, now seen corresponding path program 28 times [2021-03-11 00:37:28,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:28,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190804680] [2021-03-11 00:37:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:28,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190804680] [2021-03-11 00:37:28,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:28,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:28,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083229248] [2021-03-11 00:37:28,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:28,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:28,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:28,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:28,317 INFO L87 Difference]: Start difference. First operand 3570 states and 11949 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:29,383 INFO L93 Difference]: Finished difference Result 3807 states and 12666 transitions. [2021-03-11 00:37:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 00:37:29,383 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:29,389 INFO L225 Difference]: With dead ends: 3807 [2021-03-11 00:37:29,389 INFO L226 Difference]: Without dead ends: 3744 [2021-03-11 00:37:29,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 656.9ms TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:37:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2021-03-11 00:37:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3562. [2021-03-11 00:37:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.349901713001966) internal successors, (11929), 3561 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11929 transitions. [2021-03-11 00:37:29,438 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11929 transitions. Word has length 39 [2021-03-11 00:37:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:29,438 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11929 transitions. [2021-03-11 00:37:29,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:29,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11929 transitions. [2021-03-11 00:37:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:29,442 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:29,442 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:29,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 00:37:29,442 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:29,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:29,443 INFO L82 PathProgramCache]: Analyzing trace with hash -939409546, now seen corresponding path program 29 times [2021-03-11 00:37:29,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:29,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303307732] [2021-03-11 00:37:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:29,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303307732] [2021-03-11 00:37:29,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:29,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:29,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179821674] [2021-03-11 00:37:29,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:29,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:29,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:29,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:29,630 INFO L87 Difference]: Start difference. First operand 3562 states and 11929 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:31,126 INFO L93 Difference]: Finished difference Result 3914 states and 12924 transitions. [2021-03-11 00:37:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 00:37:31,127 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:31,135 INFO L225 Difference]: With dead ends: 3914 [2021-03-11 00:37:31,135 INFO L226 Difference]: Without dead ends: 3865 [2021-03-11 00:37:31,135 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 962.0ms TimeCoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 00:37:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-03-11 00:37:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3556. [2021-03-11 00:37:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.351336146272855) internal successors, (11914), 3555 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11914 transitions. [2021-03-11 00:37:31,203 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11914 transitions. Word has length 39 [2021-03-11 00:37:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:31,203 INFO L480 AbstractCegarLoop]: Abstraction has 3556 states and 11914 transitions. [2021-03-11 00:37:31,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11914 transitions. [2021-03-11 00:37:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:31,209 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:31,209 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:31,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 00:37:31,209 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:31,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:31,209 INFO L82 PathProgramCache]: Analyzing trace with hash -20925976, now seen corresponding path program 30 times [2021-03-11 00:37:31,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:31,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866154800] [2021-03-11 00:37:31,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:31,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866154800] [2021-03-11 00:37:31,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:31,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:31,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402884652] [2021-03-11 00:37:31,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:31,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:31,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:31,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:31,430 INFO L87 Difference]: Start difference. First operand 3556 states and 11914 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:32,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:32,593 INFO L93 Difference]: Finished difference Result 3841 states and 12736 transitions. [2021-03-11 00:37:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:37:32,593 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:32,599 INFO L225 Difference]: With dead ends: 3841 [2021-03-11 00:37:32,600 INFO L226 Difference]: Without dead ends: 3786 [2021-03-11 00:37:32,600 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 760.2ms TimeCoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:37:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-03-11 00:37:32,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3556. [2021-03-11 00:37:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.350773558368495) internal successors, (11912), 3555 states have internal predecessors, (11912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11912 transitions. [2021-03-11 00:37:32,647 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11912 transitions. Word has length 39 [2021-03-11 00:37:32,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:32,647 INFO L480 AbstractCegarLoop]: Abstraction has 3556 states and 11912 transitions. [2021-03-11 00:37:32,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11912 transitions. [2021-03-11 00:37:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:32,652 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:32,652 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:32,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 00:37:32,652 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:32,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:32,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1151726246, now seen corresponding path program 31 times [2021-03-11 00:37:32,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:32,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442535102] [2021-03-11 00:37:32,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:32,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442535102] [2021-03-11 00:37:32,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:32,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:32,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036686061] [2021-03-11 00:37:32,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:32,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:32,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:32,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:32,833 INFO L87 Difference]: Start difference. First operand 3556 states and 11912 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:33,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:33,831 INFO L93 Difference]: Finished difference Result 3784 states and 12604 transitions. [2021-03-11 00:37:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 00:37:33,831 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:33,839 INFO L225 Difference]: With dead ends: 3784 [2021-03-11 00:37:33,840 INFO L226 Difference]: Without dead ends: 3728 [2021-03-11 00:37:33,840 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 635.9ms TimeCoverageRelationStatistics Valid=180, Invalid=1542, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 00:37:33,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-03-11 00:37:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3546. [2021-03-11 00:37:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 3545 states have (on average 3.3543018335684063) internal successors, (11891), 3545 states have internal predecessors, (11891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 11891 transitions. [2021-03-11 00:37:33,914 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 11891 transitions. Word has length 39 [2021-03-11 00:37:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:33,914 INFO L480 AbstractCegarLoop]: Abstraction has 3546 states and 11891 transitions. [2021-03-11 00:37:33,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 11891 transitions. [2021-03-11 00:37:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:33,919 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:33,920 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:33,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 00:37:33,920 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:33,920 INFO L82 PathProgramCache]: Analyzing trace with hash -901192728, now seen corresponding path program 32 times [2021-03-11 00:37:33,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:33,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539374718] [2021-03-11 00:37:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:34,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539374718] [2021-03-11 00:37:34,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:34,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:34,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506162852] [2021-03-11 00:37:34,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:34,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:34,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:34,149 INFO L87 Difference]: Start difference. First operand 3546 states and 11891 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:35,706 INFO L93 Difference]: Finished difference Result 3995 states and 13156 transitions. [2021-03-11 00:37:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 00:37:35,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:35,714 INFO L225 Difference]: With dead ends: 3995 [2021-03-11 00:37:35,714 INFO L226 Difference]: Without dead ends: 3858 [2021-03-11 00:37:35,714 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 1008.7ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:37:35,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-03-11 00:37:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3550. [2021-03-11 00:37:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.353338968723584) internal successors, (11901), 3549 states have internal predecessors, (11901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11901 transitions. [2021-03-11 00:37:35,779 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11901 transitions. Word has length 39 [2021-03-11 00:37:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:35,780 INFO L480 AbstractCegarLoop]: Abstraction has 3550 states and 11901 transitions. [2021-03-11 00:37:35,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11901 transitions. [2021-03-11 00:37:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:35,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:35,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:35,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 00:37:35,785 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:35,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:35,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1898883668, now seen corresponding path program 33 times [2021-03-11 00:37:35,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:35,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738079352] [2021-03-11 00:37:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:36,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738079352] [2021-03-11 00:37:36,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:36,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:36,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790117398] [2021-03-11 00:37:36,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:36,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:36,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:36,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:36,015 INFO L87 Difference]: Start difference. First operand 3550 states and 11901 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:37,408 INFO L93 Difference]: Finished difference Result 4033 states and 13226 transitions. [2021-03-11 00:37:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 00:37:37,408 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:37,415 INFO L225 Difference]: With dead ends: 4033 [2021-03-11 00:37:37,415 INFO L226 Difference]: Without dead ends: 3969 [2021-03-11 00:37:37,415 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 931.6ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 00:37:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2021-03-11 00:37:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3550. [2021-03-11 00:37:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.353338968723584) internal successors, (11901), 3549 states have internal predecessors, (11901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11901 transitions. [2021-03-11 00:37:37,460 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11901 transitions. Word has length 39 [2021-03-11 00:37:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:37,460 INFO L480 AbstractCegarLoop]: Abstraction has 3550 states and 11901 transitions. [2021-03-11 00:37:37,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11901 transitions. [2021-03-11 00:37:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:37,464 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:37,464 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:37,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 00:37:37,464 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:37,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:37,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1477600058, now seen corresponding path program 34 times [2021-03-11 00:37:37,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:37,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849559769] [2021-03-11 00:37:37,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:37,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849559769] [2021-03-11 00:37:37,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:37,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:37,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71830937] [2021-03-11 00:37:37,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:37,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:37,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:37,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:37,675 INFO L87 Difference]: Start difference. First operand 3550 states and 11901 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:38,886 INFO L93 Difference]: Finished difference Result 3938 states and 12974 transitions. [2021-03-11 00:37:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 00:37:38,887 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:38,895 INFO L225 Difference]: With dead ends: 3938 [2021-03-11 00:37:38,895 INFO L226 Difference]: Without dead ends: 3883 [2021-03-11 00:37:38,895 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 757.1ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:37:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2021-03-11 00:37:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3552. [2021-03-11 00:37:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3551 states have (on average 3.3522951281329205) internal successors, (11904), 3551 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 11904 transitions. [2021-03-11 00:37:38,961 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 11904 transitions. Word has length 39 [2021-03-11 00:37:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:38,961 INFO L480 AbstractCegarLoop]: Abstraction has 3552 states and 11904 transitions. [2021-03-11 00:37:38,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 11904 transitions. [2021-03-11 00:37:38,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:38,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:38,967 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:38,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 00:37:38,967 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:38,968 INFO L82 PathProgramCache]: Analyzing trace with hash -304947836, now seen corresponding path program 35 times [2021-03-11 00:37:38,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:38,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827938437] [2021-03-11 00:37:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:39,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827938437] [2021-03-11 00:37:39,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:39,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:39,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095055841] [2021-03-11 00:37:39,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:39,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:39,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:39,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:39,192 INFO L87 Difference]: Start difference. First operand 3552 states and 11904 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:40,365 INFO L93 Difference]: Finished difference Result 3908 states and 12913 transitions. [2021-03-11 00:37:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:37:40,366 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:40,372 INFO L225 Difference]: With dead ends: 3908 [2021-03-11 00:37:40,372 INFO L226 Difference]: Without dead ends: 3848 [2021-03-11 00:37:40,373 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 754.2ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:37:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2021-03-11 00:37:40,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 3550. [2021-03-11 00:37:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.352775429698507) internal successors, (11899), 3549 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-03-11 00:37:40,423 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-03-11 00:37:40,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:40,423 INFO L480 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-03-11 00:37:40,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-03-11 00:37:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:40,427 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:40,427 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:40,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 00:37:40,428 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:40,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:40,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1910452918, now seen corresponding path program 36 times [2021-03-11 00:37:40,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:40,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679534961] [2021-03-11 00:37:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:40,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679534961] [2021-03-11 00:37:40,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:40,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:37:40,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394480921] [2021-03-11 00:37:40,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:37:40,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:40,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:37:40,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:37:40,604 INFO L87 Difference]: Start difference. First operand 3550 states and 11899 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:37:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:41,598 INFO L93 Difference]: Finished difference Result 3819 states and 12700 transitions. [2021-03-11 00:37:41,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 00:37:41,598 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:37:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:41,606 INFO L225 Difference]: With dead ends: 3819 [2021-03-11 00:37:41,606 INFO L226 Difference]: Without dead ends: 3743 [2021-03-11 00:37:41,607 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 624.9ms TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 00:37:41,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-03-11 00:37:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3558. [2021-03-11 00:37:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3557 states have (on average 3.3497329210008435) internal successors, (11915), 3557 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 11915 transitions. [2021-03-11 00:37:41,673 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 11915 transitions. Word has length 39 [2021-03-11 00:37:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:41,673 INFO L480 AbstractCegarLoop]: Abstraction has 3558 states and 11915 transitions. [2021-03-11 00:37:41,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:37:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 11915 transitions. [2021-03-11 00:37:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:41,679 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:41,679 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:41,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 00:37:41,679 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:41,679 INFO L82 PathProgramCache]: Analyzing trace with hash 892399306, now seen corresponding path program 37 times [2021-03-11 00:37:41,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:41,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758446216] [2021-03-11 00:37:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:41,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758446216] [2021-03-11 00:37:41,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:41,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:41,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189055133] [2021-03-11 00:37:41,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:41,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:41,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:41,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:41,922 INFO L87 Difference]: Start difference. First operand 3558 states and 11915 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:43,009 INFO L93 Difference]: Finished difference Result 3801 states and 12646 transitions. [2021-03-11 00:37:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 00:37:43,010 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:43,018 INFO L225 Difference]: With dead ends: 3801 [2021-03-11 00:37:43,018 INFO L226 Difference]: Without dead ends: 3723 [2021-03-11 00:37:43,018 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 714.9ms TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:37:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2021-03-11 00:37:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3538. [2021-03-11 00:37:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.3551031947978514) internal successors, (11867), 3537 states have internal predecessors, (11867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11867 transitions. [2021-03-11 00:37:43,082 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11867 transitions. Word has length 39 [2021-03-11 00:37:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:43,082 INFO L480 AbstractCegarLoop]: Abstraction has 3538 states and 11867 transitions. [2021-03-11 00:37:43,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11867 transitions. [2021-03-11 00:37:43,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:43,088 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:43,088 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:43,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 00:37:43,089 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:43,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1082064394, now seen corresponding path program 38 times [2021-03-11 00:37:43,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:43,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343890246] [2021-03-11 00:37:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:43,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343890246] [2021-03-11 00:37:43,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:43,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:43,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867483761] [2021-03-11 00:37:43,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:43,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:43,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:43,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:43,328 INFO L87 Difference]: Start difference. First operand 3538 states and 11867 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:44,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:44,874 INFO L93 Difference]: Finished difference Result 3974 states and 13117 transitions. [2021-03-11 00:37:44,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 00:37:44,875 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:44,883 INFO L225 Difference]: With dead ends: 3974 [2021-03-11 00:37:44,883 INFO L226 Difference]: Without dead ends: 3868 [2021-03-11 00:37:44,884 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 981.4ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:37:44,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-03-11 00:37:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3554. [2021-03-11 00:37:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3546298902336056) internal successors, (11919), 3553 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-03-11 00:37:44,948 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-03-11 00:37:44,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:44,948 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-03-11 00:37:44,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:44,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-03-11 00:37:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:44,953 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:44,953 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:44,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 00:37:44,954 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:44,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:44,954 INFO L82 PathProgramCache]: Analyzing trace with hash -412826506, now seen corresponding path program 39 times [2021-03-11 00:37:44,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:44,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658956526] [2021-03-11 00:37:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:45,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658956526] [2021-03-11 00:37:45,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:45,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:45,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280569295] [2021-03-11 00:37:45,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:45,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:45,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:45,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:45,175 INFO L87 Difference]: Start difference. First operand 3554 states and 11919 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:46,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:46,583 INFO L93 Difference]: Finished difference Result 4043 states and 13251 transitions. [2021-03-11 00:37:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 00:37:46,584 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:46,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:46,590 INFO L225 Difference]: With dead ends: 4043 [2021-03-11 00:37:46,590 INFO L226 Difference]: Without dead ends: 3979 [2021-03-11 00:37:46,590 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 912.3ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:37:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-03-11 00:37:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3554. [2021-03-11 00:37:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3546298902336056) internal successors, (11919), 3553 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-03-11 00:37:46,637 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-03-11 00:37:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:46,637 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-03-11 00:37:46,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-03-11 00:37:46,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:46,641 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:46,641 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:46,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 00:37:46,641 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:46,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:46,641 INFO L82 PathProgramCache]: Analyzing trace with hash 505657064, now seen corresponding path program 40 times [2021-03-11 00:37:46,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:46,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403061398] [2021-03-11 00:37:46,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:46,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403061398] [2021-03-11 00:37:46,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:46,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:46,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512728020] [2021-03-11 00:37:46,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:46,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:46,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:46,862 INFO L87 Difference]: Start difference. First operand 3554 states and 11919 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:48,040 INFO L93 Difference]: Finished difference Result 3940 states and 12979 transitions. [2021-03-11 00:37:48,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 00:37:48,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:48,048 INFO L225 Difference]: With dead ends: 3940 [2021-03-11 00:37:48,048 INFO L226 Difference]: Without dead ends: 3897 [2021-03-11 00:37:48,049 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 722.1ms TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 00:37:48,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-03-11 00:37:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3560. [2021-03-11 00:37:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.352627142455746) internal successors, (11932), 3559 states have internal predecessors, (11932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11932 transitions. [2021-03-11 00:37:48,113 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11932 transitions. Word has length 39 [2021-03-11 00:37:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:48,113 INFO L480 AbstractCegarLoop]: Abstraction has 3560 states and 11932 transitions. [2021-03-11 00:37:48,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11932 transitions. [2021-03-11 00:37:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:48,118 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:48,118 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:48,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 00:37:48,119 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:48,119 INFO L82 PathProgramCache]: Analyzing trace with hash 525805798, now seen corresponding path program 41 times [2021-03-11 00:37:48,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:48,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215839321] [2021-03-11 00:37:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:48,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215839321] [2021-03-11 00:37:48,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:48,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:48,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148650317] [2021-03-11 00:37:48,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:48,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:48,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:48,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:48,350 INFO L87 Difference]: Start difference. First operand 3560 states and 11932 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:49,566 INFO L93 Difference]: Finished difference Result 3897 states and 12878 transitions. [2021-03-11 00:37:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:37:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:49,573 INFO L225 Difference]: With dead ends: 3897 [2021-03-11 00:37:49,573 INFO L226 Difference]: Without dead ends: 3854 [2021-03-11 00:37:49,574 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 763.7ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:37:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-03-11 00:37:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3556. [2021-03-11 00:37:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.353586497890295) internal successors, (11922), 3555 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11922 transitions. [2021-03-11 00:37:49,631 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11922 transitions. Word has length 39 [2021-03-11 00:37:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:49,631 INFO L480 AbstractCegarLoop]: Abstraction has 3556 states and 11922 transitions. [2021-03-11 00:37:49,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11922 transitions. [2021-03-11 00:37:49,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:49,636 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:49,636 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:49,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 00:37:49,636 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:49,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:49,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1678309286, now seen corresponding path program 42 times [2021-03-11 00:37:49,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:49,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672916402] [2021-03-11 00:37:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:49,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672916402] [2021-03-11 00:37:49,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:49,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:49,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347639650] [2021-03-11 00:37:49,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:49,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:49,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:49,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:49,834 INFO L87 Difference]: Start difference. First operand 3556 states and 11922 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:51,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:51,011 INFO L93 Difference]: Finished difference Result 3918 states and 12938 transitions. [2021-03-11 00:37:51,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:37:51,011 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:51,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:51,017 INFO L225 Difference]: With dead ends: 3918 [2021-03-11 00:37:51,018 INFO L226 Difference]: Without dead ends: 3858 [2021-03-11 00:37:51,018 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 722.3ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:37:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-03-11 00:37:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3554. [2021-03-11 00:37:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.354066985645933) internal successors, (11917), 3553 states have internal predecessors, (11917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11917 transitions. [2021-03-11 00:37:51,069 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11917 transitions. Word has length 39 [2021-03-11 00:37:51,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:51,070 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11917 transitions. [2021-03-11 00:37:51,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11917 transitions. [2021-03-11 00:37:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:51,074 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:51,074 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:51,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 00:37:51,074 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:51,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:51,074 INFO L82 PathProgramCache]: Analyzing trace with hash -401257256, now seen corresponding path program 43 times [2021-03-11 00:37:51,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:51,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846285423] [2021-03-11 00:37:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:51,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846285423] [2021-03-11 00:37:51,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:51,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:37:51,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505937072] [2021-03-11 00:37:51,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:37:51,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:51,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:37:51,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:37:51,244 INFO L87 Difference]: Start difference. First operand 3554 states and 11917 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:37:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:52,134 INFO L93 Difference]: Finished difference Result 3886 states and 12878 transitions. [2021-03-11 00:37:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 00:37:52,134 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:37:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:52,142 INFO L225 Difference]: With dead ends: 3886 [2021-03-11 00:37:52,142 INFO L226 Difference]: Without dead ends: 3810 [2021-03-11 00:37:52,143 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 542.4ms TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 00:37:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-03-11 00:37:52,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3562. [2021-03-11 00:37:52,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3510249929795) internal successors, (11933), 3561 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-03-11 00:37:52,202 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-03-11 00:37:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:52,202 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-03-11 00:37:52,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:37:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-03-11 00:37:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:52,208 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:52,208 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:52,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 00:37:52,208 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:52,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1419310868, now seen corresponding path program 44 times [2021-03-11 00:37:52,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:52,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763472643] [2021-03-11 00:37:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:52,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763472643] [2021-03-11 00:37:52,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:52,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:52,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058208870] [2021-03-11 00:37:52,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:52,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:52,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:52,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:52,499 INFO L87 Difference]: Start difference. First operand 3562 states and 11933 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:53,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:53,702 INFO L93 Difference]: Finished difference Result 3868 states and 12824 transitions. [2021-03-11 00:37:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 00:37:53,702 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:53,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:53,710 INFO L225 Difference]: With dead ends: 3868 [2021-03-11 00:37:53,710 INFO L226 Difference]: Without dead ends: 3798 [2021-03-11 00:37:53,711 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 807.2ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 00:37:53,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2021-03-11 00:37:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3550. [2021-03-11 00:37:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.354466046773739) internal successors, (11905), 3549 states have internal predecessors, (11905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11905 transitions. [2021-03-11 00:37:53,779 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11905 transitions. Word has length 39 [2021-03-11 00:37:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:53,779 INFO L480 AbstractCegarLoop]: Abstraction has 3550 states and 11905 transitions. [2021-03-11 00:37:53,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11905 transitions. [2021-03-11 00:37:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:53,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:53,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:53,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 00:37:53,785 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:53,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:53,785 INFO L82 PathProgramCache]: Analyzing trace with hash -573127188, now seen corresponding path program 45 times [2021-03-11 00:37:53,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:53,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976790807] [2021-03-11 00:37:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:54,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976790807] [2021-03-11 00:37:54,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:54,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:54,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726378865] [2021-03-11 00:37:54,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:54,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:54,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:54,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:54,031 INFO L87 Difference]: Start difference. First operand 3550 states and 11905 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:55,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:55,987 INFO L93 Difference]: Finished difference Result 5576 states and 18929 transitions. [2021-03-11 00:37:55,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-11 00:37:55,988 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:55,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:55,999 INFO L225 Difference]: With dead ends: 5576 [2021-03-11 00:37:55,999 INFO L226 Difference]: Without dead ends: 5533 [2021-03-11 00:37:56,000 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1132.1ms TimeCoverageRelationStatistics Valid=302, Invalid=3004, Unknown=0, NotChecked=0, Total=3306 [2021-03-11 00:37:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2021-03-11 00:37:56,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 3576. [2021-03-11 00:37:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3576 states, 3575 states have (on average 3.3532867132867135) internal successors, (11988), 3575 states have internal predecessors, (11988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 11988 transitions. [2021-03-11 00:37:56,102 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 11988 transitions. Word has length 39 [2021-03-11 00:37:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:56,102 INFO L480 AbstractCegarLoop]: Abstraction has 3576 states and 11988 transitions. [2021-03-11 00:37:56,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 11988 transitions. [2021-03-11 00:37:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:56,108 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:56,108 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:56,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 00:37:56,108 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:56,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:56,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1941241806, now seen corresponding path program 46 times [2021-03-11 00:37:56,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:56,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840005083] [2021-03-11 00:37:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:56,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840005083] [2021-03-11 00:37:56,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:56,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:56,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259661078] [2021-03-11 00:37:56,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:56,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:56,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:56,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:56,340 INFO L87 Difference]: Start difference. First operand 3576 states and 11988 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:58,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:37:58,656 INFO L93 Difference]: Finished difference Result 6437 states and 21859 transitions. [2021-03-11 00:37:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-11 00:37:58,656 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:37:58,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:37:58,666 INFO L225 Difference]: With dead ends: 6437 [2021-03-11 00:37:58,666 INFO L226 Difference]: Without dead ends: 6385 [2021-03-11 00:37:58,667 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1282.3ms TimeCoverageRelationStatistics Valid=344, Invalid=3688, Unknown=0, NotChecked=0, Total=4032 [2021-03-11 00:37:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2021-03-11 00:37:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 3562. [2021-03-11 00:37:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3549564729008705) internal successors, (11947), 3561 states have internal predecessors, (11947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:37:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11947 transitions. [2021-03-11 00:37:58,722 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11947 transitions. Word has length 39 [2021-03-11 00:37:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:37:58,722 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11947 transitions. [2021-03-11 00:37:58,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:37:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11947 transitions. [2021-03-11 00:37:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:37:58,726 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:37:58,726 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:37:58,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 00:37:58,726 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:37:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:37:58,727 INFO L82 PathProgramCache]: Analyzing trace with hash 345356382, now seen corresponding path program 47 times [2021-03-11 00:37:58,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:37:58,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030621962] [2021-03-11 00:37:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:37:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:37:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:37:58,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030621962] [2021-03-11 00:37:58,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:37:58,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:37:58,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257379072] [2021-03-11 00:37:58,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:37:58,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:37:58,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:37:58,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:37:58,950 INFO L87 Difference]: Start difference. First operand 3562 states and 11947 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:00,716 INFO L93 Difference]: Finished difference Result 5393 states and 18145 transitions. [2021-03-11 00:38:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 00:38:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:38:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:00,728 INFO L225 Difference]: With dead ends: 5393 [2021-03-11 00:38:00,728 INFO L226 Difference]: Without dead ends: 5338 [2021-03-11 00:38:00,729 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 915.3ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 00:38:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2021-03-11 00:38:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 3582. [2021-03-11 00:38:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3546495392348508) internal successors, (12013), 3581 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12013 transitions. [2021-03-11 00:38:00,806 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12013 transitions. Word has length 39 [2021-03-11 00:38:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:00,806 INFO L480 AbstractCegarLoop]: Abstraction has 3582 states and 12013 transitions. [2021-03-11 00:38:00,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12013 transitions. [2021-03-11 00:38:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:00,812 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:00,812 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:00,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 00:38:00,812 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:00,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:00,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1518008604, now seen corresponding path program 48 times [2021-03-11 00:38:00,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:00,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49037605] [2021-03-11 00:38:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:01,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49037605] [2021-03-11 00:38:01,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:01,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:38:01,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505043826] [2021-03-11 00:38:01,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:38:01,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:01,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:38:01,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:38:01,044 INFO L87 Difference]: Start difference. First operand 3582 states and 12013 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:03,001 INFO L93 Difference]: Finished difference Result 6254 states and 21079 transitions. [2021-03-11 00:38:03,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-11 00:38:03,002 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:38:03,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:03,017 INFO L225 Difference]: With dead ends: 6254 [2021-03-11 00:38:03,017 INFO L226 Difference]: Without dead ends: 6194 [2021-03-11 00:38:03,018 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1097.7ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-03-11 00:38:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2021-03-11 00:38:03,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 3580. [2021-03-11 00:38:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 3.355127130483375) internal successors, (12008), 3579 states have internal predecessors, (12008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12008 transitions. [2021-03-11 00:38:03,104 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12008 transitions. Word has length 39 [2021-03-11 00:38:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:03,104 INFO L480 AbstractCegarLoop]: Abstraction has 3580 states and 12008 transitions. [2021-03-11 00:38:03,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12008 transitions. [2021-03-11 00:38:03,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:03,109 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:03,110 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:03,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 00:38:03,110 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:03,110 INFO L82 PathProgramCache]: Analyzing trace with hash -359394998, now seen corresponding path program 49 times [2021-03-11 00:38:03,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:03,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868150650] [2021-03-11 00:38:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:03,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868150650] [2021-03-11 00:38:03,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:03,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:38:03,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258145233] [2021-03-11 00:38:03,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:38:03,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:03,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:38:03,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:38:03,367 INFO L87 Difference]: Start difference. First operand 3580 states and 12008 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:04,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:04,762 INFO L93 Difference]: Finished difference Result 5284 states and 17876 transitions. [2021-03-11 00:38:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 00:38:04,763 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:38:04,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:04,772 INFO L225 Difference]: With dead ends: 5284 [2021-03-11 00:38:04,772 INFO L226 Difference]: Without dead ends: 5193 [2021-03-11 00:38:04,772 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 740.6ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:38:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-03-11 00:38:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 3580. [2021-03-11 00:38:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 3.353450684548757) internal successors, (12002), 3579 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12002 transitions. [2021-03-11 00:38:04,837 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12002 transitions. Word has length 39 [2021-03-11 00:38:04,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:04,837 INFO L480 AbstractCegarLoop]: Abstraction has 3580 states and 12002 transitions. [2021-03-11 00:38:04,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12002 transitions. [2021-03-11 00:38:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:04,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:04,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:04,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 00:38:04,842 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:04,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:04,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1861877204, now seen corresponding path program 50 times [2021-03-11 00:38:04,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:04,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232888492] [2021-03-11 00:38:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:05,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232888492] [2021-03-11 00:38:05,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:05,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:38:05,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251470254] [2021-03-11 00:38:05,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:38:05,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:05,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:38:05,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:38:05,045 INFO L87 Difference]: Start difference. First operand 3580 states and 12002 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:06,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:06,952 INFO L93 Difference]: Finished difference Result 6116 states and 20752 transitions. [2021-03-11 00:38:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 00:38:06,953 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:38:06,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:06,963 INFO L225 Difference]: With dead ends: 6116 [2021-03-11 00:38:06,963 INFO L226 Difference]: Without dead ends: 6016 [2021-03-11 00:38:06,963 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 935.0ms TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:38:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2021-03-11 00:38:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 3574. [2021-03-11 00:38:07,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.352085082563672) internal successors, (11977), 3573 states have internal predecessors, (11977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11977 transitions. [2021-03-11 00:38:07,040 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11977 transitions. Word has length 39 [2021-03-11 00:38:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:07,040 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 11977 transitions. [2021-03-11 00:38:07,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11977 transitions. [2021-03-11 00:38:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:07,045 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:07,045 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:07,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 00:38:07,045 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:07,045 INFO L82 PathProgramCache]: Analyzing trace with hash -2098502200, now seen corresponding path program 51 times [2021-03-11 00:38:07,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:07,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534087713] [2021-03-11 00:38:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:07,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534087713] [2021-03-11 00:38:07,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:07,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:38:07,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556864303] [2021-03-11 00:38:07,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:38:07,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:07,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:38:07,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:38:07,236 INFO L87 Difference]: Start difference. First operand 3574 states and 11977 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:38:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:08,156 INFO L93 Difference]: Finished difference Result 3841 states and 12759 transitions. [2021-03-11 00:38:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-11 00:38:08,157 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:38:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:08,165 INFO L225 Difference]: With dead ends: 3841 [2021-03-11 00:38:08,165 INFO L226 Difference]: Without dead ends: 3765 [2021-03-11 00:38:08,165 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 556.1ms TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 00:38:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2021-03-11 00:38:08,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3606. [2021-03-11 00:38:08,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.3467406380027738) internal successors, (12065), 3605 states have internal predecessors, (12065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12065 transitions. [2021-03-11 00:38:08,230 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12065 transitions. Word has length 39 [2021-03-11 00:38:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:08,230 INFO L480 AbstractCegarLoop]: Abstraction has 3606 states and 12065 transitions. [2021-03-11 00:38:08,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:38:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12065 transitions. [2021-03-11 00:38:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:08,236 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:08,236 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:08,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 00:38:08,236 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:08,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:08,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1178411484, now seen corresponding path program 52 times [2021-03-11 00:38:08,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:08,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318927670] [2021-03-11 00:38:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:08,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318927670] [2021-03-11 00:38:08,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:08,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:38:08,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873922302] [2021-03-11 00:38:08,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:38:08,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:08,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:38:08,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:38:08,494 INFO L87 Difference]: Start difference. First operand 3606 states and 12065 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:09,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:09,686 INFO L93 Difference]: Finished difference Result 3823 states and 12705 transitions. [2021-03-11 00:38:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 00:38:09,686 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:38:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:09,693 INFO L225 Difference]: With dead ends: 3823 [2021-03-11 00:38:09,694 INFO L226 Difference]: Without dead ends: 3757 [2021-03-11 00:38:09,694 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 744.8ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 00:38:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2021-03-11 00:38:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3598. [2021-03-11 00:38:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.347511815401724) internal successors, (12041), 3597 states have internal predecessors, (12041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12041 transitions. [2021-03-11 00:38:09,755 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12041 transitions. Word has length 39 [2021-03-11 00:38:09,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:09,755 INFO L480 AbstractCegarLoop]: Abstraction has 3598 states and 12041 transitions. [2021-03-11 00:38:09,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12041 transitions. [2021-03-11 00:38:09,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:09,760 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:09,760 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:09,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-11 00:38:09,761 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:09,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:09,761 INFO L82 PathProgramCache]: Analyzing trace with hash 896145830, now seen corresponding path program 53 times [2021-03-11 00:38:09,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:09,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934584618] [2021-03-11 00:38:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:09,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934584618] [2021-03-11 00:38:09,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:09,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:38:09,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637119046] [2021-03-11 00:38:09,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:38:09,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:09,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:38:09,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:38:09,965 INFO L87 Difference]: Start difference. First operand 3598 states and 12041 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:10,913 INFO L93 Difference]: Finished difference Result 3832 states and 12726 transitions. [2021-03-11 00:38:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 00:38:10,914 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:38:10,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:10,920 INFO L225 Difference]: With dead ends: 3832 [2021-03-11 00:38:10,920 INFO L226 Difference]: Without dead ends: 3670 [2021-03-11 00:38:10,920 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 593.2ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 00:38:10,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-03-11 00:38:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3530. [2021-03-11 00:38:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 3529 states have (on average 3.3587418532162086) internal successors, (11853), 3529 states have internal predecessors, (11853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 11853 transitions. [2021-03-11 00:38:10,970 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 11853 transitions. Word has length 39 [2021-03-11 00:38:10,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:10,970 INFO L480 AbstractCegarLoop]: Abstraction has 3530 states and 11853 transitions. [2021-03-11 00:38:10,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:38:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 11853 transitions. [2021-03-11 00:38:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:10,975 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:10,975 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:10,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-11 00:38:10,975 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:10,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1440335206, now seen corresponding path program 54 times [2021-03-11 00:38:10,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:10,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368503014] [2021-03-11 00:38:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:11,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368503014] [2021-03-11 00:38:11,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:11,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:11,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801480370] [2021-03-11 00:38:11,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:11,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:11,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:11,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:11,193 INFO L87 Difference]: Start difference. First operand 3530 states and 11853 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:12,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:12,760 INFO L93 Difference]: Finished difference Result 3963 states and 13168 transitions. [2021-03-11 00:38:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 00:38:12,762 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:12,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:12,768 INFO L225 Difference]: With dead ends: 3963 [2021-03-11 00:38:12,768 INFO L226 Difference]: Without dead ends: 3896 [2021-03-11 00:38:12,769 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 921.6ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:38:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-03-11 00:38:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3566. [2021-03-11 00:38:12,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3565 states have (on average 3.3545582047685834) internal successors, (11959), 3565 states have internal predecessors, (11959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 11959 transitions. [2021-03-11 00:38:12,819 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 11959 transitions. Word has length 39 [2021-03-11 00:38:12,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:12,820 INFO L480 AbstractCegarLoop]: Abstraction has 3566 states and 11959 transitions. [2021-03-11 00:38:12,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 11959 transitions. [2021-03-11 00:38:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:12,824 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:12,824 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:12,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-11 00:38:12,824 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:12,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:12,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1135016120, now seen corresponding path program 55 times [2021-03-11 00:38:12,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:12,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096411476] [2021-03-11 00:38:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:13,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096411476] [2021-03-11 00:38:13,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:13,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:13,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315543379] [2021-03-11 00:38:13,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:13,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:13,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:13,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:13,050 INFO L87 Difference]: Start difference. First operand 3566 states and 11959 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:14,850 INFO L93 Difference]: Finished difference Result 4048 states and 13357 transitions. [2021-03-11 00:38:14,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-11 00:38:14,850 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:14,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:14,858 INFO L225 Difference]: With dead ends: 4048 [2021-03-11 00:38:14,858 INFO L226 Difference]: Without dead ends: 4005 [2021-03-11 00:38:14,859 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1154.5ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 00:38:14,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2021-03-11 00:38:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 3572. [2021-03-11 00:38:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3572 states, 3571 states have (on average 3.352562307476897) internal successors, (11972), 3571 states have internal predecessors, (11972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 11972 transitions. [2021-03-11 00:38:14,923 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 11972 transitions. Word has length 39 [2021-03-11 00:38:14,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:14,923 INFO L480 AbstractCegarLoop]: Abstraction has 3572 states and 11972 transitions. [2021-03-11 00:38:14,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 11972 transitions. [2021-03-11 00:38:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:14,928 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:14,929 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:14,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-11 00:38:14,929 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:14,929 INFO L82 PathProgramCache]: Analyzing trace with hash -645582182, now seen corresponding path program 56 times [2021-03-11 00:38:14,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:14,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907628806] [2021-03-11 00:38:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:15,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907628806] [2021-03-11 00:38:15,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:15,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:15,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875546080] [2021-03-11 00:38:15,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:15,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:15,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:15,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:15,210 INFO L87 Difference]: Start difference. First operand 3572 states and 11972 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:16,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:16,937 INFO L93 Difference]: Finished difference Result 4003 states and 13253 transitions. [2021-03-11 00:38:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 00:38:16,937 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:16,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:16,944 INFO L225 Difference]: With dead ends: 4003 [2021-03-11 00:38:16,944 INFO L226 Difference]: Without dead ends: 3939 [2021-03-11 00:38:16,945 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1121.7ms TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 00:38:16,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-03-11 00:38:16,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3554. [2021-03-11 00:38:16,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3574444131719674) internal successors, (11929), 3553 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11929 transitions. [2021-03-11 00:38:16,996 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11929 transitions. Word has length 39 [2021-03-11 00:38:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:16,997 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11929 transitions. [2021-03-11 00:38:16,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11929 transitions. [2021-03-11 00:38:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:17,001 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:17,001 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:17,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-11 00:38:17,001 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:17,002 INFO L82 PathProgramCache]: Analyzing trace with hash -25147782, now seen corresponding path program 57 times [2021-03-11 00:38:17,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:17,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800510367] [2021-03-11 00:38:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:17,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800510367] [2021-03-11 00:38:17,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:17,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:17,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726091225] [2021-03-11 00:38:17,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:17,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:17,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:17,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:17,218 INFO L87 Difference]: Start difference. First operand 3554 states and 11929 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:18,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:18,867 INFO L93 Difference]: Finished difference Result 3963 states and 13162 transitions. [2021-03-11 00:38:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 00:38:18,868 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:18,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:18,875 INFO L225 Difference]: With dead ends: 3963 [2021-03-11 00:38:18,876 INFO L226 Difference]: Without dead ends: 3896 [2021-03-11 00:38:18,876 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 946.1ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:38:18,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-03-11 00:38:18,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3562. [2021-03-11 00:38:18,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3543948329121034) internal successors, (11945), 3561 states have internal predecessors, (11945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-03-11 00:38:18,939 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-03-11 00:38:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:18,939 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-03-11 00:38:18,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-03-11 00:38:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:18,944 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:18,944 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:18,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-11 00:38:18,945 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:18,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash -155742630, now seen corresponding path program 58 times [2021-03-11 00:38:18,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:18,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45515234] [2021-03-11 00:38:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:19,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45515234] [2021-03-11 00:38:19,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:19,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:19,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289204358] [2021-03-11 00:38:19,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:19,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:19,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:19,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:19,210 INFO L87 Difference]: Start difference. First operand 3562 states and 11945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:20,530 INFO L93 Difference]: Finished difference Result 3951 states and 13122 transitions. [2021-03-11 00:38:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:38:20,531 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:20,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:20,539 INFO L225 Difference]: With dead ends: 3951 [2021-03-11 00:38:20,539 INFO L226 Difference]: Without dead ends: 3888 [2021-03-11 00:38:20,540 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 851.1ms TimeCoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 00:38:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-03-11 00:38:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3554. [2021-03-11 00:38:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3563186039966224) internal successors, (11925), 3553 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-03-11 00:38:20,606 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-03-11 00:38:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:20,606 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-03-11 00:38:20,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-03-11 00:38:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:20,611 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:20,611 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:20,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-11 00:38:20,612 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:20,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:20,612 INFO L82 PathProgramCache]: Analyzing trace with hash -291421222, now seen corresponding path program 59 times [2021-03-11 00:38:20,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:20,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107651558] [2021-03-11 00:38:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:20,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107651558] [2021-03-11 00:38:20,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:20,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:20,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642032056] [2021-03-11 00:38:20,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:20,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:20,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:20,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:20,903 INFO L87 Difference]: Start difference. First operand 3554 states and 11925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:23,041 INFO L93 Difference]: Finished difference Result 4114 states and 13511 transitions. [2021-03-11 00:38:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-11 00:38:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:23,048 INFO L225 Difference]: With dead ends: 4114 [2021-03-11 00:38:23,049 INFO L226 Difference]: Without dead ends: 4071 [2021-03-11 00:38:23,049 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1351.8ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-03-11 00:38:23,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-03-11 00:38:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3562. [2021-03-11 00:38:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3543948329121034) internal successors, (11945), 3561 states have internal predecessors, (11945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-03-11 00:38:23,102 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-03-11 00:38:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:23,102 INFO L480 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-03-11 00:38:23,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-03-11 00:38:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:23,106 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:23,106 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:23,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-11 00:38:23,106 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:23,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:23,107 INFO L82 PathProgramCache]: Analyzing trace with hash -2072019524, now seen corresponding path program 60 times [2021-03-11 00:38:23,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:23,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677161132] [2021-03-11 00:38:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:23,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677161132] [2021-03-11 00:38:23,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:23,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:23,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326413224] [2021-03-11 00:38:23,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:23,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:23,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:23,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:23,339 INFO L87 Difference]: Start difference. First operand 3562 states and 11945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:25,325 INFO L93 Difference]: Finished difference Result 4102 states and 13473 transitions. [2021-03-11 00:38:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:38:25,326 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:25,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:25,334 INFO L225 Difference]: With dead ends: 4102 [2021-03-11 00:38:25,335 INFO L226 Difference]: Without dead ends: 4050 [2021-03-11 00:38:25,335 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1264.9ms TimeCoverageRelationStatistics Valid=292, Invalid=2900, Unknown=0, NotChecked=0, Total=3192 [2021-03-11 00:38:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2021-03-11 00:38:25,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 3554. [2021-03-11 00:38:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3563186039966224) internal successors, (11925), 3553 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-03-11 00:38:25,405 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-03-11 00:38:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:25,405 INFO L480 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-03-11 00:38:25,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-03-11 00:38:25,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:25,411 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:25,411 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:25,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-11 00:38:25,411 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:25,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:25,411 INFO L82 PathProgramCache]: Analyzing trace with hash 627062348, now seen corresponding path program 61 times [2021-03-11 00:38:25,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:25,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747184989] [2021-03-11 00:38:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:25,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747184989] [2021-03-11 00:38:25,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:25,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:25,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527379821] [2021-03-11 00:38:25,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:25,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:25,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:25,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:25,750 INFO L87 Difference]: Start difference. First operand 3554 states and 11925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:27,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:27,627 INFO L93 Difference]: Finished difference Result 4079 states and 13396 transitions. [2021-03-11 00:38:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 00:38:27,628 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:27,636 INFO L225 Difference]: With dead ends: 4079 [2021-03-11 00:38:27,636 INFO L226 Difference]: Without dead ends: 4024 [2021-03-11 00:38:27,637 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1192.0ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:38:27,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-03-11 00:38:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3556. [2021-03-11 00:38:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.3552742616033755) internal successors, (11928), 3555 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11928 transitions. [2021-03-11 00:38:27,702 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11928 transitions. Word has length 39 [2021-03-11 00:38:27,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:27,702 INFO L480 AbstractCegarLoop]: Abstraction has 3556 states and 11928 transitions. [2021-03-11 00:38:27,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:27,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11928 transitions. [2021-03-11 00:38:27,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:27,707 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:27,707 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:27,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-11 00:38:27,707 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:27,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1799714570, now seen corresponding path program 62 times [2021-03-11 00:38:27,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:27,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578752372] [2021-03-11 00:38:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:28,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578752372] [2021-03-11 00:38:28,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:28,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:28,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866226373] [2021-03-11 00:38:28,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:28,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:28,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:28,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:28,002 INFO L87 Difference]: Start difference. First operand 3556 states and 11928 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:29,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:29,428 INFO L93 Difference]: Finished difference Result 4014 states and 13244 transitions. [2021-03-11 00:38:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 00:38:29,429 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:29,436 INFO L225 Difference]: With dead ends: 4014 [2021-03-11 00:38:29,436 INFO L226 Difference]: Without dead ends: 3968 [2021-03-11 00:38:29,436 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 895.9ms TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:38:29,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-03-11 00:38:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3560. [2021-03-11 00:38:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.3537510536667603) internal successors, (11936), 3559 states have internal predecessors, (11936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11936 transitions. [2021-03-11 00:38:29,485 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11936 transitions. Word has length 39 [2021-03-11 00:38:29,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:29,485 INFO L480 AbstractCegarLoop]: Abstraction has 3560 states and 11936 transitions. [2021-03-11 00:38:29,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:29,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11936 transitions. [2021-03-11 00:38:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:29,489 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:29,489 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:29,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-11 00:38:29,490 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:29,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1552248408, now seen corresponding path program 63 times [2021-03-11 00:38:29,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:29,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330552233] [2021-03-11 00:38:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:29,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330552233] [2021-03-11 00:38:29,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:29,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:29,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404333121] [2021-03-11 00:38:29,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:29,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:29,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:29,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:29,711 INFO L87 Difference]: Start difference. First operand 3560 states and 11936 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:31,376 INFO L93 Difference]: Finished difference Result 3980 states and 13174 transitions. [2021-03-11 00:38:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 00:38:31,378 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:31,386 INFO L225 Difference]: With dead ends: 3980 [2021-03-11 00:38:31,386 INFO L226 Difference]: Without dead ends: 3931 [2021-03-11 00:38:31,387 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1088.2ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 00:38:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-03-11 00:38:31,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3550. [2021-03-11 00:38:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.3572837418991264) internal successors, (11915), 3549 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11915 transitions. [2021-03-11 00:38:31,458 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11915 transitions. Word has length 39 [2021-03-11 00:38:31,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:31,458 INFO L480 AbstractCegarLoop]: Abstraction has 3550 states and 11915 transitions. [2021-03-11 00:38:31,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11915 transitions. [2021-03-11 00:38:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:31,464 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:31,464 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:31,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-11 00:38:31,464 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:31,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1203843366, now seen corresponding path program 64 times [2021-03-11 00:38:31,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:31,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580632194] [2021-03-11 00:38:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:31,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580632194] [2021-03-11 00:38:31,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:31,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:31,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895969614] [2021-03-11 00:38:31,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:31,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:31,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:31,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:31,788 INFO L87 Difference]: Start difference. First operand 3550 states and 11915 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:33,597 INFO L93 Difference]: Finished difference Result 4021 states and 13349 transitions. [2021-03-11 00:38:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:38:33,598 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:33,606 INFO L225 Difference]: With dead ends: 4021 [2021-03-11 00:38:33,606 INFO L226 Difference]: Without dead ends: 3954 [2021-03-11 00:38:33,607 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1020.4ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:38:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-03-11 00:38:33,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3590. [2021-03-11 00:38:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 3.3499582056283086) internal successors, (12023), 3589 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12023 transitions. [2021-03-11 00:38:33,673 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12023 transitions. Word has length 39 [2021-03-11 00:38:33,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:33,674 INFO L480 AbstractCegarLoop]: Abstraction has 3590 states and 12023 transitions. [2021-03-11 00:38:33,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:33,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12023 transitions. [2021-03-11 00:38:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:33,679 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:33,679 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:33,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-11 00:38:33,679 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:33,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1334438214, now seen corresponding path program 65 times [2021-03-11 00:38:33,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:33,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273719727] [2021-03-11 00:38:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:33,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273719727] [2021-03-11 00:38:33,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:33,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:33,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077629439] [2021-03-11 00:38:33,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:33,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:33,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:33,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:33,969 INFO L87 Difference]: Start difference. First operand 3590 states and 12023 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:35,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:35,610 INFO L93 Difference]: Finished difference Result 4009 states and 13309 transitions. [2021-03-11 00:38:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:38:35,610 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:35,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:35,617 INFO L225 Difference]: With dead ends: 4009 [2021-03-11 00:38:35,617 INFO L226 Difference]: Without dead ends: 3946 [2021-03-11 00:38:35,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 885.0ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:38:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-03-11 00:38:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3582. [2021-03-11 00:38:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3507400167550965) internal successors, (11999), 3581 states have internal predecessors, (11999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:35,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 11999 transitions. [2021-03-11 00:38:35,676 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 11999 transitions. Word has length 39 [2021-03-11 00:38:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:35,676 INFO L480 AbstractCegarLoop]: Abstraction has 3582 states and 11999 transitions. [2021-03-11 00:38:35,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 11999 transitions. [2021-03-11 00:38:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:35,681 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:35,681 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:35,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-11 00:38:35,681 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:35,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1864338662, now seen corresponding path program 66 times [2021-03-11 00:38:35,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:35,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884333718] [2021-03-11 00:38:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:35,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884333718] [2021-03-11 00:38:35,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:35,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:35,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262683330] [2021-03-11 00:38:35,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:35,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:35,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:35,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:35,909 INFO L87 Difference]: Start difference. First operand 3582 states and 11999 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:37,213 INFO L93 Difference]: Finished difference Result 4021 states and 13337 transitions. [2021-03-11 00:38:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:38:37,214 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:37,222 INFO L225 Difference]: With dead ends: 4021 [2021-03-11 00:38:37,222 INFO L226 Difference]: Without dead ends: 3898 [2021-03-11 00:38:37,222 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 731.6ms TimeCoverageRelationStatistics Valid=182, Invalid=1710, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:38:37,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-03-11 00:38:37,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3550. [2021-03-11 00:38:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.352775429698507) internal successors, (11899), 3549 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-03-11 00:38:37,280 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-03-11 00:38:37,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:37,280 INFO L480 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-03-11 00:38:37,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:37,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-03-11 00:38:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:37,285 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:37,285 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:37,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-11 00:38:37,285 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:37,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:37,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1712217464, now seen corresponding path program 67 times [2021-03-11 00:38:37,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:37,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812739401] [2021-03-11 00:38:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:37,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812739401] [2021-03-11 00:38:37,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:37,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:37,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019487561] [2021-03-11 00:38:37,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:37,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:37,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:37,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:37,664 INFO L87 Difference]: Start difference. First operand 3550 states and 11899 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:40,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:40,982 INFO L93 Difference]: Finished difference Result 5827 states and 19628 transitions. [2021-03-11 00:38:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-11 00:38:40,983 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:40,996 INFO L225 Difference]: With dead ends: 5827 [2021-03-11 00:38:40,996 INFO L226 Difference]: Without dead ends: 5741 [2021-03-11 00:38:40,997 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1843.6ms TimeCoverageRelationStatistics Valid=346, Invalid=3814, Unknown=0, NotChecked=0, Total=4160 [2021-03-11 00:38:41,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-03-11 00:38:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 3628. [2021-03-11 00:38:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 3.3493245106148333) internal successors, (12148), 3627 states have internal predecessors, (12148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:41,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-03-11 00:38:41,080 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-03-11 00:38:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:41,080 INFO L480 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-03-11 00:38:41,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:41,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-03-11 00:38:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:41,091 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:41,091 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:41,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-11 00:38:41,091 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:41,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:41,092 INFO L82 PathProgramCache]: Analyzing trace with hash -68380838, now seen corresponding path program 68 times [2021-03-11 00:38:41,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:41,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070941228] [2021-03-11 00:38:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:41,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070941228] [2021-03-11 00:38:41,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:41,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:41,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074554940] [2021-03-11 00:38:41,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:41,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:41,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:41,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:41,338 INFO L87 Difference]: Start difference. First operand 3628 states and 12148 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:44,433 INFO L93 Difference]: Finished difference Result 6643 states and 22454 transitions. [2021-03-11 00:38:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-03-11 00:38:44,434 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:44,448 INFO L225 Difference]: With dead ends: 6643 [2021-03-11 00:38:44,448 INFO L226 Difference]: Without dead ends: 6539 [2021-03-11 00:38:44,448 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 1671.3ms TimeCoverageRelationStatistics Valid=389, Invalid=4581, Unknown=0, NotChecked=0, Total=4970 [2021-03-11 00:38:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2021-03-11 00:38:44,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 3598. [2021-03-11 00:38:44,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.349179872115652) internal successors, (12047), 3597 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-03-11 00:38:44,531 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-03-11 00:38:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:44,531 INFO L480 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-03-11 00:38:44,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-03-11 00:38:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:44,537 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:44,537 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:44,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-11 00:38:44,537 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:44,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:44,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1664266262, now seen corresponding path program 69 times [2021-03-11 00:38:44,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:44,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925537640] [2021-03-11 00:38:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:44,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925537640] [2021-03-11 00:38:44,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:44,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:44,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080620199] [2021-03-11 00:38:44,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:44,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:44,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:44,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:44,867 INFO L87 Difference]: Start difference. First operand 3598 states and 12047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:47,393 INFO L93 Difference]: Finished difference Result 5563 states and 18662 transitions. [2021-03-11 00:38:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:38:47,394 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:47,403 INFO L225 Difference]: With dead ends: 5563 [2021-03-11 00:38:47,403 INFO L226 Difference]: Without dead ends: 5508 [2021-03-11 00:38:47,403 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1276.4ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 00:38:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-03-11 00:38:47,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3626. [2021-03-11 00:38:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.3481379310344828) internal successors, (12137), 3625 states have internal predecessors, (12137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12137 transitions. [2021-03-11 00:38:47,462 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12137 transitions. Word has length 39 [2021-03-11 00:38:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:47,462 INFO L480 AbstractCegarLoop]: Abstraction has 3626 states and 12137 transitions. [2021-03-11 00:38:47,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12137 transitions. [2021-03-11 00:38:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:47,466 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:47,466 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:47,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-11 00:38:47,466 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:47,467 INFO L82 PathProgramCache]: Analyzing trace with hash -491614040, now seen corresponding path program 70 times [2021-03-11 00:38:47,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:47,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404976471] [2021-03-11 00:38:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:47,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404976471] [2021-03-11 00:38:47,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:47,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:47,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689168667] [2021-03-11 00:38:47,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:47,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:47,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:47,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:47,709 INFO L87 Difference]: Start difference. First operand 3626 states and 12137 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:50,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:50,590 INFO L93 Difference]: Finished difference Result 6424 states and 21596 transitions. [2021-03-11 00:38:50,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 00:38:50,591 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:50,605 INFO L225 Difference]: With dead ends: 6424 [2021-03-11 00:38:50,605 INFO L226 Difference]: Without dead ends: 6364 [2021-03-11 00:38:50,606 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1449.9ms TimeCoverageRelationStatistics Valid=298, Invalid=3242, Unknown=0, NotChecked=0, Total=3540 [2021-03-11 00:38:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-03-11 00:38:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3624. [2021-03-11 00:38:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.348606127518631) internal successors, (12132), 3623 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12132 transitions. [2021-03-11 00:38:50,682 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12132 transitions. Word has length 39 [2021-03-11 00:38:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:50,683 INFO L480 AbstractCegarLoop]: Abstraction has 3624 states and 12132 transitions. [2021-03-11 00:38:50,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12132 transitions. [2021-03-11 00:38:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:50,688 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:50,688 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:50,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-11 00:38:50,688 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:50,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:50,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1925949654, now seen corresponding path program 71 times [2021-03-11 00:38:50,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:50,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025947067] [2021-03-11 00:38:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:51,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025947067] [2021-03-11 00:38:51,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:51,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:51,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039220481] [2021-03-11 00:38:51,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:51,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:51,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:51,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:51,048 INFO L87 Difference]: Start difference. First operand 3624 states and 12132 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:53,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:53,532 INFO L93 Difference]: Finished difference Result 5514 states and 18559 transitions. [2021-03-11 00:38:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 00:38:53,533 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:53,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:53,542 INFO L225 Difference]: With dead ends: 5514 [2021-03-11 00:38:53,542 INFO L226 Difference]: Without dead ends: 5423 [2021-03-11 00:38:53,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1256.4ms TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:38:53,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2021-03-11 00:38:53,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 3624. [2021-03-11 00:38:53,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.346950041402153) internal successors, (12126), 3623 states have internal predecessors, (12126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:53,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12126 transitions. [2021-03-11 00:38:53,599 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12126 transitions. Word has length 39 [2021-03-11 00:38:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:53,599 INFO L480 AbstractCegarLoop]: Abstraction has 3624 states and 12126 transitions. [2021-03-11 00:38:53,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12126 transitions. [2021-03-11 00:38:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:53,603 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:53,604 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:53,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-11 00:38:53,604 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:53,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:53,604 INFO L82 PathProgramCache]: Analyzing trace with hash 423467448, now seen corresponding path program 72 times [2021-03-11 00:38:53,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:53,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489547532] [2021-03-11 00:38:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:53,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489547532] [2021-03-11 00:38:53,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:53,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:53,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236818591] [2021-03-11 00:38:53,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:53,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:53,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:53,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:53,848 INFO L87 Difference]: Start difference. First operand 3624 states and 12126 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:56,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:56,427 INFO L93 Difference]: Finished difference Result 6327 states and 21361 transitions. [2021-03-11 00:38:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:38:56,428 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:56,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:56,442 INFO L225 Difference]: With dead ends: 6327 [2021-03-11 00:38:56,442 INFO L226 Difference]: Without dead ends: 6211 [2021-03-11 00:38:56,442 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1232.7ms TimeCoverageRelationStatistics Valid=257, Invalid=2713, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 00:38:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2021-03-11 00:38:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 3586. [2021-03-11 00:38:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 3.3531380753138076) internal successors, (12021), 3585 states have internal predecessors, (12021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 12021 transitions. [2021-03-11 00:38:56,527 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 12021 transitions. Word has length 39 [2021-03-11 00:38:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:56,527 INFO L480 AbstractCegarLoop]: Abstraction has 3586 states and 12021 transitions. [2021-03-11 00:38:56,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 12021 transitions. [2021-03-11 00:38:56,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:56,533 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:56,533 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:56,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-11 00:38:56,533 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:56,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:56,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1052700712, now seen corresponding path program 73 times [2021-03-11 00:38:56,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:56,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257749677] [2021-03-11 00:38:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:56,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257749677] [2021-03-11 00:38:56,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:56,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:56,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667193255] [2021-03-11 00:38:56,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:56,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:56,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:56,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:56,904 INFO L87 Difference]: Start difference. First operand 3586 states and 12021 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:38:58,571 INFO L93 Difference]: Finished difference Result 3853 states and 12803 transitions. [2021-03-11 00:38:58,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 00:38:58,572 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:38:58,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:38:58,581 INFO L225 Difference]: With dead ends: 3853 [2021-03-11 00:38:58,581 INFO L226 Difference]: Without dead ends: 3786 [2021-03-11 00:38:58,581 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1037.9ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 00:38:58,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-03-11 00:38:58,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3634. [2021-03-11 00:38:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3440682631434075) internal successors, (12149), 3633 states have internal predecessors, (12149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:38:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12149 transitions. [2021-03-11 00:38:58,648 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12149 transitions. Word has length 39 [2021-03-11 00:38:58,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:38:58,648 INFO L480 AbstractCegarLoop]: Abstraction has 3634 states and 12149 transitions. [2021-03-11 00:38:58,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:38:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12149 transitions. [2021-03-11 00:38:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:38:58,654 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:38:58,654 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:38:58,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-11 00:38:58,654 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:38:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:38:58,654 INFO L82 PathProgramCache]: Analyzing trace with hash 880557494, now seen corresponding path program 74 times [2021-03-11 00:38:58,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:38:58,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464662943] [2021-03-11 00:38:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:38:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:38:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:38:59,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464662943] [2021-03-11 00:38:59,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:38:59,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:38:59,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708763155] [2021-03-11 00:38:59,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:38:59,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:38:59,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:38:59,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:38:59,020 INFO L87 Difference]: Start difference. First operand 3634 states and 12149 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:00,230 INFO L93 Difference]: Finished difference Result 3841 states and 12763 transitions. [2021-03-11 00:39:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 00:39:00,231 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:00,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:00,237 INFO L225 Difference]: With dead ends: 3841 [2021-03-11 00:39:00,237 INFO L226 Difference]: Without dead ends: 3778 [2021-03-11 00:39:00,237 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 861.7ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 00:39:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-03-11 00:39:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3626. [2021-03-11 00:39:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.3448275862068964) internal successors, (12125), 3625 states have internal predecessors, (12125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12125 transitions. [2021-03-11 00:39:00,285 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12125 transitions. Word has length 39 [2021-03-11 00:39:00,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:00,286 INFO L480 AbstractCegarLoop]: Abstraction has 3626 states and 12125 transitions. [2021-03-11 00:39:00,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12125 transitions. [2021-03-11 00:39:00,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:00,290 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:00,290 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:00,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-11 00:39:00,290 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:00,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:00,290 INFO L82 PathProgramCache]: Analyzing trace with hash -922276662, now seen corresponding path program 75 times [2021-03-11 00:39:00,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:00,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628841639] [2021-03-11 00:39:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:00,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628841639] [2021-03-11 00:39:00,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:00,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:00,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164496003] [2021-03-11 00:39:00,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:00,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:00,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:00,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:00,554 INFO L87 Difference]: Start difference. First operand 3626 states and 12125 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:02,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:02,071 INFO L93 Difference]: Finished difference Result 3841 states and 12755 transitions. [2021-03-11 00:39:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 00:39:02,073 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:02,081 INFO L225 Difference]: With dead ends: 3841 [2021-03-11 00:39:02,081 INFO L226 Difference]: Without dead ends: 3698 [2021-03-11 00:39:02,081 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 940.4ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 00:39:02,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-03-11 00:39:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3574. [2021-03-11 00:39:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.355443604813882) internal successors, (11989), 3573 states have internal predecessors, (11989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11989 transitions. [2021-03-11 00:39:02,147 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11989 transitions. Word has length 39 [2021-03-11 00:39:02,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:02,147 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 11989 transitions. [2021-03-11 00:39:02,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:02,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11989 transitions. [2021-03-11 00:39:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:02,153 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:02,153 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:02,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-11 00:39:02,153 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:02,153 INFO L82 PathProgramCache]: Analyzing trace with hash -235569416, now seen corresponding path program 76 times [2021-03-11 00:39:02,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:02,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430980177] [2021-03-11 00:39:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:02,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:02,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430980177] [2021-03-11 00:39:02,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:02,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:02,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179913070] [2021-03-11 00:39:02,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:02,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:02,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:02,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:02,572 INFO L87 Difference]: Start difference. First operand 3574 states and 11989 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:04,627 INFO L93 Difference]: Finished difference Result 3979 states and 13198 transitions. [2021-03-11 00:39:04,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:39:04,628 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:04,636 INFO L225 Difference]: With dead ends: 3979 [2021-03-11 00:39:04,636 INFO L226 Difference]: Without dead ends: 3912 [2021-03-11 00:39:04,636 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1317.7ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:39:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-03-11 00:39:04,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3622. [2021-03-11 00:39:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 3.3512841756420877) internal successors, (12135), 3621 states have internal predecessors, (12135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12135 transitions. [2021-03-11 00:39:04,702 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12135 transitions. Word has length 39 [2021-03-11 00:39:04,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:04,702 INFO L480 AbstractCegarLoop]: Abstraction has 3622 states and 12135 transitions. [2021-03-11 00:39:04,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12135 transitions. [2021-03-11 00:39:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:04,708 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:04,708 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:04,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-11 00:39:04,708 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:04,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1955185386, now seen corresponding path program 77 times [2021-03-11 00:39:04,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:04,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072305959] [2021-03-11 00:39:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:05,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072305959] [2021-03-11 00:39:05,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:05,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:05,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655033293] [2021-03-11 00:39:05,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:05,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:05,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:05,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:05,078 INFO L87 Difference]: Start difference. First operand 3622 states and 12135 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:06,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:06,977 INFO L93 Difference]: Finished difference Result 4064 states and 13387 transitions. [2021-03-11 00:39:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 00:39:06,977 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:06,984 INFO L225 Difference]: With dead ends: 4064 [2021-03-11 00:39:06,984 INFO L226 Difference]: Without dead ends: 4021 [2021-03-11 00:39:06,984 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 1298.7ms TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2021-03-11 00:39:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-03-11 00:39:07,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3628. [2021-03-11 00:39:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 3.3493245106148333) internal successors, (12148), 3627 states have internal predecessors, (12148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-03-11 00:39:07,052 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-03-11 00:39:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:07,053 INFO L480 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-03-11 00:39:07,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-03-11 00:39:07,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:07,057 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:07,057 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:07,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-11 00:39:07,057 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:07,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:07,057 INFO L82 PathProgramCache]: Analyzing trace with hash 559183608, now seen corresponding path program 78 times [2021-03-11 00:39:07,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:07,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359390311] [2021-03-11 00:39:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:07,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359390311] [2021-03-11 00:39:07,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:07,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:07,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967946754] [2021-03-11 00:39:07,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:07,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:07,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:07,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:07,307 INFO L87 Difference]: Start difference. First operand 3628 states and 12148 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:09,877 INFO L93 Difference]: Finished difference Result 4019 states and 13283 transitions. [2021-03-11 00:39:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 00:39:09,879 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:09,887 INFO L225 Difference]: With dead ends: 4019 [2021-03-11 00:39:09,887 INFO L226 Difference]: Without dead ends: 3955 [2021-03-11 00:39:09,887 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1510.1ms TimeCoverageRelationStatistics Valid=254, Invalid=2502, Unknown=0, NotChecked=0, Total=2756 [2021-03-11 00:39:09,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-03-11 00:39:09,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3610. [2021-03-11 00:39:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.3541147132169575) internal successors, (12105), 3609 states have internal predecessors, (12105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12105 transitions. [2021-03-11 00:39:09,956 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12105 transitions. Word has length 39 [2021-03-11 00:39:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:09,956 INFO L480 AbstractCegarLoop]: Abstraction has 3610 states and 12105 transitions. [2021-03-11 00:39:09,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12105 transitions. [2021-03-11 00:39:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:09,962 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:09,962 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:09,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-11 00:39:09,962 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:09,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:09,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1179618008, now seen corresponding path program 79 times [2021-03-11 00:39:09,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:09,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645039826] [2021-03-11 00:39:09,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:10,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645039826] [2021-03-11 00:39:10,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:10,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:10,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864228960] [2021-03-11 00:39:10,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:10,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:10,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:10,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:10,346 INFO L87 Difference]: Start difference. First operand 3610 states and 12105 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:12,111 INFO L93 Difference]: Finished difference Result 3979 states and 13192 transitions. [2021-03-11 00:39:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:39:12,112 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:12,119 INFO L225 Difference]: With dead ends: 3979 [2021-03-11 00:39:12,119 INFO L226 Difference]: Without dead ends: 3912 [2021-03-11 00:39:12,119 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1100.5ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:39:12,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-03-11 00:39:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3618. [2021-03-11 00:39:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3617 states have (on average 3.351119712468897) internal successors, (12121), 3617 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-03-11 00:39:12,189 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-03-11 00:39:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:12,189 INFO L480 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-03-11 00:39:12,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-03-11 00:39:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:12,194 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:12,194 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:12,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-11 00:39:12,195 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:12,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:12,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1049023160, now seen corresponding path program 80 times [2021-03-11 00:39:12,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:12,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992586093] [2021-03-11 00:39:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:12,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992586093] [2021-03-11 00:39:12,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:12,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:12,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301112572] [2021-03-11 00:39:12,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:12,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:12,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:12,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:12,455 INFO L87 Difference]: Start difference. First operand 3618 states and 12121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:14,129 INFO L93 Difference]: Finished difference Result 3967 states and 13152 transitions. [2021-03-11 00:39:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 00:39:14,130 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:14,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:14,138 INFO L225 Difference]: With dead ends: 3967 [2021-03-11 00:39:14,139 INFO L226 Difference]: Without dead ends: 3904 [2021-03-11 00:39:14,139 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 1029.7ms TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:39:14,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-03-11 00:39:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3610. [2021-03-11 00:39:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.353006372956498) internal successors, (12101), 3609 states have internal predecessors, (12101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-03-11 00:39:14,210 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-03-11 00:39:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:14,210 INFO L480 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-03-11 00:39:14,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-03-11 00:39:14,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:14,216 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:14,216 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:14,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-11 00:39:14,216 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:14,217 INFO L82 PathProgramCache]: Analyzing trace with hash 913344568, now seen corresponding path program 81 times [2021-03-11 00:39:14,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:14,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824296083] [2021-03-11 00:39:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:14,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824296083] [2021-03-11 00:39:14,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:14,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:14,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820779564] [2021-03-11 00:39:14,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:14,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:14,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:14,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:14,634 INFO L87 Difference]: Start difference. First operand 3610 states and 12101 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:17,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:17,271 INFO L93 Difference]: Finished difference Result 4130 states and 13541 transitions. [2021-03-11 00:39:17,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-11 00:39:17,272 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:17,278 INFO L225 Difference]: With dead ends: 4130 [2021-03-11 00:39:17,278 INFO L226 Difference]: Without dead ends: 4087 [2021-03-11 00:39:17,279 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1656.6ms TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 00:39:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2021-03-11 00:39:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 3618. [2021-03-11 00:39:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3617 states have (on average 3.351119712468897) internal successors, (12121), 3617 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-03-11 00:39:17,345 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-03-11 00:39:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:17,345 INFO L480 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-03-11 00:39:17,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:17,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-03-11 00:39:17,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:17,350 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:17,350 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:17,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-11 00:39:17,350 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:17,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:17,351 INFO L82 PathProgramCache]: Analyzing trace with hash -867253734, now seen corresponding path program 82 times [2021-03-11 00:39:17,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:17,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647928887] [2021-03-11 00:39:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:17,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647928887] [2021-03-11 00:39:17,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:17,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:17,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761259990] [2021-03-11 00:39:17,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:17,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:17,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:17,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:17,622 INFO L87 Difference]: Start difference. First operand 3618 states and 12121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:19,785 INFO L93 Difference]: Finished difference Result 4118 states and 13503 transitions. [2021-03-11 00:39:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 00:39:19,787 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:19,795 INFO L225 Difference]: With dead ends: 4118 [2021-03-11 00:39:19,796 INFO L226 Difference]: Without dead ends: 4066 [2021-03-11 00:39:19,796 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1441.4ms TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 00:39:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-03-11 00:39:19,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3610. [2021-03-11 00:39:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.353006372956498) internal successors, (12101), 3609 states have internal predecessors, (12101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-03-11 00:39:19,866 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-03-11 00:39:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:19,866 INFO L480 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-03-11 00:39:19,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-03-11 00:39:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:19,872 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:19,872 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:19,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-11 00:39:19,872 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:19,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1831828138, now seen corresponding path program 83 times [2021-03-11 00:39:19,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:19,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241671888] [2021-03-11 00:39:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:20,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241671888] [2021-03-11 00:39:20,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:20,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:20,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110419911] [2021-03-11 00:39:20,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:20,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:20,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:20,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:20,307 INFO L87 Difference]: Start difference. First operand 3610 states and 12101 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:22,893 INFO L93 Difference]: Finished difference Result 4095 states and 13426 transitions. [2021-03-11 00:39:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 00:39:22,895 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:22,902 INFO L225 Difference]: With dead ends: 4095 [2021-03-11 00:39:22,902 INFO L226 Difference]: Without dead ends: 4040 [2021-03-11 00:39:22,902 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1579.5ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 00:39:22,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-03-11 00:39:22,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3612. [2021-03-11 00:39:22,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3519800609249515) internal successors, (12104), 3611 states have internal predecessors, (12104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12104 transitions. [2021-03-11 00:39:22,965 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12104 transitions. Word has length 39 [2021-03-11 00:39:22,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:22,966 INFO L480 AbstractCegarLoop]: Abstraction has 3612 states and 12104 transitions. [2021-03-11 00:39:22,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12104 transitions. [2021-03-11 00:39:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:22,971 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:22,971 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:22,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-11 00:39:22,971 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:22,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1290486936, now seen corresponding path program 84 times [2021-03-11 00:39:22,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:22,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801298902] [2021-03-11 00:39:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:23,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801298902] [2021-03-11 00:39:23,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:23,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:23,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620840752] [2021-03-11 00:39:23,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:23,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:23,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:23,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:23,348 INFO L87 Difference]: Start difference. First operand 3612 states and 12104 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:24,784 INFO L93 Difference]: Finished difference Result 4030 states and 13274 transitions. [2021-03-11 00:39:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:39:24,785 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:24,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:24,792 INFO L225 Difference]: With dead ends: 4030 [2021-03-11 00:39:24,792 INFO L226 Difference]: Without dead ends: 3984 [2021-03-11 00:39:24,792 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 992.6ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:39:24,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-03-11 00:39:24,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3616. [2021-03-11 00:39:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.350484094052559) internal successors, (12112), 3615 states have internal predecessors, (12112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12112 transitions. [2021-03-11 00:39:24,846 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12112 transitions. Word has length 39 [2021-03-11 00:39:24,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:24,846 INFO L480 AbstractCegarLoop]: Abstraction has 3616 states and 12112 transitions. [2021-03-11 00:39:24,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:24,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12112 transitions. [2021-03-11 00:39:24,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:24,851 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:24,851 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:24,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-11 00:39:24,851 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:24,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:24,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1537953098, now seen corresponding path program 85 times [2021-03-11 00:39:24,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:24,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52229049] [2021-03-11 00:39:24,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:25,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52229049] [2021-03-11 00:39:25,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:25,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:25,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782795667] [2021-03-11 00:39:25,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:25,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:25,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:25,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:25,118 INFO L87 Difference]: Start difference. First operand 3616 states and 12112 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:27,454 INFO L93 Difference]: Finished difference Result 3990 states and 13185 transitions. [2021-03-11 00:39:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:39:27,455 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:27,463 INFO L225 Difference]: With dead ends: 3990 [2021-03-11 00:39:27,463 INFO L226 Difference]: Without dead ends: 3941 [2021-03-11 00:39:27,464 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1313.2ms TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:39:27,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2021-03-11 00:39:27,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3606. [2021-03-11 00:39:27,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.3539528432732317) internal successors, (12091), 3605 states have internal predecessors, (12091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12091 transitions. [2021-03-11 00:39:27,555 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12091 transitions. Word has length 39 [2021-03-11 00:39:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:27,556 INFO L480 AbstractCegarLoop]: Abstraction has 3606 states and 12091 transitions. [2021-03-11 00:39:27,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:27,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12091 transitions. [2021-03-11 00:39:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:27,561 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:27,561 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:27,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-11 00:39:27,561 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:27,562 INFO L82 PathProgramCache]: Analyzing trace with hash 922424, now seen corresponding path program 86 times [2021-03-11 00:39:27,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:27,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754601860] [2021-03-11 00:39:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:27,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754601860] [2021-03-11 00:39:27,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:27,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:27,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842533024] [2021-03-11 00:39:27,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:27,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:27,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:27,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:27,988 INFO L87 Difference]: Start difference. First operand 3606 states and 12091 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:29,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:29,948 INFO L93 Difference]: Finished difference Result 4037 states and 13379 transitions. [2021-03-11 00:39:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 00:39:29,949 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:29,956 INFO L225 Difference]: With dead ends: 4037 [2021-03-11 00:39:29,956 INFO L226 Difference]: Without dead ends: 3970 [2021-03-11 00:39:29,956 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1108.9ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 00:39:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-03-11 00:39:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3646. [2021-03-11 00:39:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3467764060356653) internal successors, (12199), 3645 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12199 transitions. [2021-03-11 00:39:30,006 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12199 transitions. Word has length 39 [2021-03-11 00:39:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:30,006 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12199 transitions. [2021-03-11 00:39:30,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12199 transitions. [2021-03-11 00:39:30,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:30,011 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:30,011 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:30,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-11 00:39:30,011 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:30,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:30,011 INFO L82 PathProgramCache]: Analyzing trace with hash -129672424, now seen corresponding path program 87 times [2021-03-11 00:39:30,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:30,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122108070] [2021-03-11 00:39:30,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:30,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122108070] [2021-03-11 00:39:30,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:30,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:30,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883480753] [2021-03-11 00:39:30,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:30,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:30,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:30,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:30,281 INFO L87 Difference]: Start difference. First operand 3646 states and 12199 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:31,850 INFO L93 Difference]: Finished difference Result 4025 states and 13339 transitions. [2021-03-11 00:39:31,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 00:39:31,852 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:31,861 INFO L225 Difference]: With dead ends: 4025 [2021-03-11 00:39:31,861 INFO L226 Difference]: Without dead ends: 3962 [2021-03-11 00:39:31,861 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 865.7ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 00:39:31,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-03-11 00:39:31,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3638. [2021-03-11 00:39:31,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.3475391806433876) internal successors, (12175), 3637 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12175 transitions. [2021-03-11 00:39:31,933 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12175 transitions. Word has length 39 [2021-03-11 00:39:31,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:31,933 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12175 transitions. [2021-03-11 00:39:31,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:31,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12175 transitions. [2021-03-11 00:39:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:31,939 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:31,939 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:31,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-11 00:39:31,940 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:31,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:31,940 INFO L82 PathProgramCache]: Analyzing trace with hash -659572872, now seen corresponding path program 88 times [2021-03-11 00:39:31,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:31,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005950329] [2021-03-11 00:39:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:32,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005950329] [2021-03-11 00:39:32,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:32,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:32,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681698135] [2021-03-11 00:39:32,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:32,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:32,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:32,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:32,451 INFO L87 Difference]: Start difference. First operand 3638 states and 12175 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:34,936 INFO L93 Difference]: Finished difference Result 4037 states and 13367 transitions. [2021-03-11 00:39:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 00:39:34,937 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:34,944 INFO L225 Difference]: With dead ends: 4037 [2021-03-11 00:39:34,944 INFO L226 Difference]: Without dead ends: 3914 [2021-03-11 00:39:34,945 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1394.4ms TimeCoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 00:39:34,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-03-11 00:39:34,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3606. [2021-03-11 00:39:34,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.349514563106796) internal successors, (12075), 3605 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-03-11 00:39:35,003 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-03-11 00:39:35,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:35,003 INFO L480 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-03-11 00:39:35,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:35,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-03-11 00:39:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:35,008 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:35,008 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:35,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-11 00:39:35,009 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1377984042, now seen corresponding path program 89 times [2021-03-11 00:39:35,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:35,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078139883] [2021-03-11 00:39:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:35,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078139883] [2021-03-11 00:39:35,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:35,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:35,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420612192] [2021-03-11 00:39:35,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:35,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:35,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:35,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:35,306 INFO L87 Difference]: Start difference. First operand 3606 states and 12075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:38,142 INFO L93 Difference]: Finished difference Result 5612 states and 19007 transitions. [2021-03-11 00:39:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:39:38,144 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:38,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:38,156 INFO L225 Difference]: With dead ends: 5612 [2021-03-11 00:39:38,157 INFO L226 Difference]: Without dead ends: 5569 [2021-03-11 00:39:38,157 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 1526.5ms TimeCoverageRelationStatistics Valid=279, Invalid=2801, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 00:39:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-03-11 00:39:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 3620. [2021-03-11 00:39:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3478861563967945) internal successors, (12116), 3619 states have internal predecessors, (12116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12116 transitions. [2021-03-11 00:39:38,240 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12116 transitions. Word has length 39 [2021-03-11 00:39:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:38,240 INFO L480 AbstractCegarLoop]: Abstraction has 3620 states and 12116 transitions. [2021-03-11 00:39:38,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12116 transitions. [2021-03-11 00:39:38,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:38,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:38,270 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:38,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-11 00:39:38,270 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:38,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1136384952, now seen corresponding path program 90 times [2021-03-11 00:39:38,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:38,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401664995] [2021-03-11 00:39:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:38,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401664995] [2021-03-11 00:39:38,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:38,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:38,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761451156] [2021-03-11 00:39:38,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:38,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:38,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:38,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:38,737 INFO L87 Difference]: Start difference. First operand 3620 states and 12116 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:43,347 INFO L93 Difference]: Finished difference Result 6473 states and 21937 transitions. [2021-03-11 00:39:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-11 00:39:43,348 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:43,359 INFO L225 Difference]: With dead ends: 6473 [2021-03-11 00:39:43,359 INFO L226 Difference]: Without dead ends: 6421 [2021-03-11 00:39:43,360 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 2331.7ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-03-11 00:39:43,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6421 states. [2021-03-11 00:39:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6421 to 3606. [2021-03-11 00:39:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.349514563106796) internal successors, (12075), 3605 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-03-11 00:39:43,428 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-03-11 00:39:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:43,428 INFO L480 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-03-11 00:39:43,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:43,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-03-11 00:39:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:43,433 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:43,433 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:43,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-11 00:39:43,433 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:43,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:43,434 INFO L82 PathProgramCache]: Analyzing trace with hash -459500472, now seen corresponding path program 91 times [2021-03-11 00:39:43,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:43,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685946092] [2021-03-11 00:39:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:43,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685946092] [2021-03-11 00:39:43,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:43,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:43,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929521405] [2021-03-11 00:39:43,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:43,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:43,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:43,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:43,714 INFO L87 Difference]: Start difference. First operand 3606 states and 12075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:45,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:45,936 INFO L93 Difference]: Finished difference Result 5417 states and 18181 transitions. [2021-03-11 00:39:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 00:39:45,938 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:45,950 INFO L225 Difference]: With dead ends: 5417 [2021-03-11 00:39:45,950 INFO L226 Difference]: Without dead ends: 5362 [2021-03-11 00:39:45,950 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1170.5ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:39:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-03-11 00:39:46,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 3614. [2021-03-11 00:39:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3613 states have (on average 3.3487406587323556) internal successors, (12099), 3613 states have internal predecessors, (12099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:46,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 12099 transitions. [2021-03-11 00:39:46,032 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 12099 transitions. Word has length 39 [2021-03-11 00:39:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:46,032 INFO L480 AbstractCegarLoop]: Abstraction has 3614 states and 12099 transitions. [2021-03-11 00:39:46,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 12099 transitions. [2021-03-11 00:39:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:46,038 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:46,038 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:46,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-11 00:39:46,038 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:46,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:46,039 INFO L82 PathProgramCache]: Analyzing trace with hash 713151750, now seen corresponding path program 92 times [2021-03-11 00:39:46,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:46,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607321404] [2021-03-11 00:39:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:46,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607321404] [2021-03-11 00:39:46,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:46,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:46,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129677985] [2021-03-11 00:39:46,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:46,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:46,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:46,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:46,533 INFO L87 Difference]: Start difference. First operand 3614 states and 12099 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:50,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:50,579 INFO L93 Difference]: Finished difference Result 6278 states and 21115 transitions. [2021-03-11 00:39:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-11 00:39:50,580 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:50,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:50,591 INFO L225 Difference]: With dead ends: 6278 [2021-03-11 00:39:50,591 INFO L226 Difference]: Without dead ends: 6218 [2021-03-11 00:39:50,592 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1942.4ms TimeCoverageRelationStatistics Valid=249, Invalid=2507, Unknown=0, NotChecked=0, Total=2756 [2021-03-11 00:39:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-03-11 00:39:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 3612. [2021-03-11 00:39:50,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3492107449459985) internal successors, (12094), 3611 states have internal predecessors, (12094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12094 transitions. [2021-03-11 00:39:50,659 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12094 transitions. Word has length 39 [2021-03-11 00:39:50,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:50,659 INFO L480 AbstractCegarLoop]: Abstraction has 3612 states and 12094 transitions. [2021-03-11 00:39:50,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12094 transitions. [2021-03-11 00:39:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:50,663 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:50,663 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:50,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-11 00:39:50,663 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:50,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1164251852, now seen corresponding path program 93 times [2021-03-11 00:39:50,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:50,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519837499] [2021-03-11 00:39:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:50,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519837499] [2021-03-11 00:39:50,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:50,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:50,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464324655] [2021-03-11 00:39:50,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:50,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:50,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:50,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:50,935 INFO L87 Difference]: Start difference. First operand 3612 states and 12094 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:53,113 INFO L93 Difference]: Finished difference Result 5378 states and 18115 transitions. [2021-03-11 00:39:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:39:53,115 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:53,127 INFO L225 Difference]: With dead ends: 5378 [2021-03-11 00:39:53,127 INFO L226 Difference]: Without dead ends: 5287 [2021-03-11 00:39:53,127 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1108.0ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:39:53,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2021-03-11 00:39:53,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 3612. [2021-03-11 00:39:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3475491553586263) internal successors, (12088), 3611 states have internal predecessors, (12088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12088 transitions. [2021-03-11 00:39:53,207 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12088 transitions. Word has length 39 [2021-03-11 00:39:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:53,207 INFO L480 AbstractCegarLoop]: Abstraction has 3612 states and 12088 transitions. [2021-03-11 00:39:53,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:53,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12088 transitions. [2021-03-11 00:39:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:53,213 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:53,213 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:53,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-11 00:39:53,214 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:53,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1628233238, now seen corresponding path program 94 times [2021-03-11 00:39:53,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:53,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135861012] [2021-03-11 00:39:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:53,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135861012] [2021-03-11 00:39:53,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:53,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:53,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451802627] [2021-03-11 00:39:53,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:53,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:53,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:53,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:53,723 INFO L87 Difference]: Start difference. First operand 3612 states and 12088 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:57,675 INFO L93 Difference]: Finished difference Result 6191 states and 20917 transitions. [2021-03-11 00:39:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 00:39:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:57,706 INFO L225 Difference]: With dead ends: 6191 [2021-03-11 00:39:57,706 INFO L226 Difference]: Without dead ends: 6075 [2021-03-11 00:39:57,706 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 1834.6ms TimeCoverageRelationStatistics Valid=228, Invalid=2322, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:39:57,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-03-11 00:39:57,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 3590. [2021-03-11 00:39:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 3.353859013652828) internal successors, (12037), 3589 states have internal predecessors, (12037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:57,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12037 transitions. [2021-03-11 00:39:57,765 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12037 transitions. Word has length 39 [2021-03-11 00:39:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:57,765 INFO L480 AbstractCegarLoop]: Abstraction has 3590 states and 12037 transitions. [2021-03-11 00:39:57,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12037 transitions. [2021-03-11 00:39:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:57,769 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:57,769 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:57,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-11 00:39:57,769 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:57,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2037500794, now seen corresponding path program 95 times [2021-03-11 00:39:57,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:57,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196646697] [2021-03-11 00:39:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:58,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196646697] [2021-03-11 00:39:58,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:58,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:58,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620409688] [2021-03-11 00:39:58,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:58,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:58,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:58,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:58,053 INFO L87 Difference]: Start difference. First operand 3590 states and 12037 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:39:59,349 INFO L93 Difference]: Finished difference Result 3901 states and 12905 transitions. [2021-03-11 00:39:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 00:39:59,350 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:39:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:39:59,356 INFO L225 Difference]: With dead ends: 3901 [2021-03-11 00:39:59,356 INFO L226 Difference]: Without dead ends: 3834 [2021-03-11 00:39:59,356 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 814.6ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 00:39:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2021-03-11 00:39:59,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3646. [2021-03-11 00:39:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.342935528120713) internal successors, (12185), 3645 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:39:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12185 transitions. [2021-03-11 00:39:59,400 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12185 transitions. Word has length 39 [2021-03-11 00:39:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:39:59,400 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12185 transitions. [2021-03-11 00:39:59,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:39:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12185 transitions. [2021-03-11 00:39:59,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:39:59,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:39:59,404 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:39:59,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-11 00:39:59,405 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:39:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:39:59,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2085323284, now seen corresponding path program 96 times [2021-03-11 00:39:59,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:39:59,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997851050] [2021-03-11 00:39:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:39:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:39:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:39:59,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997851050] [2021-03-11 00:39:59,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:39:59,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:39:59,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556753830] [2021-03-11 00:39:59,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:39:59,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:39:59,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:39:59,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:39:59,836 INFO L87 Difference]: Start difference. First operand 3646 states and 12185 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:40:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:02,743 INFO L93 Difference]: Finished difference Result 3889 states and 12865 transitions. [2021-03-11 00:40:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 00:40:02,745 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:40:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:02,752 INFO L225 Difference]: With dead ends: 3889 [2021-03-11 00:40:02,752 INFO L226 Difference]: Without dead ends: 3826 [2021-03-11 00:40:02,752 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1562.1ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 00:40:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-03-11 00:40:02,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3638. [2021-03-11 00:40:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.343689854275502) internal successors, (12161), 3637 states have internal predecessors, (12161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12161 transitions. [2021-03-11 00:40:02,820 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12161 transitions. Word has length 39 [2021-03-11 00:40:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:02,820 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12161 transitions. [2021-03-11 00:40:02,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:40:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12161 transitions. [2021-03-11 00:40:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:02,827 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:02,827 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:02,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-11 00:40:02,827 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:02,828 INFO L82 PathProgramCache]: Analyzing trace with hash 282489128, now seen corresponding path program 97 times [2021-03-11 00:40:02,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:02,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888779914] [2021-03-11 00:40:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:03,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888779914] [2021-03-11 00:40:03,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:03,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:40:03,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590292728] [2021-03-11 00:40:03,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:40:03,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:03,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:40:03,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:40:03,392 INFO L87 Difference]: Start difference. First operand 3638 states and 12161 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:40:05,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:05,084 INFO L93 Difference]: Finished difference Result 3889 states and 12857 transitions. [2021-03-11 00:40:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 00:40:05,085 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:40:05,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:05,092 INFO L225 Difference]: With dead ends: 3889 [2021-03-11 00:40:05,092 INFO L226 Difference]: Without dead ends: 3754 [2021-03-11 00:40:05,093 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1235.5ms TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 00:40:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2021-03-11 00:40:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3594. [2021-03-11 00:40:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.3523517951572503) internal successors, (12045), 3593 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12045 transitions. [2021-03-11 00:40:05,146 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12045 transitions. Word has length 39 [2021-03-11 00:40:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:05,146 INFO L480 AbstractCegarLoop]: Abstraction has 3594 states and 12045 transitions. [2021-03-11 00:40:05,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:40:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12045 transitions. [2021-03-11 00:40:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:05,151 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:05,151 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:05,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-11 00:40:05,151 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:05,151 INFO L82 PathProgramCache]: Analyzing trace with hash 861908364, now seen corresponding path program 98 times [2021-03-11 00:40:05,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:05,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936845687] [2021-03-11 00:40:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:05,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936845687] [2021-03-11 00:40:05,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:05,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:40:05,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893325605] [2021-03-11 00:40:05,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:40:05,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:05,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:40:05,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:40:05,451 INFO L87 Difference]: Start difference. First operand 3594 states and 12045 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:40:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:07,165 INFO L93 Difference]: Finished difference Result 3825 states and 12693 transitions. [2021-03-11 00:40:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-11 00:40:07,168 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:40:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:07,178 INFO L225 Difference]: With dead ends: 3825 [2021-03-11 00:40:07,179 INFO L226 Difference]: Without dead ends: 3758 [2021-03-11 00:40:07,179 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1029.6ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 00:40:07,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2021-03-11 00:40:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3650. [2021-03-11 00:40:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.341463414634146) internal successors, (12193), 3649 states have internal predecessors, (12193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:07,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12193 transitions. [2021-03-11 00:40:07,248 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12193 transitions. Word has length 39 [2021-03-11 00:40:07,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:07,248 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 12193 transitions. [2021-03-11 00:40:07,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:40:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12193 transitions. [2021-03-11 00:40:07,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:07,254 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:07,254 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:07,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-11 00:40:07,254 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:07,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:07,254 INFO L82 PathProgramCache]: Analyzing trace with hash 689765146, now seen corresponding path program 99 times [2021-03-11 00:40:07,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:07,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447173139] [2021-03-11 00:40:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:07,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447173139] [2021-03-11 00:40:07,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:07,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:40:07,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625756020] [2021-03-11 00:40:07,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:40:07,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:07,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:40:07,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:40:07,857 INFO L87 Difference]: Start difference. First operand 3650 states and 12193 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:40:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:10,391 INFO L93 Difference]: Finished difference Result 3813 states and 12653 transitions. [2021-03-11 00:40:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 00:40:10,394 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:40:10,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:10,402 INFO L225 Difference]: With dead ends: 3813 [2021-03-11 00:40:10,402 INFO L226 Difference]: Without dead ends: 3750 [2021-03-11 00:40:10,402 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1562.9ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 00:40:10,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-03-11 00:40:10,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3642. [2021-03-11 00:40:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3422136775611095) internal successors, (12169), 3641 states have internal predecessors, (12169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12169 transitions. [2021-03-11 00:40:10,499 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12169 transitions. Word has length 39 [2021-03-11 00:40:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:10,499 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12169 transitions. [2021-03-11 00:40:10,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:40:10,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12169 transitions. [2021-03-11 00:40:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:10,505 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:10,505 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:10,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-11 00:40:10,505 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:10,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1113069010, now seen corresponding path program 100 times [2021-03-11 00:40:10,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:10,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771029615] [2021-03-11 00:40:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:11,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771029615] [2021-03-11 00:40:11,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:11,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:40:11,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391976738] [2021-03-11 00:40:11,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:40:11,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:11,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:40:11,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:40:11,107 INFO L87 Difference]: Start difference. First operand 3642 states and 12169 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:40:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:13,185 INFO L93 Difference]: Finished difference Result 3813 states and 12645 transitions. [2021-03-11 00:40:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-11 00:40:13,186 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:40:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:13,193 INFO L225 Difference]: With dead ends: 3813 [2021-03-11 00:40:13,193 INFO L226 Difference]: Without dead ends: 3662 [2021-03-11 00:40:13,193 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1333.5ms TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 00:40:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2021-03-11 00:40:13,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3582. [2021-03-11 00:40:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3557665456576373) internal successors, (12017), 3581 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:13,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12017 transitions. [2021-03-11 00:40:13,249 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12017 transitions. Word has length 39 [2021-03-11 00:40:13,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:13,249 INFO L480 AbstractCegarLoop]: Abstraction has 3582 states and 12017 transitions. [2021-03-11 00:40:13,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:40:13,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12017 transitions. [2021-03-11 00:40:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:13,254 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:13,254 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:13,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-11 00:40:13,254 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:13,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:13,254 INFO L82 PathProgramCache]: Analyzing trace with hash 318375130, now seen corresponding path program 101 times [2021-03-11 00:40:13,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:13,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393017325] [2021-03-11 00:40:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:13,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393017325] [2021-03-11 00:40:13,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:13,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:13,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286466159] [2021-03-11 00:40:13,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:13,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:13,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:13,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:13,547 INFO L87 Difference]: Start difference. First operand 3582 states and 12017 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:16,487 INFO L93 Difference]: Finished difference Result 4325 states and 14372 transitions. [2021-03-11 00:40:16,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 00:40:16,489 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:16,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:16,498 INFO L225 Difference]: With dead ends: 4325 [2021-03-11 00:40:16,499 INFO L226 Difference]: Without dead ends: 4258 [2021-03-11 00:40:16,499 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 1563.4ms TimeCoverageRelationStatistics Valid=243, Invalid=2207, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 00:40:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2021-03-11 00:40:16,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 3658. [2021-03-11 00:40:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3500136724090783) internal successors, (12251), 3657 states have internal predecessors, (12251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12251 transitions. [2021-03-11 00:40:16,572 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12251 transitions. Word has length 39 [2021-03-11 00:40:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:16,572 INFO L480 AbstractCegarLoop]: Abstraction has 3658 states and 12251 transitions. [2021-03-11 00:40:16,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12251 transitions. [2021-03-11 00:40:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:16,578 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:16,579 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:16,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-11 00:40:16,579 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:16,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1401240840, now seen corresponding path program 102 times [2021-03-11 00:40:16,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:16,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889665255] [2021-03-11 00:40:16,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:17,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889665255] [2021-03-11 00:40:17,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:17,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:17,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664179235] [2021-03-11 00:40:17,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:17,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:17,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:17,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:17,144 INFO L87 Difference]: Start difference. First operand 3658 states and 12251 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:21,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:21,586 INFO L93 Difference]: Finished difference Result 4462 states and 14729 transitions. [2021-03-11 00:40:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-11 00:40:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:21,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:21,595 INFO L225 Difference]: With dead ends: 4462 [2021-03-11 00:40:21,595 INFO L226 Difference]: Without dead ends: 4419 [2021-03-11 00:40:21,596 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 2609.7ms TimeCoverageRelationStatistics Valid=323, Invalid=3217, Unknown=0, NotChecked=0, Total=3540 [2021-03-11 00:40:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2021-03-11 00:40:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 3664. [2021-03-11 00:40:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3480753480753482) internal successors, (12264), 3663 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12264 transitions. [2021-03-11 00:40:21,651 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12264 transitions. Word has length 39 [2021-03-11 00:40:21,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:21,651 INFO L480 AbstractCegarLoop]: Abstraction has 3664 states and 12264 transitions. [2021-03-11 00:40:21,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12264 transitions. [2021-03-11 00:40:21,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:21,656 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:21,656 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:21,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-11 00:40:21,656 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:21,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:21,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1113128154, now seen corresponding path program 103 times [2021-03-11 00:40:21,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:21,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323565100] [2021-03-11 00:40:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:21,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323565100] [2021-03-11 00:40:21,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:21,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:21,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153242855] [2021-03-11 00:40:21,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:21,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:21,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:21,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:21,964 INFO L87 Difference]: Start difference. First operand 3664 states and 12264 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:26,529 INFO L93 Difference]: Finished difference Result 4393 states and 14549 transitions. [2021-03-11 00:40:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-11 00:40:26,531 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:26,540 INFO L225 Difference]: With dead ends: 4393 [2021-03-11 00:40:26,540 INFO L226 Difference]: Without dead ends: 4329 [2021-03-11 00:40:26,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 2524.0ms TimeCoverageRelationStatistics Valid=305, Invalid=3001, Unknown=0, NotChecked=0, Total=3306 [2021-03-11 00:40:26,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2021-03-11 00:40:26,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 3646. [2021-03-11 00:40:26,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.35281207133059) internal successors, (12221), 3645 states have internal predecessors, (12221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12221 transitions. [2021-03-11 00:40:26,609 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12221 transitions. Word has length 39 [2021-03-11 00:40:26,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:26,609 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12221 transitions. [2021-03-11 00:40:26,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12221 transitions. [2021-03-11 00:40:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:26,614 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:26,615 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:26,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-11 00:40:26,615 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:26,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:26,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1733562554, now seen corresponding path program 104 times [2021-03-11 00:40:26,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:26,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050260386] [2021-03-11 00:40:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:27,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050260386] [2021-03-11 00:40:27,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:27,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:27,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140399213] [2021-03-11 00:40:27,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:27,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:27,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:27,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:27,151 INFO L87 Difference]: Start difference. First operand 3646 states and 12221 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:29,202 INFO L93 Difference]: Finished difference Result 4273 states and 14194 transitions. [2021-03-11 00:40:29,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:40:29,203 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:29,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:29,210 INFO L225 Difference]: With dead ends: 4273 [2021-03-11 00:40:29,210 INFO L226 Difference]: Without dead ends: 4206 [2021-03-11 00:40:29,210 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1339.2ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 00:40:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2021-03-11 00:40:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 3654. [2021-03-11 00:40:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3498494388174103) internal successors, (12237), 3653 states have internal predecessors, (12237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12237 transitions. [2021-03-11 00:40:29,262 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12237 transitions. Word has length 39 [2021-03-11 00:40:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:29,262 INFO L480 AbstractCegarLoop]: Abstraction has 3654 states and 12237 transitions. [2021-03-11 00:40:29,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12237 transitions. [2021-03-11 00:40:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:29,266 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:29,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:29,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-11 00:40:29,266 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:29,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:29,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1602967706, now seen corresponding path program 105 times [2021-03-11 00:40:29,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:29,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120055516] [2021-03-11 00:40:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:29,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120055516] [2021-03-11 00:40:29,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:29,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:29,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375978302] [2021-03-11 00:40:29,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:29,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:29,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:29,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:29,555 INFO L87 Difference]: Start difference. First operand 3654 states and 12237 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:33,412 INFO L93 Difference]: Finished difference Result 4261 states and 14154 transitions. [2021-03-11 00:40:33,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 00:40:33,415 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:33,424 INFO L225 Difference]: With dead ends: 4261 [2021-03-11 00:40:33,425 INFO L226 Difference]: Without dead ends: 4198 [2021-03-11 00:40:33,425 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1857.9ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:40:33,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2021-03-11 00:40:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 3646. [2021-03-11 00:40:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3517146776406035) internal successors, (12217), 3645 states have internal predecessors, (12217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12217 transitions. [2021-03-11 00:40:33,496 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12217 transitions. Word has length 39 [2021-03-11 00:40:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:33,496 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12217 transitions. [2021-03-11 00:40:33,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12217 transitions. [2021-03-11 00:40:33,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:33,502 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:33,502 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:33,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-11 00:40:33,502 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:33,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1467289114, now seen corresponding path program 106 times [2021-03-11 00:40:33,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:33,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382680273] [2021-03-11 00:40:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:34,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382680273] [2021-03-11 00:40:34,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:34,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:34,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375195600] [2021-03-11 00:40:34,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:34,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:34,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:34,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:34,082 INFO L87 Difference]: Start difference. First operand 3646 states and 12217 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:37,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:37,030 INFO L93 Difference]: Finished difference Result 4416 states and 14517 transitions. [2021-03-11 00:40:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:40:37,031 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:37,039 INFO L225 Difference]: With dead ends: 4416 [2021-03-11 00:40:37,039 INFO L226 Difference]: Without dead ends: 4373 [2021-03-11 00:40:37,040 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1982.5ms TimeCoverageRelationStatistics Valid=294, Invalid=2786, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 00:40:37,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2021-03-11 00:40:37,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 3654. [2021-03-11 00:40:37,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3498494388174103) internal successors, (12237), 3653 states have internal predecessors, (12237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12237 transitions. [2021-03-11 00:40:37,102 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12237 transitions. Word has length 39 [2021-03-11 00:40:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:37,102 INFO L480 AbstractCegarLoop]: Abstraction has 3654 states and 12237 transitions. [2021-03-11 00:40:37,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12237 transitions. [2021-03-11 00:40:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:37,107 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:37,107 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:37,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-11 00:40:37,107 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:37,107 INFO L82 PathProgramCache]: Analyzing trace with hash -313309188, now seen corresponding path program 107 times [2021-03-11 00:40:37,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:37,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958428857] [2021-03-11 00:40:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:37,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958428857] [2021-03-11 00:40:37,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:37,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:37,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938343434] [2021-03-11 00:40:37,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:37,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:37,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:37,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:37,693 INFO L87 Difference]: Start difference. First operand 3654 states and 12237 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:42,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:42,572 INFO L93 Difference]: Finished difference Result 4404 states and 14479 transitions. [2021-03-11 00:40:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-11 00:40:42,573 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:42,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:42,581 INFO L225 Difference]: With dead ends: 4404 [2021-03-11 00:40:42,581 INFO L226 Difference]: Without dead ends: 4352 [2021-03-11 00:40:42,581 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 2802.8ms TimeCoverageRelationStatistics Valid=286, Invalid=2684, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 00:40:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2021-03-11 00:40:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 3646. [2021-03-11 00:40:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3517146776406035) internal successors, (12217), 3645 states have internal predecessors, (12217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12217 transitions. [2021-03-11 00:40:42,640 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12217 transitions. Word has length 39 [2021-03-11 00:40:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:42,641 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12217 transitions. [2021-03-11 00:40:42,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12217 transitions. [2021-03-11 00:40:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:42,646 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:42,646 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:42,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-11 00:40:42,646 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:42,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:42,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1909194612, now seen corresponding path program 108 times [2021-03-11 00:40:42,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:42,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545637056] [2021-03-11 00:40:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:42,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545637056] [2021-03-11 00:40:42,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:42,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:42,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724032318] [2021-03-11 00:40:42,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:42,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:42,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:42,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:42,975 INFO L87 Difference]: Start difference. First operand 3646 states and 12217 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:45,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:45,498 INFO L93 Difference]: Finished difference Result 4381 states and 14402 transitions. [2021-03-11 00:40:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 00:40:45,501 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:45,510 INFO L225 Difference]: With dead ends: 4381 [2021-03-11 00:40:45,510 INFO L226 Difference]: Without dead ends: 4326 [2021-03-11 00:40:45,511 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1487.4ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:40:45,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-03-11 00:40:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3648. [2021-03-11 00:40:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.3506992048258843) internal successors, (12220), 3647 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:45,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12220 transitions. [2021-03-11 00:40:45,585 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12220 transitions. Word has length 39 [2021-03-11 00:40:45,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:45,585 INFO L480 AbstractCegarLoop]: Abstraction has 3648 states and 12220 transitions. [2021-03-11 00:40:45,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:45,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12220 transitions. [2021-03-11 00:40:45,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:45,592 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:45,592 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:45,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-11 00:40:45,592 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:45,592 INFO L82 PathProgramCache]: Analyzing trace with hash -736542390, now seen corresponding path program 109 times [2021-03-11 00:40:45,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:45,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303850637] [2021-03-11 00:40:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:46,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303850637] [2021-03-11 00:40:46,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:46,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:46,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998076400] [2021-03-11 00:40:46,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:46,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:46,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:46,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:46,267 INFO L87 Difference]: Start difference. First operand 3648 states and 12220 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:50,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:50,285 INFO L93 Difference]: Finished difference Result 4316 states and 14250 transitions. [2021-03-11 00:40:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:40:50,286 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:50,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:50,293 INFO L225 Difference]: With dead ends: 4316 [2021-03-11 00:40:50,293 INFO L226 Difference]: Without dead ends: 4270 [2021-03-11 00:40:50,293 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 2197.8ms TimeCoverageRelationStatistics Valid=208, Invalid=1772, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 00:40:50,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-03-11 00:40:50,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3652. [2021-03-11 00:40:50,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3492193919474116) internal successors, (12228), 3651 states have internal predecessors, (12228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12228 transitions. [2021-03-11 00:40:50,352 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12228 transitions. Word has length 39 [2021-03-11 00:40:50,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:50,352 INFO L480 AbstractCegarLoop]: Abstraction has 3652 states and 12228 transitions. [2021-03-11 00:40:50,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12228 transitions. [2021-03-11 00:40:50,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:50,357 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:50,358 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:50,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-11 00:40:50,358 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:50,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:50,358 INFO L82 PathProgramCache]: Analyzing trace with hash -984008552, now seen corresponding path program 110 times [2021-03-11 00:40:50,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:50,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786301815] [2021-03-11 00:40:50,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:50,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786301815] [2021-03-11 00:40:50,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:50,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:50,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955249820] [2021-03-11 00:40:50,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:50,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:50,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:50,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:50,710 INFO L87 Difference]: Start difference. First operand 3652 states and 12228 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:54,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:54,274 INFO L93 Difference]: Finished difference Result 4387 states and 14459 transitions. [2021-03-11 00:40:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 00:40:54,276 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:54,285 INFO L225 Difference]: With dead ends: 4387 [2021-03-11 00:40:54,285 INFO L226 Difference]: Without dead ends: 4323 [2021-03-11 00:40:54,286 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 2153.3ms TimeCoverageRelationStatistics Valid=284, Invalid=2578, Unknown=0, NotChecked=0, Total=2862 [2021-03-11 00:40:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2021-03-11 00:40:54,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 3678. [2021-03-11 00:40:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3677 states have (on average 3.349197715528964) internal successors, (12315), 3677 states have internal predecessors, (12315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 12315 transitions. [2021-03-11 00:40:54,362 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 12315 transitions. Word has length 39 [2021-03-11 00:40:54,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:54,362 INFO L480 AbstractCegarLoop]: Abstraction has 3678 states and 12315 transitions. [2021-03-11 00:40:54,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:54,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 12315 transitions. [2021-03-11 00:40:54,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:54,368 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:54,369 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:54,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-11 00:40:54,369 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:54,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:54,369 INFO L82 PathProgramCache]: Analyzing trace with hash 554866970, now seen corresponding path program 111 times [2021-03-11 00:40:54,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:54,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944330865] [2021-03-11 00:40:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:54,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:54,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944330865] [2021-03-11 00:40:54,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:54,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:54,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504784711] [2021-03-11 00:40:54,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:54,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:54,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:54,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:54,986 INFO L87 Difference]: Start difference. First operand 3678 states and 12315 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:40:59,012 INFO L93 Difference]: Finished difference Result 4269 states and 14200 transitions. [2021-03-11 00:40:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 00:40:59,015 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:40:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:40:59,022 INFO L225 Difference]: With dead ends: 4269 [2021-03-11 00:40:59,022 INFO L226 Difference]: Without dead ends: 4202 [2021-03-11 00:40:59,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2040.3ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 00:40:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-03-11 00:40:59,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3718. [2021-03-11 00:40:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3718 states, 3717 states have (on average 3.3422114608555287) internal successors, (12423), 3717 states have internal predecessors, (12423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:40:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3718 states to 3718 states and 12423 transitions. [2021-03-11 00:40:59,093 INFO L78 Accepts]: Start accepts. Automaton has 3718 states and 12423 transitions. Word has length 39 [2021-03-11 00:40:59,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:40:59,093 INFO L480 AbstractCegarLoop]: Abstraction has 3718 states and 12423 transitions. [2021-03-11 00:40:59,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:40:59,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3718 states and 12423 transitions. [2021-03-11 00:40:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:40:59,099 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:40:59,099 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:40:59,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-11 00:40:59,099 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:40:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:40:59,099 INFO L82 PathProgramCache]: Analyzing trace with hash 424272122, now seen corresponding path program 112 times [2021-03-11 00:40:59,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:40:59,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365165590] [2021-03-11 00:40:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:40:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:40:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:40:59,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365165590] [2021-03-11 00:40:59,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:40:59,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:40:59,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522096744] [2021-03-11 00:40:59,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:40:59,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:40:59,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:40:59,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:40:59,626 INFO L87 Difference]: Start difference. First operand 3718 states and 12423 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:01,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:01,921 INFO L93 Difference]: Finished difference Result 4257 states and 14160 transitions. [2021-03-11 00:41:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:41:01,923 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:01,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:01,930 INFO L225 Difference]: With dead ends: 4257 [2021-03-11 00:41:01,930 INFO L226 Difference]: Without dead ends: 4194 [2021-03-11 00:41:01,930 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1373.9ms TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:41:01,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2021-03-11 00:41:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 3710. [2021-03-11 00:41:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3709 states have (on average 3.3429495820976003) internal successors, (12399), 3709 states have internal predecessors, (12399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 12399 transitions. [2021-03-11 00:41:01,978 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 12399 transitions. Word has length 39 [2021-03-11 00:41:01,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:01,978 INFO L480 AbstractCegarLoop]: Abstraction has 3710 states and 12399 transitions. [2021-03-11 00:41:01,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:01,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 12399 transitions. [2021-03-11 00:41:01,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:01,983 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:01,983 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:01,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-11 00:41:01,983 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:01,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:01,983 INFO L82 PathProgramCache]: Analyzing trace with hash -105628326, now seen corresponding path program 113 times [2021-03-11 00:41:01,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:01,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430643520] [2021-03-11 00:41:01,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:02,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430643520] [2021-03-11 00:41:02,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:02,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:02,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295387954] [2021-03-11 00:41:02,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:02,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:02,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:02,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:02,520 INFO L87 Difference]: Start difference. First operand 3710 states and 12399 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:06,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:06,773 INFO L93 Difference]: Finished difference Result 4269 states and 14184 transitions. [2021-03-11 00:41:06,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:41:06,776 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:06,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:06,785 INFO L225 Difference]: With dead ends: 4269 [2021-03-11 00:41:06,785 INFO L226 Difference]: Without dead ends: 4130 [2021-03-11 00:41:06,785 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 2108.8ms TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:41:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-03-11 00:41:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3662. [2021-03-11 00:41:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.347446052990986) internal successors, (12255), 3661 states have internal predecessors, (12255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12255 transitions. [2021-03-11 00:41:06,855 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12255 transitions. Word has length 39 [2021-03-11 00:41:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:06,855 INFO L480 AbstractCegarLoop]: Abstraction has 3662 states and 12255 transitions. [2021-03-11 00:41:06,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12255 transitions. [2021-03-11 00:41:06,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:06,861 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:06,862 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:06,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-11 00:41:06,862 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:06,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:06,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1578866516, now seen corresponding path program 114 times [2021-03-11 00:41:06,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:06,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138005642] [2021-03-11 00:41:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:07,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138005642] [2021-03-11 00:41:07,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:07,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:41:07,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81618478] [2021-03-11 00:41:07,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:41:07,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:07,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:41:07,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:41:07,464 INFO L87 Difference]: Start difference. First operand 3662 states and 12255 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:41:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:10,044 INFO L93 Difference]: Finished difference Result 4173 states and 13890 transitions. [2021-03-11 00:41:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 00:41:10,045 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:41:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:10,052 INFO L225 Difference]: With dead ends: 4173 [2021-03-11 00:41:10,053 INFO L226 Difference]: Without dead ends: 4094 [2021-03-11 00:41:10,053 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1681.3ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 00:41:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2021-03-11 00:41:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3686. [2021-03-11 00:41:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 3.343012211668928) internal successors, (12319), 3685 states have internal predecessors, (12319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 12319 transitions. [2021-03-11 00:41:10,105 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 12319 transitions. Word has length 39 [2021-03-11 00:41:10,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:10,105 INFO L480 AbstractCegarLoop]: Abstraction has 3686 states and 12319 transitions. [2021-03-11 00:41:10,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:41:10,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 12319 transitions. [2021-03-11 00:41:10,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:10,110 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:10,110 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:10,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-11 00:41:10,110 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:10,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:10,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1192929108, now seen corresponding path program 115 times [2021-03-11 00:41:10,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:10,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386254440] [2021-03-11 00:41:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:10,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386254440] [2021-03-11 00:41:10,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:10,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:41:10,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670932933] [2021-03-11 00:41:10,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:41:10,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:41:10,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:41:10,407 INFO L87 Difference]: Start difference. First operand 3686 states and 12319 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:41:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:15,454 INFO L93 Difference]: Finished difference Result 4225 states and 14028 transitions. [2021-03-11 00:41:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 00:41:15,456 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:41:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:15,463 INFO L225 Difference]: With dead ends: 4225 [2021-03-11 00:41:15,463 INFO L226 Difference]: Without dead ends: 4095 [2021-03-11 00:41:15,464 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 2644.9ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-03-11 00:41:15,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2021-03-11 00:41:15,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 3662. [2021-03-11 00:41:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.345260857689156) internal successors, (12247), 3661 states have internal predecessors, (12247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12247 transitions. [2021-03-11 00:41:15,522 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12247 transitions. Word has length 39 [2021-03-11 00:41:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:15,522 INFO L480 AbstractCegarLoop]: Abstraction has 3662 states and 12247 transitions. [2021-03-11 00:41:15,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:41:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12247 transitions. [2021-03-11 00:41:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:15,527 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:15,527 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:15,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-11 00:41:15,527 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:15,528 INFO L82 PathProgramCache]: Analyzing trace with hash 645022744, now seen corresponding path program 116 times [2021-03-11 00:41:15,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:15,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768684240] [2021-03-11 00:41:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:15,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768684240] [2021-03-11 00:41:15,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:15,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:15,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870146498] [2021-03-11 00:41:15,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:15,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:15,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:15,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:15,872 INFO L87 Difference]: Start difference. First operand 3662 states and 12247 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:18,106 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2021-03-11 00:41:19,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:19,278 INFO L93 Difference]: Finished difference Result 4187 states and 13913 transitions. [2021-03-11 00:41:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 00:41:19,281 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:19,290 INFO L225 Difference]: With dead ends: 4187 [2021-03-11 00:41:19,290 INFO L226 Difference]: Without dead ends: 4120 [2021-03-11 00:41:19,291 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 1968.5ms TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 00:41:19,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2021-03-11 00:41:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 3662. [2021-03-11 00:41:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.341983064736411) internal successors, (12235), 3661 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:19,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-03-11 00:41:19,365 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-03-11 00:41:19,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:19,365 INFO L480 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-03-11 00:41:19,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-03-11 00:41:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:19,371 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:19,371 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:19,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-11 00:41:19,371 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1074593226, now seen corresponding path program 117 times [2021-03-11 00:41:19,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:19,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670854667] [2021-03-11 00:41:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:20,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670854667] [2021-03-11 00:41:20,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:20,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:20,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719991909] [2021-03-11 00:41:20,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:20,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:20,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:20,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:20,078 INFO L87 Difference]: Start difference. First operand 3662 states and 12235 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:24,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:24,511 INFO L93 Difference]: Finished difference Result 4276 states and 14159 transitions. [2021-03-11 00:41:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 00:41:24,515 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:24,524 INFO L225 Difference]: With dead ends: 4276 [2021-03-11 00:41:24,524 INFO L226 Difference]: Without dead ends: 4215 [2021-03-11 00:41:24,524 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 2917.7ms TimeCoverageRelationStatistics Valid=352, Invalid=3554, Unknown=0, NotChecked=0, Total=3906 [2021-03-11 00:41:24,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-03-11 00:41:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 3650. [2021-03-11 00:41:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.344751986845711) internal successors, (12205), 3649 states have internal predecessors, (12205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12205 transitions. [2021-03-11 00:41:24,598 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12205 transitions. Word has length 39 [2021-03-11 00:41:24,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:24,598 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 12205 transitions. [2021-03-11 00:41:24,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:24,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12205 transitions. [2021-03-11 00:41:24,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:24,604 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:24,604 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:24,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-11 00:41:24,604 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:24,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:24,605 INFO L82 PathProgramCache]: Analyzing trace with hash 2060210168, now seen corresponding path program 118 times [2021-03-11 00:41:24,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:24,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223985173] [2021-03-11 00:41:24,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:25,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223985173] [2021-03-11 00:41:25,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:25,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:25,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433176236] [2021-03-11 00:41:25,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:25,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:25,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:25,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:25,318 INFO L87 Difference]: Start difference. First operand 3650 states and 12205 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:28,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:28,395 INFO L93 Difference]: Finished difference Result 4073 states and 13548 transitions. [2021-03-11 00:41:28,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 00:41:28,397 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:28,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:28,403 INFO L225 Difference]: With dead ends: 4073 [2021-03-11 00:41:28,403 INFO L226 Difference]: Without dead ends: 4006 [2021-03-11 00:41:28,404 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1915.9ms TimeCoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:41:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2021-03-11 00:41:28,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 3658. [2021-03-11 00:41:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3418102269619907) internal successors, (12221), 3657 states have internal predecessors, (12221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12221 transitions. [2021-03-11 00:41:28,455 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12221 transitions. Word has length 39 [2021-03-11 00:41:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:28,455 INFO L480 AbstractCegarLoop]: Abstraction has 3658 states and 12221 transitions. [2021-03-11 00:41:28,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:28,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12221 transitions. [2021-03-11 00:41:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:28,460 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:28,460 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:28,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-11 00:41:28,460 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:28,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:28,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1929615320, now seen corresponding path program 119 times [2021-03-11 00:41:28,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:28,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677652556] [2021-03-11 00:41:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:28,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677652556] [2021-03-11 00:41:28,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:28,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:28,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729595625] [2021-03-11 00:41:28,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:28,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:28,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:28,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:28,811 INFO L87 Difference]: Start difference. First operand 3658 states and 12221 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:32,550 INFO L93 Difference]: Finished difference Result 4061 states and 13508 transitions. [2021-03-11 00:41:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:41:32,552 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:32,559 INFO L225 Difference]: With dead ends: 4061 [2021-03-11 00:41:32,559 INFO L226 Difference]: Without dead ends: 3998 [2021-03-11 00:41:32,560 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 1932.7ms TimeCoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:41:32,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-03-11 00:41:32,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3650. [2021-03-11 00:41:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3436557961085227) internal successors, (12201), 3649 states have internal predecessors, (12201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12201 transitions. [2021-03-11 00:41:32,610 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12201 transitions. Word has length 39 [2021-03-11 00:41:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:32,610 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 12201 transitions. [2021-03-11 00:41:32,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:32,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12201 transitions. [2021-03-11 00:41:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:32,614 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:32,615 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:32,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-11 00:41:32,615 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:32,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:32,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1793936728, now seen corresponding path program 120 times [2021-03-11 00:41:32,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:32,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430301732] [2021-03-11 00:41:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:33,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430301732] [2021-03-11 00:41:33,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:33,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:33,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378988502] [2021-03-11 00:41:33,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:33,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:33,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:33,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:33,007 INFO L87 Difference]: Start difference. First operand 3650 states and 12201 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:37,382 INFO L93 Difference]: Finished difference Result 4168 states and 13766 transitions. [2021-03-11 00:41:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:41:37,384 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:37,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:37,391 INFO L225 Difference]: With dead ends: 4168 [2021-03-11 00:41:37,391 INFO L226 Difference]: Without dead ends: 4119 [2021-03-11 00:41:37,392 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 2562.9ms TimeCoverageRelationStatistics Valid=305, Invalid=2887, Unknown=0, NotChecked=0, Total=3192 [2021-03-11 00:41:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-03-11 00:41:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 3644. [2021-03-11 00:41:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.3450452923414766) internal successors, (12186), 3643 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12186 transitions. [2021-03-11 00:41:37,448 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12186 transitions. Word has length 39 [2021-03-11 00:41:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:37,448 INFO L480 AbstractCegarLoop]: Abstraction has 3644 states and 12186 transitions. [2021-03-11 00:41:37,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12186 transitions. [2021-03-11 00:41:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:37,452 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:37,452 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:37,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-11 00:41:37,452 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:37,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:37,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1582546998, now seen corresponding path program 121 times [2021-03-11 00:41:37,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:37,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024338356] [2021-03-11 00:41:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:37,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024338356] [2021-03-11 00:41:37,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:37,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:37,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499207632] [2021-03-11 00:41:37,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:37,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:37,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:37,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:37,813 INFO L87 Difference]: Start difference. First operand 3644 states and 12186 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:41,355 INFO L93 Difference]: Finished difference Result 4095 states and 13578 transitions. [2021-03-11 00:41:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:41:41,356 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:41,363 INFO L225 Difference]: With dead ends: 4095 [2021-03-11 00:41:41,363 INFO L226 Difference]: Without dead ends: 4040 [2021-03-11 00:41:41,363 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 2097.6ms TimeCoverageRelationStatistics Valid=231, Invalid=2025, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:41:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-03-11 00:41:41,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3644. [2021-03-11 00:41:41,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.34449629426297) internal successors, (12184), 3643 states have internal predecessors, (12184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12184 transitions. [2021-03-11 00:41:41,415 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12184 transitions. Word has length 39 [2021-03-11 00:41:41,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:41,415 INFO L480 AbstractCegarLoop]: Abstraction has 3644 states and 12184 transitions. [2021-03-11 00:41:41,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12184 transitions. [2021-03-11 00:41:41,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:41,419 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:41,419 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:41,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-11 00:41:41,420 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:41,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:41,420 INFO L82 PathProgramCache]: Analyzing trace with hash -409894776, now seen corresponding path program 122 times [2021-03-11 00:41:41,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:41,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093298561] [2021-03-11 00:41:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:41,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093298561] [2021-03-11 00:41:41,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:41,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:41,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244375424] [2021-03-11 00:41:41,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:41,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:41,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:41,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:41,772 INFO L87 Difference]: Start difference. First operand 3644 states and 12184 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:45,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:45,043 INFO L93 Difference]: Finished difference Result 4038 states and 13446 transitions. [2021-03-11 00:41:45,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:41:45,047 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:45,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:45,055 INFO L225 Difference]: With dead ends: 4038 [2021-03-11 00:41:45,055 INFO L226 Difference]: Without dead ends: 3982 [2021-03-11 00:41:45,056 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1873.7ms TimeCoverageRelationStatistics Valid=217, Invalid=1853, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:41:45,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-03-11 00:41:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3634. [2021-03-11 00:41:45,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3479218276906137) internal successors, (12163), 3633 states have internal predecessors, (12163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:45,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12163 transitions. [2021-03-11 00:41:45,125 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12163 transitions. Word has length 39 [2021-03-11 00:41:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:45,125 INFO L480 AbstractCegarLoop]: Abstraction has 3634 states and 12163 transitions. [2021-03-11 00:41:45,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12163 transitions. [2021-03-11 00:41:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:45,131 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:45,131 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:45,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-11 00:41:45,132 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:45,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1832153546, now seen corresponding path program 123 times [2021-03-11 00:41:45,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:45,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138961700] [2021-03-11 00:41:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:45,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138961700] [2021-03-11 00:41:45,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:45,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:45,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058532031] [2021-03-11 00:41:45,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:45,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:45,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:45,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:45,544 INFO L87 Difference]: Start difference. First operand 3634 states and 12163 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:50,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:50,396 INFO L93 Difference]: Finished difference Result 4309 states and 14202 transitions. [2021-03-11 00:41:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-11 00:41:50,397 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:50,405 INFO L225 Difference]: With dead ends: 4309 [2021-03-11 00:41:50,405 INFO L226 Difference]: Without dead ends: 4172 [2021-03-11 00:41:50,406 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 2774.4ms TimeCoverageRelationStatistics Valid=314, Invalid=3226, Unknown=0, NotChecked=0, Total=3540 [2021-03-11 00:41:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-11 00:41:50,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3638. [2021-03-11 00:41:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346989276876547) internal successors, (12173), 3637 states have internal predecessors, (12173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12173 transitions. [2021-03-11 00:41:50,457 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12173 transitions. Word has length 39 [2021-03-11 00:41:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:50,457 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12173 transitions. [2021-03-11 00:41:50,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12173 transitions. [2021-03-11 00:41:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:50,461 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:50,461 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:50,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-11 00:41:50,461 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:50,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:50,461 INFO L82 PathProgramCache]: Analyzing trace with hash 337262646, now seen corresponding path program 124 times [2021-03-11 00:41:50,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:50,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499304429] [2021-03-11 00:41:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:50,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499304429] [2021-03-11 00:41:50,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:50,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:50,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375630458] [2021-03-11 00:41:50,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:50,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:50,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:50,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:50,878 INFO L87 Difference]: Start difference. First operand 3638 states and 12173 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:55,449 INFO L93 Difference]: Finished difference Result 4287 states and 14068 transitions. [2021-03-11 00:41:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:41:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:55,458 INFO L225 Difference]: With dead ends: 4287 [2021-03-11 00:41:55,458 INFO L226 Difference]: Without dead ends: 4223 [2021-03-11 00:41:55,459 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 2625.7ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-03-11 00:41:55,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-03-11 00:41:55,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3638. [2021-03-11 00:41:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346989276876547) internal successors, (12173), 3637 states have internal predecessors, (12173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12173 transitions. [2021-03-11 00:41:55,513 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12173 transitions. Word has length 39 [2021-03-11 00:41:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:55,513 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12173 transitions. [2021-03-11 00:41:55,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12173 transitions. [2021-03-11 00:41:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:55,518 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:55,518 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:55,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-11 00:41:55,518 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:55,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1255746216, now seen corresponding path program 125 times [2021-03-11 00:41:55,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:55,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95116859] [2021-03-11 00:41:55,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:41:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:41:55,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95116859] [2021-03-11 00:41:55,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:41:55,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:41:55,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070179751] [2021-03-11 00:41:55,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:41:55,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:41:55,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:41:55,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:41:55,929 INFO L87 Difference]: Start difference. First operand 3638 states and 12173 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:41:59,840 INFO L93 Difference]: Finished difference Result 4192 states and 13816 transitions. [2021-03-11 00:41:59,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 00:41:59,842 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:41:59,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:41:59,850 INFO L225 Difference]: With dead ends: 4192 [2021-03-11 00:41:59,850 INFO L226 Difference]: Without dead ends: 4137 [2021-03-11 00:41:59,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1984.6ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:41:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2021-03-11 00:41:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3640. [2021-03-11 00:41:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.3459741687276723) internal successors, (12176), 3639 states have internal predecessors, (12176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:41:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12176 transitions. [2021-03-11 00:41:59,910 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12176 transitions. Word has length 39 [2021-03-11 00:41:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:41:59,910 INFO L480 AbstractCegarLoop]: Abstraction has 3640 states and 12176 transitions. [2021-03-11 00:41:59,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:41:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12176 transitions. [2021-03-11 00:41:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:41:59,916 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:41:59,916 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:41:59,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-11 00:41:59,916 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:41:59,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:41:59,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1866568858, now seen corresponding path program 126 times [2021-03-11 00:41:59,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:41:59,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458614096] [2021-03-11 00:41:59,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:41:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:00,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458614096] [2021-03-11 00:42:00,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:00,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:42:00,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540160793] [2021-03-11 00:42:00,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:42:00,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:00,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:42:00,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:42:00,319 INFO L87 Difference]: Start difference. First operand 3640 states and 12176 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:04,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:04,285 INFO L93 Difference]: Finished difference Result 4162 states and 13755 transitions. [2021-03-11 00:42:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:42:04,287 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:42:04,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:04,294 INFO L225 Difference]: With dead ends: 4162 [2021-03-11 00:42:04,294 INFO L226 Difference]: Without dead ends: 4102 [2021-03-11 00:42:04,295 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 2222.8ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:42:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-03-11 00:42:04,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 3638. [2021-03-11 00:42:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346439373109706) internal successors, (12171), 3637 states have internal predecessors, (12171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:04,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-03-11 00:42:04,354 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-03-11 00:42:04,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:04,354 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-03-11 00:42:04,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:04,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-03-11 00:42:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:04,359 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:04,359 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:04,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-11 00:42:04,360 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:04,360 INFO L82 PathProgramCache]: Analyzing trace with hash 348831896, now seen corresponding path program 127 times [2021-03-11 00:42:04,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:04,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184000368] [2021-03-11 00:42:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:04,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184000368] [2021-03-11 00:42:04,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:04,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:42:04,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969991746] [2021-03-11 00:42:04,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:42:04,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:04,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:42:04,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:42:04,759 INFO L87 Difference]: Start difference. First operand 3638 states and 12171 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:42:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:08,239 INFO L93 Difference]: Finished difference Result 4073 states and 13542 transitions. [2021-03-11 00:42:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:42:08,241 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:42:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:08,248 INFO L225 Difference]: With dead ends: 4073 [2021-03-11 00:42:08,248 INFO L226 Difference]: Without dead ends: 3997 [2021-03-11 00:42:08,248 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2059.1ms TimeCoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:42:08,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2021-03-11 00:42:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3646. [2021-03-11 00:42:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3434842249657066) internal successors, (12187), 3645 states have internal predecessors, (12187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12187 transitions. [2021-03-11 00:42:08,296 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12187 transitions. Word has length 39 [2021-03-11 00:42:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:08,296 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12187 transitions. [2021-03-11 00:42:08,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:42:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12187 transitions. [2021-03-11 00:42:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:08,301 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:08,301 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:08,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-11 00:42:08,301 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:08,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:08,301 INFO L82 PathProgramCache]: Analyzing trace with hash -669221716, now seen corresponding path program 128 times [2021-03-11 00:42:08,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:08,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14651242] [2021-03-11 00:42:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:08,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14651242] [2021-03-11 00:42:08,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:08,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:42:08,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933657489] [2021-03-11 00:42:08,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:42:08,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:08,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:42:08,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:42:08,716 INFO L87 Difference]: Start difference. First operand 3646 states and 12187 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:12,783 INFO L93 Difference]: Finished difference Result 4055 states and 13488 transitions. [2021-03-11 00:42:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:42:12,787 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:42:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:12,796 INFO L225 Difference]: With dead ends: 4055 [2021-03-11 00:42:12,796 INFO L226 Difference]: Without dead ends: 3977 [2021-03-11 00:42:12,797 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 2361.5ms TimeCoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:42:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-03-11 00:42:12,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3626. [2021-03-11 00:42:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.348689655172414) internal successors, (12139), 3625 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12139 transitions. [2021-03-11 00:42:12,870 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12139 transitions. Word has length 39 [2021-03-11 00:42:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:12,870 INFO L480 AbstractCegarLoop]: Abstraction has 3626 states and 12139 transitions. [2021-03-11 00:42:12,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12139 transitions. [2021-03-11 00:42:12,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:12,876 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:12,876 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:12,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-11 00:42:12,876 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:12,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:12,877 INFO L82 PathProgramCache]: Analyzing trace with hash -479556628, now seen corresponding path program 129 times [2021-03-11 00:42:12,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:12,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115410144] [2021-03-11 00:42:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:13,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115410144] [2021-03-11 00:42:13,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:13,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:42:13,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903470436] [2021-03-11 00:42:13,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:42:13,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:13,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:42:13,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:42:13,697 INFO L87 Difference]: Start difference. First operand 3626 states and 12139 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:21,228 INFO L93 Difference]: Finished difference Result 4276 states and 14125 transitions. [2021-03-11 00:42:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-11 00:42:21,232 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:42:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:21,241 INFO L225 Difference]: With dead ends: 4276 [2021-03-11 00:42:21,241 INFO L226 Difference]: Without dead ends: 4170 [2021-03-11 00:42:21,241 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 4169.8ms TimeCoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2021-03-11 00:42:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-03-11 00:42:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3642. [2021-03-11 00:42:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3466080747047515) internal successors, (12185), 3641 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-03-11 00:42:21,316 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-03-11 00:42:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:21,316 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-03-11 00:42:21,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-03-11 00:42:21,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:21,322 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:21,322 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:21,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-11 00:42:21,322 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:21,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1974447528, now seen corresponding path program 130 times [2021-03-11 00:42:21,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:21,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113794634] [2021-03-11 00:42:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:22,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113794634] [2021-03-11 00:42:22,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:22,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:42:22,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563532032] [2021-03-11 00:42:22,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:42:22,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:22,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:42:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:42:22,128 INFO L87 Difference]: Start difference. First operand 3642 states and 12185 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:28,431 INFO L93 Difference]: Finished difference Result 4285 states and 14055 transitions. [2021-03-11 00:42:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:42:28,435 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:42:28,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:28,444 INFO L225 Difference]: With dead ends: 4285 [2021-03-11 00:42:28,444 INFO L226 Difference]: Without dead ends: 4221 [2021-03-11 00:42:28,444 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 3781.5ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 00:42:28,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-03-11 00:42:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 3642. [2021-03-11 00:42:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3466080747047515) internal successors, (12185), 3641 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-03-11 00:42:28,516 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-03-11 00:42:28,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:28,516 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-03-11 00:42:28,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:28,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-03-11 00:42:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:28,522 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:28,522 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:28,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-11 00:42:28,522 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:28,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1055963958, now seen corresponding path program 131 times [2021-03-11 00:42:28,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:28,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569408821] [2021-03-11 00:42:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:29,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569408821] [2021-03-11 00:42:29,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:29,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:42:29,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864215694] [2021-03-11 00:42:29,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:42:29,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:29,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:42:29,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:42:29,283 INFO L87 Difference]: Start difference. First operand 3642 states and 12185 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:33,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:33,409 INFO L93 Difference]: Finished difference Result 4182 states and 13783 transitions. [2021-03-11 00:42:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 00:42:33,411 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:42:33,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:33,417 INFO L225 Difference]: With dead ends: 4182 [2021-03-11 00:42:33,417 INFO L226 Difference]: Without dead ends: 4139 [2021-03-11 00:42:33,418 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 2379.0ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:42:33,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2021-03-11 00:42:33,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 3648. [2021-03-11 00:42:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.344666849465314) internal successors, (12198), 3647 states have internal predecessors, (12198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:33,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12198 transitions. [2021-03-11 00:42:33,468 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12198 transitions. Word has length 39 [2021-03-11 00:42:33,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:33,468 INFO L480 AbstractCegarLoop]: Abstraction has 3648 states and 12198 transitions. [2021-03-11 00:42:33,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12198 transitions. [2021-03-11 00:42:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:33,472 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:33,472 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:33,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-11 00:42:33,473 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:33,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1035815224, now seen corresponding path program 132 times [2021-03-11 00:42:33,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:33,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832256046] [2021-03-11 00:42:33,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:33,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832256046] [2021-03-11 00:42:33,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:33,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:42:33,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285850569] [2021-03-11 00:42:33,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:42:33,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:33,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:42:33,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:42:33,963 INFO L87 Difference]: Start difference. First operand 3648 states and 12198 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:39,362 INFO L93 Difference]: Finished difference Result 4151 states and 13720 transitions. [2021-03-11 00:42:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:42:39,366 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:42:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:39,376 INFO L225 Difference]: With dead ends: 4151 [2021-03-11 00:42:39,376 INFO L226 Difference]: Without dead ends: 4108 [2021-03-11 00:42:39,376 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 2910.9ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:42:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-03-11 00:42:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3644. [2021-03-11 00:42:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.3455942904199834) internal successors, (12188), 3643 states have internal predecessors, (12188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12188 transitions. [2021-03-11 00:42:39,449 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12188 transitions. Word has length 39 [2021-03-11 00:42:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:39,449 INFO L480 AbstractCegarLoop]: Abstraction has 3644 states and 12188 transitions. [2021-03-11 00:42:39,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12188 transitions. [2021-03-11 00:42:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:39,455 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:39,455 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:39,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-11 00:42:39,455 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:39,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:39,456 INFO L82 PathProgramCache]: Analyzing trace with hash 116688264, now seen corresponding path program 133 times [2021-03-11 00:42:39,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:39,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777578143] [2021-03-11 00:42:39,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:40,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777578143] [2021-03-11 00:42:40,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:40,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:42:40,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675057908] [2021-03-11 00:42:40,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:42:40,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:40,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:42:40,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:42:40,343 INFO L87 Difference]: Start difference. First operand 3644 states and 12188 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:45,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:45,149 INFO L93 Difference]: Finished difference Result 4160 states and 13742 transitions. [2021-03-11 00:42:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:42:45,151 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:42:45,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:45,158 INFO L225 Difference]: With dead ends: 4160 [2021-03-11 00:42:45,158 INFO L226 Difference]: Without dead ends: 4100 [2021-03-11 00:42:45,158 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 2822.9ms TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:42:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2021-03-11 00:42:45,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 3642. [2021-03-11 00:42:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3460587750617963) internal successors, (12183), 3641 states have internal predecessors, (12183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12183 transitions. [2021-03-11 00:42:45,205 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12183 transitions. Word has length 39 [2021-03-11 00:42:45,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:45,205 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12183 transitions. [2021-03-11 00:42:45,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:45,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12183 transitions. [2021-03-11 00:42:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:45,209 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:45,209 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:45,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-11 00:42:45,210 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:45,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:45,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1962878278, now seen corresponding path program 134 times [2021-03-11 00:42:45,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:45,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906577091] [2021-03-11 00:42:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:45,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906577091] [2021-03-11 00:42:45,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:45,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:42:45,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022451592] [2021-03-11 00:42:45,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:42:45,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:45,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:42:45,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:42:45,565 INFO L87 Difference]: Start difference. First operand 3642 states and 12183 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:42:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:47,768 INFO L93 Difference]: Finished difference Result 4128 states and 13682 transitions. [2021-03-11 00:42:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:42:47,769 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:42:47,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:47,776 INFO L225 Difference]: With dead ends: 4128 [2021-03-11 00:42:47,776 INFO L226 Difference]: Without dead ends: 4052 [2021-03-11 00:42:47,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1228.2ms TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 00:42:47,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-03-11 00:42:47,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3650. [2021-03-11 00:42:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3431077007399286) internal successors, (12199), 3649 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12199 transitions. [2021-03-11 00:42:47,821 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12199 transitions. Word has length 39 [2021-03-11 00:42:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:47,821 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 12199 transitions. [2021-03-11 00:42:47,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:42:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12199 transitions. [2021-03-11 00:42:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:47,825 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:47,825 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:47,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-11 00:42:47,825 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1314035406, now seen corresponding path program 135 times [2021-03-11 00:42:47,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:47,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662863765] [2021-03-11 00:42:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:48,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662863765] [2021-03-11 00:42:48,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:48,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:42:48,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168709763] [2021-03-11 00:42:48,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:42:48,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:48,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:42:48,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:42:48,217 INFO L87 Difference]: Start difference. First operand 3650 states and 12199 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:50,666 INFO L93 Difference]: Finished difference Result 4110 states and 13628 transitions. [2021-03-11 00:42:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:42:50,667 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:42:50,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:50,674 INFO L225 Difference]: With dead ends: 4110 [2021-03-11 00:42:50,674 INFO L226 Difference]: Without dead ends: 4040 [2021-03-11 00:42:50,674 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1430.5ms TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 00:42:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-03-11 00:42:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3638. [2021-03-11 00:42:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346439373109706) internal successors, (12171), 3637 states have internal predecessors, (12171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-03-11 00:42:50,718 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-03-11 00:42:50,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:50,718 INFO L480 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-03-11 00:42:50,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-03-11 00:42:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:50,721 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:50,722 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:50,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-11 00:42:50,722 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:50,722 INFO L82 PathProgramCache]: Analyzing trace with hash 634844074, now seen corresponding path program 136 times [2021-03-11 00:42:50,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:50,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849243260] [2021-03-11 00:42:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:51,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849243260] [2021-03-11 00:42:51,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:51,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:42:51,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180529760] [2021-03-11 00:42:51,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:42:51,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:51,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:42:51,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:42:51,079 INFO L87 Difference]: Start difference. First operand 3638 states and 12171 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:42:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:53,111 INFO L93 Difference]: Finished difference Result 4059 states and 13491 transitions. [2021-03-11 00:42:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 00:42:53,113 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:42:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:53,119 INFO L225 Difference]: With dead ends: 4059 [2021-03-11 00:42:53,119 INFO L226 Difference]: Without dead ends: 3983 [2021-03-11 00:42:53,120 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1174.1ms TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 00:42:53,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-03-11 00:42:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3670. [2021-03-11 00:42:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.341237394385391) internal successors, (12259), 3669 states have internal predecessors, (12259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12259 transitions. [2021-03-11 00:42:53,165 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12259 transitions. Word has length 39 [2021-03-11 00:42:53,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:53,165 INFO L480 AbstractCegarLoop]: Abstraction has 3670 states and 12259 transitions. [2021-03-11 00:42:53,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:42:53,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12259 transitions. [2021-03-11 00:42:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:53,169 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:53,169 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:53,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-11 00:42:53,169 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:53,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:53,169 INFO L82 PathProgramCache]: Analyzing trace with hash -383209538, now seen corresponding path program 137 times [2021-03-11 00:42:53,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:53,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169718776] [2021-03-11 00:42:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:53,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169718776] [2021-03-11 00:42:53,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:53,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:42:53,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632115957] [2021-03-11 00:42:53,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:42:53,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:53,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:42:53,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:42:53,555 INFO L87 Difference]: Start difference. First operand 3670 states and 12259 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:55,845 INFO L93 Difference]: Finished difference Result 4041 states and 13437 transitions. [2021-03-11 00:42:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 00:42:55,847 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:42:55,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:55,853 INFO L225 Difference]: With dead ends: 4041 [2021-03-11 00:42:55,853 INFO L226 Difference]: Without dead ends: 3975 [2021-03-11 00:42:55,854 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1323.9ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:42:55,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-03-11 00:42:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3662. [2021-03-11 00:42:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.341983064736411) internal successors, (12235), 3661 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:55,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-03-11 00:42:55,898 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-03-11 00:42:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:55,898 INFO L480 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-03-11 00:42:55,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-03-11 00:42:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:55,902 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:55,902 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:55,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-11 00:42:55,902 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:55,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:55,902 INFO L82 PathProgramCache]: Analyzing trace with hash -665475192, now seen corresponding path program 138 times [2021-03-11 00:42:55,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:55,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091532198] [2021-03-11 00:42:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:56,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091532198] [2021-03-11 00:42:56,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:56,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:42:56,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441025812] [2021-03-11 00:42:56,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:42:56,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:56,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:42:56,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:42:56,297 INFO L87 Difference]: Start difference. First operand 3662 states and 12235 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:42:58,595 INFO L93 Difference]: Finished difference Result 4050 states and 13458 transitions. [2021-03-11 00:42:58,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 00:42:58,597 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:42:58,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:42:58,603 INFO L225 Difference]: With dead ends: 4050 [2021-03-11 00:42:58,603 INFO L226 Difference]: Without dead ends: 3888 [2021-03-11 00:42:58,604 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1343.5ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:42:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-03-11 00:42:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3594. [2021-03-11 00:42:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.3529084330642918) internal successors, (12047), 3593 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:42:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12047 transitions. [2021-03-11 00:42:58,649 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12047 transitions. Word has length 39 [2021-03-11 00:42:58,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:42:58,649 INFO L480 AbstractCegarLoop]: Abstraction has 3594 states and 12047 transitions. [2021-03-11 00:42:58,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:42:58,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12047 transitions. [2021-03-11 00:42:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:42:58,653 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:42:58,653 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:42:58,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-11 00:42:58,653 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:42:58,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:42:58,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1293011068, now seen corresponding path program 139 times [2021-03-11 00:42:58,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:42:58,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449612608] [2021-03-11 00:42:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:42:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:42:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:42:59,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449612608] [2021-03-11 00:42:59,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:42:59,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:42:59,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76446497] [2021-03-11 00:42:59,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:42:59,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:42:59,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:42:59,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:42:59,103 INFO L87 Difference]: Start difference. First operand 3594 states and 12047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:02,568 INFO L93 Difference]: Finished difference Result 4277 states and 14182 transitions. [2021-03-11 00:43:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 00:43:02,570 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:02,577 INFO L225 Difference]: With dead ends: 4277 [2021-03-11 00:43:02,577 INFO L226 Difference]: Without dead ends: 4210 [2021-03-11 00:43:02,577 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1962.2ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 00:43:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2021-03-11 00:43:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 3652. [2021-03-11 00:43:02,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3470282114489183) internal successors, (12220), 3651 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12220 transitions. [2021-03-11 00:43:02,623 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12220 transitions. Word has length 39 [2021-03-11 00:43:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:02,623 INFO L480 AbstractCegarLoop]: Abstraction has 3652 states and 12220 transitions. [2021-03-11 00:43:02,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12220 transitions. [2021-03-11 00:43:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:02,626 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:02,627 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:02,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-11 00:43:02,627 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:02,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:02,627 INFO L82 PathProgramCache]: Analyzing trace with hash -426604902, now seen corresponding path program 140 times [2021-03-11 00:43:02,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:02,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631810356] [2021-03-11 00:43:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:03,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631810356] [2021-03-11 00:43:03,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:03,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:03,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870712446] [2021-03-11 00:43:03,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:03,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:03,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:03,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:03,114 INFO L87 Difference]: Start difference. First operand 3652 states and 12220 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:07,584 INFO L93 Difference]: Finished difference Result 4414 states and 14539 transitions. [2021-03-11 00:43:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 00:43:07,586 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:07,593 INFO L225 Difference]: With dead ends: 4414 [2021-03-11 00:43:07,593 INFO L226 Difference]: Without dead ends: 4371 [2021-03-11 00:43:07,593 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 2607.7ms TimeCoverageRelationStatistics Valid=351, Invalid=3681, Unknown=0, NotChecked=0, Total=4032 [2021-03-11 00:43:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2021-03-11 00:43:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3658. [2021-03-11 00:43:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.345091605140826) internal successors, (12233), 3657 states have internal predecessors, (12233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12233 transitions. [2021-03-11 00:43:07,640 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12233 transitions. Word has length 39 [2021-03-11 00:43:07,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:07,640 INFO L480 AbstractCegarLoop]: Abstraction has 3658 states and 12233 transitions. [2021-03-11 00:43:07,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12233 transitions. [2021-03-11 00:43:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:07,644 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:07,644 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:07,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-11 00:43:07,644 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:07,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2087764092, now seen corresponding path program 141 times [2021-03-11 00:43:07,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:07,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57700726] [2021-03-11 00:43:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:08,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57700726] [2021-03-11 00:43:08,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:08,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:08,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667708534] [2021-03-11 00:43:08,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:08,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:08,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:08,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:08,106 INFO L87 Difference]: Start difference. First operand 3658 states and 12233 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:12,432 INFO L93 Difference]: Finished difference Result 4345 states and 14359 transitions. [2021-03-11 00:43:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-11 00:43:12,434 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:12,440 INFO L225 Difference]: With dead ends: 4345 [2021-03-11 00:43:12,440 INFO L226 Difference]: Without dead ends: 4281 [2021-03-11 00:43:12,441 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 2496.6ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-03-11 00:43:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2021-03-11 00:43:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3640. [2021-03-11 00:43:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.3498213794998626) internal successors, (12190), 3639 states have internal predecessors, (12190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12190 transitions. [2021-03-11 00:43:12,487 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12190 transitions. Word has length 39 [2021-03-11 00:43:12,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:12,487 INFO L480 AbstractCegarLoop]: Abstraction has 3640 states and 12190 transitions. [2021-03-11 00:43:12,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12190 transitions. [2021-03-11 00:43:12,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:12,491 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:12,491 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:12,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-11 00:43:12,491 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1586768804, now seen corresponding path program 142 times [2021-03-11 00:43:12,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:12,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957397826] [2021-03-11 00:43:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:12,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957397826] [2021-03-11 00:43:12,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:12,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:12,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339348581] [2021-03-11 00:43:12,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:12,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:12,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:12,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:12,980 INFO L87 Difference]: Start difference. First operand 3640 states and 12190 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:16,201 INFO L93 Difference]: Finished difference Result 4245 states and 14072 transitions. [2021-03-11 00:43:16,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 00:43:16,203 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:16,210 INFO L225 Difference]: With dead ends: 4245 [2021-03-11 00:43:16,210 INFO L226 Difference]: Without dead ends: 4178 [2021-03-11 00:43:16,210 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1848.2ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:43:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2021-03-11 00:43:16,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 3648. [2021-03-11 00:43:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.346860433232794) internal successors, (12206), 3647 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-03-11 00:43:16,258 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-03-11 00:43:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:16,258 INFO L480 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-03-11 00:43:16,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-03-11 00:43:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:16,262 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:16,262 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:16,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-11 00:43:16,262 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:16,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:16,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1717363652, now seen corresponding path program 143 times [2021-03-11 00:43:16,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:16,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538026478] [2021-03-11 00:43:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:16,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538026478] [2021-03-11 00:43:16,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:16,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:16,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003545721] [2021-03-11 00:43:16,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:16,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:16,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:16,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:16,748 INFO L87 Difference]: Start difference. First operand 3648 states and 12206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:20,072 INFO L93 Difference]: Finished difference Result 4233 states and 14032 transitions. [2021-03-11 00:43:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 00:43:20,074 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:20,081 INFO L225 Difference]: With dead ends: 4233 [2021-03-11 00:43:20,081 INFO L226 Difference]: Without dead ends: 4170 [2021-03-11 00:43:20,081 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1915.3ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 00:43:20,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-03-11 00:43:20,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3640. [2021-03-11 00:43:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.348722176422094) internal successors, (12186), 3639 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-03-11 00:43:20,127 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-03-11 00:43:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:20,127 INFO L480 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-03-11 00:43:20,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-03-11 00:43:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:20,131 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:20,131 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:20,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-11 00:43:20,131 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:20,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1853042244, now seen corresponding path program 144 times [2021-03-11 00:43:20,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:20,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602366960] [2021-03-11 00:43:20,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:20,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602366960] [2021-03-11 00:43:20,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:20,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:20,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337272656] [2021-03-11 00:43:20,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:20,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:20,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:20,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:20,661 INFO L87 Difference]: Start difference. First operand 3640 states and 12186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:24,997 INFO L93 Difference]: Finished difference Result 4396 states and 14421 transitions. [2021-03-11 00:43:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-03-11 00:43:24,999 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:25,005 INFO L225 Difference]: With dead ends: 4396 [2021-03-11 00:43:25,005 INFO L226 Difference]: Without dead ends: 4353 [2021-03-11 00:43:25,006 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2635.5ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-03-11 00:43:25,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2021-03-11 00:43:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 3648. [2021-03-11 00:43:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.346860433232794) internal successors, (12206), 3647 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-03-11 00:43:25,053 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-03-11 00:43:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:25,053 INFO L480 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-03-11 00:43:25,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-03-11 00:43:25,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:25,057 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:25,057 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:25,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-03-11 00:43:25,057 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:25,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:25,057 INFO L82 PathProgramCache]: Analyzing trace with hash 661326750, now seen corresponding path program 145 times [2021-03-11 00:43:25,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:25,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502437995] [2021-03-11 00:43:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:25,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502437995] [2021-03-11 00:43:25,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:25,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:25,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897122991] [2021-03-11 00:43:25,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:25,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:25,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:25,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:25,553 INFO L87 Difference]: Start difference. First operand 3648 states and 12206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:29,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:29,927 INFO L93 Difference]: Finished difference Result 4384 states and 14383 transitions. [2021-03-11 00:43:29,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-11 00:43:29,929 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:29,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:29,936 INFO L225 Difference]: With dead ends: 4384 [2021-03-11 00:43:29,936 INFO L226 Difference]: Without dead ends: 4332 [2021-03-11 00:43:29,937 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 2639.0ms TimeCoverageRelationStatistics Valid=325, Invalid=3335, Unknown=0, NotChecked=0, Total=3660 [2021-03-11 00:43:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2021-03-11 00:43:29,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3640. [2021-03-11 00:43:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.348722176422094) internal successors, (12186), 3639 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:29,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-03-11 00:43:29,984 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-03-11 00:43:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:29,984 INFO L480 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-03-11 00:43:29,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-03-11 00:43:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:29,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:29,988 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:29,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-03-11 00:43:29,988 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:29,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:29,988 INFO L82 PathProgramCache]: Analyzing trace with hash -934558674, now seen corresponding path program 146 times [2021-03-11 00:43:29,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:29,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954436371] [2021-03-11 00:43:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:30,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954436371] [2021-03-11 00:43:30,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:30,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:30,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955823425] [2021-03-11 00:43:30,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:30,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:30,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:30,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:30,551 INFO L87 Difference]: Start difference. First operand 3640 states and 12186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:34,516 INFO L93 Difference]: Finished difference Result 4361 states and 14306 transitions. [2021-03-11 00:43:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 00:43:34,518 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:34,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:34,525 INFO L225 Difference]: With dead ends: 4361 [2021-03-11 00:43:34,525 INFO L226 Difference]: Without dead ends: 4306 [2021-03-11 00:43:34,525 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 2293.6ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-03-11 00:43:34,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-03-11 00:43:34,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 3642. [2021-03-11 00:43:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.347706673990662) internal successors, (12189), 3641 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12189 transitions. [2021-03-11 00:43:34,587 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12189 transitions. Word has length 39 [2021-03-11 00:43:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:34,587 INFO L480 AbstractCegarLoop]: Abstraction has 3642 states and 12189 transitions. [2021-03-11 00:43:34,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:34,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12189 transitions. [2021-03-11 00:43:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:34,591 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:34,591 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:34,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-03-11 00:43:34,591 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:34,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:34,591 INFO L82 PathProgramCache]: Analyzing trace with hash 238093548, now seen corresponding path program 147 times [2021-03-11 00:43:34,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:34,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155004140] [2021-03-11 00:43:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:35,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155004140] [2021-03-11 00:43:35,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:35,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:35,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213202641] [2021-03-11 00:43:35,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:35,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:35,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:35,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:35,084 INFO L87 Difference]: Start difference. First operand 3642 states and 12189 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:38,508 INFO L93 Difference]: Finished difference Result 4296 states and 14154 transitions. [2021-03-11 00:43:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 00:43:38,510 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:38,517 INFO L225 Difference]: With dead ends: 4296 [2021-03-11 00:43:38,517 INFO L226 Difference]: Without dead ends: 4250 [2021-03-11 00:43:38,518 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1931.7ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:43:38,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-03-11 00:43:38,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 3646. [2021-03-11 00:43:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3462277091906723) internal successors, (12197), 3645 states have internal predecessors, (12197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12197 transitions. [2021-03-11 00:43:38,563 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12197 transitions. Word has length 39 [2021-03-11 00:43:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:38,563 INFO L480 AbstractCegarLoop]: Abstraction has 3646 states and 12197 transitions. [2021-03-11 00:43:38,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:38,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12197 transitions. [2021-03-11 00:43:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:38,567 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:38,567 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:38,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-03-11 00:43:38,567 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:38,568 INFO L82 PathProgramCache]: Analyzing trace with hash -9372614, now seen corresponding path program 148 times [2021-03-11 00:43:38,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:38,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67251687] [2021-03-11 00:43:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:39,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67251687] [2021-03-11 00:43:39,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:39,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:39,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687421740] [2021-03-11 00:43:39,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:39,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:39,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:39,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:39,079 INFO L87 Difference]: Start difference. First operand 3646 states and 12197 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:42,688 INFO L93 Difference]: Finished difference Result 4256 states and 14065 transitions. [2021-03-11 00:43:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 00:43:42,690 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:42,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:42,697 INFO L225 Difference]: With dead ends: 4256 [2021-03-11 00:43:42,697 INFO L226 Difference]: Without dead ends: 4207 [2021-03-11 00:43:42,697 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 2086.3ms TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:43:42,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-03-11 00:43:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3636. [2021-03-11 00:43:42,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 3635 states have (on average 3.3485557083906463) internal successors, (12172), 3635 states have internal predecessors, (12172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 12172 transitions. [2021-03-11 00:43:42,740 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 12172 transitions. Word has length 39 [2021-03-11 00:43:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:42,741 INFO L480 AbstractCegarLoop]: Abstraction has 3636 states and 12172 transitions. [2021-03-11 00:43:42,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 12172 transitions. [2021-03-11 00:43:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:42,744 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:42,745 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:42,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-03-11 00:43:42,745 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:42,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:42,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1529502908, now seen corresponding path program 149 times [2021-03-11 00:43:42,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:42,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153093294] [2021-03-11 00:43:42,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:43,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153093294] [2021-03-11 00:43:43,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:43,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:43,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810896315] [2021-03-11 00:43:43,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:43,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:43,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:43,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:43,254 INFO L87 Difference]: Start difference. First operand 3636 states and 12172 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:46,677 INFO L93 Difference]: Finished difference Result 4279 states and 14191 transitions. [2021-03-11 00:43:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:43:46,679 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:46,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:46,686 INFO L225 Difference]: With dead ends: 4279 [2021-03-11 00:43:46,686 INFO L226 Difference]: Without dead ends: 4212 [2021-03-11 00:43:46,686 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1770.2ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:43:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2021-03-11 00:43:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3676. [2021-03-11 00:43:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3414965986394556) internal successors, (12280), 3675 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12280 transitions. [2021-03-11 00:43:46,733 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12280 transitions. Word has length 39 [2021-03-11 00:43:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:46,733 INFO L480 AbstractCegarLoop]: Abstraction has 3676 states and 12280 transitions. [2021-03-11 00:43:46,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12280 transitions. [2021-03-11 00:43:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:46,737 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:46,737 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:46,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-03-11 00:43:46,737 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:46,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1398908060, now seen corresponding path program 150 times [2021-03-11 00:43:46,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:46,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656638188] [2021-03-11 00:43:46,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:47,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656638188] [2021-03-11 00:43:47,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:47,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:47,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364761074] [2021-03-11 00:43:47,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:47,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:47,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:47,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:47,278 INFO L87 Difference]: Start difference. First operand 3676 states and 12280 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:50,853 INFO L93 Difference]: Finished difference Result 4267 states and 14151 transitions. [2021-03-11 00:43:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 00:43:50,856 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:50,863 INFO L225 Difference]: With dead ends: 4267 [2021-03-11 00:43:50,863 INFO L226 Difference]: Without dead ends: 4204 [2021-03-11 00:43:50,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1884.2ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:43:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-03-11 00:43:50,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3668. [2021-03-11 00:43:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.342241614398691) internal successors, (12256), 3667 states have internal predecessors, (12256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12256 transitions. [2021-03-11 00:43:50,911 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12256 transitions. Word has length 39 [2021-03-11 00:43:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:50,911 INFO L480 AbstractCegarLoop]: Abstraction has 3668 states and 12256 transitions. [2021-03-11 00:43:50,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12256 transitions. [2021-03-11 00:43:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:50,916 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:50,916 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:50,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-03-11 00:43:50,916 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:50,916 INFO L82 PathProgramCache]: Analyzing trace with hash 869007612, now seen corresponding path program 151 times [2021-03-11 00:43:50,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:50,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504772390] [2021-03-11 00:43:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:51,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504772390] [2021-03-11 00:43:51,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:51,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:51,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735197022] [2021-03-11 00:43:51,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:51,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:51,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:51,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:51,503 INFO L87 Difference]: Start difference. First operand 3668 states and 12256 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:55,153 INFO L93 Difference]: Finished difference Result 4279 states and 14179 transitions. [2021-03-11 00:43:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:43:55,155 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:55,162 INFO L225 Difference]: With dead ends: 4279 [2021-03-11 00:43:55,162 INFO L226 Difference]: Without dead ends: 4140 [2021-03-11 00:43:55,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1917.5ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:43:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-03-11 00:43:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3616. [2021-03-11 00:43:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.34716459197787) internal successors, (12100), 3615 states have internal predecessors, (12100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12100 transitions. [2021-03-11 00:43:55,207 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12100 transitions. Word has length 39 [2021-03-11 00:43:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:55,207 INFO L480 AbstractCegarLoop]: Abstraction has 3616 states and 12100 transitions. [2021-03-11 00:43:55,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12100 transitions. [2021-03-11 00:43:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:55,211 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:55,211 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:55,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-03-11 00:43:55,211 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:55,211 INFO L82 PathProgramCache]: Analyzing trace with hash -508920310, now seen corresponding path program 152 times [2021-03-11 00:43:55,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:55,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116252520] [2021-03-11 00:43:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:55,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116252520] [2021-03-11 00:43:55,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:55,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:55,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088901548] [2021-03-11 00:43:55,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:55,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:55,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:55,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:55,738 INFO L87 Difference]: Start difference. First operand 3616 states and 12100 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:43:58,766 INFO L93 Difference]: Finished difference Result 4091 states and 13567 transitions. [2021-03-11 00:43:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 00:43:58,769 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:43:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:43:58,775 INFO L225 Difference]: With dead ends: 4091 [2021-03-11 00:43:58,775 INFO L226 Difference]: Without dead ends: 4024 [2021-03-11 00:43:58,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1770.3ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:43:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-03-11 00:43:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3668. [2021-03-11 00:43:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.3367875647668392) internal successors, (12236), 3667 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:43:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12236 transitions. [2021-03-11 00:43:58,838 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12236 transitions. Word has length 39 [2021-03-11 00:43:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:43:58,838 INFO L480 AbstractCegarLoop]: Abstraction has 3668 states and 12236 transitions. [2021-03-11 00:43:58,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:43:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12236 transitions. [2021-03-11 00:43:58,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:43:58,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:43:58,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:43:58,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-03-11 00:43:58,842 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:43:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:43:58,843 INFO L82 PathProgramCache]: Analyzing trace with hash -681063528, now seen corresponding path program 153 times [2021-03-11 00:43:58,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:43:58,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156234198] [2021-03-11 00:43:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:43:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:43:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:43:59,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156234198] [2021-03-11 00:43:59,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:43:59,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:43:59,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250216776] [2021-03-11 00:43:59,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:43:59,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:43:59,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:43:59,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:43:59,384 INFO L87 Difference]: Start difference. First operand 3668 states and 12236 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:44:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:02,761 INFO L93 Difference]: Finished difference Result 4079 states and 13527 transitions. [2021-03-11 00:44:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:44:02,764 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:44:02,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:02,770 INFO L225 Difference]: With dead ends: 4079 [2021-03-11 00:44:02,770 INFO L226 Difference]: Without dead ends: 4016 [2021-03-11 00:44:02,770 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1936.6ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:44:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-03-11 00:44:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3660. [2021-03-11 00:44:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3659 states have (on average 3.337523913637606) internal successors, (12212), 3659 states have internal predecessors, (12212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 12212 transitions. [2021-03-11 00:44:02,817 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 12212 transitions. Word has length 39 [2021-03-11 00:44:02,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:02,817 INFO L480 AbstractCegarLoop]: Abstraction has 3660 states and 12212 transitions. [2021-03-11 00:44:02,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:44:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 12212 transitions. [2021-03-11 00:44:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:02,821 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:02,821 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:02,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-03-11 00:44:02,821 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:02,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:02,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1811069612, now seen corresponding path program 154 times [2021-03-11 00:44:02,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:02,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588376642] [2021-03-11 00:44:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:03,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588376642] [2021-03-11 00:44:03,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:03,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:44:03,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008807704] [2021-03-11 00:44:03,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:44:03,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:03,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:44:03,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:44:03,373 INFO L87 Difference]: Start difference. First operand 3660 states and 12212 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:44:06,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:06,689 INFO L93 Difference]: Finished difference Result 4079 states and 13519 transitions. [2021-03-11 00:44:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:44:06,691 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:44:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:06,698 INFO L225 Difference]: With dead ends: 4079 [2021-03-11 00:44:06,698 INFO L226 Difference]: Without dead ends: 3936 [2021-03-11 00:44:06,698 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1896.7ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:44:06,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-03-11 00:44:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3608. [2021-03-11 00:44:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 3607 states have (on average 3.349043526476296) internal successors, (12080), 3607 states have internal predecessors, (12080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 12080 transitions. [2021-03-11 00:44:06,744 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 12080 transitions. Word has length 39 [2021-03-11 00:44:06,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:06,744 INFO L480 AbstractCegarLoop]: Abstraction has 3608 states and 12080 transitions. [2021-03-11 00:44:06,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:44:06,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 12080 transitions. [2021-03-11 00:44:06,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:06,748 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:06,748 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:06,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-03-11 00:44:06,748 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:06,749 INFO L82 PathProgramCache]: Analyzing trace with hash 439883512, now seen corresponding path program 155 times [2021-03-11 00:44:06,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:06,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777895838] [2021-03-11 00:44:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:07,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777895838] [2021-03-11 00:44:07,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:07,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:07,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464358034] [2021-03-11 00:44:07,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:07,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:07,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:07,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:07,309 INFO L87 Difference]: Start difference. First operand 3608 states and 12080 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:11,773 INFO L93 Difference]: Finished difference Result 4203 states and 13971 transitions. [2021-03-11 00:44:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 00:44:11,776 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:44:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:11,782 INFO L225 Difference]: With dead ends: 4203 [2021-03-11 00:44:11,782 INFO L226 Difference]: Without dead ends: 4136 [2021-03-11 00:44:11,783 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 2467.7ms TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:44:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2021-03-11 00:44:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3696. [2021-03-11 00:44:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 3.349120433017591) internal successors, (12375), 3695 states have internal predecessors, (12375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 12375 transitions. [2021-03-11 00:44:11,830 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 12375 transitions. Word has length 39 [2021-03-11 00:44:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:11,831 INFO L480 AbstractCegarLoop]: Abstraction has 3696 states and 12375 transitions. [2021-03-11 00:44:11,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 12375 transitions. [2021-03-11 00:44:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:11,836 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:11,836 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:11,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-03-11 00:44:11,837 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1279732458, now seen corresponding path program 156 times [2021-03-11 00:44:11,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:11,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018105491] [2021-03-11 00:44:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:12,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018105491] [2021-03-11 00:44:12,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:12,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:12,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313233565] [2021-03-11 00:44:12,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:12,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:12,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:12,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:12,365 INFO L87 Difference]: Start difference. First operand 3696 states and 12375 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:17,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:17,689 INFO L93 Difference]: Finished difference Result 4340 states and 14328 transitions. [2021-03-11 00:44:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-11 00:44:17,691 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:44:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:17,698 INFO L225 Difference]: With dead ends: 4340 [2021-03-11 00:44:17,698 INFO L226 Difference]: Without dead ends: 4297 [2021-03-11 00:44:17,698 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 3080.6ms TimeCoverageRelationStatistics Valid=332, Invalid=3328, Unknown=0, NotChecked=0, Total=3660 [2021-03-11 00:44:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2021-03-11 00:44:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3702. [2021-03-11 00:44:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3701 states have (on average 3.347203458524723) internal successors, (12388), 3701 states have internal predecessors, (12388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 12388 transitions. [2021-03-11 00:44:17,745 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 12388 transitions. Word has length 39 [2021-03-11 00:44:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:17,745 INFO L480 AbstractCegarLoop]: Abstraction has 3702 states and 12388 transitions. [2021-03-11 00:44:17,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 12388 transitions. [2021-03-11 00:44:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:17,749 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:17,749 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:17,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-03-11 00:44:17,749 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:17,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1234636536, now seen corresponding path program 157 times [2021-03-11 00:44:17,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:17,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030428772] [2021-03-11 00:44:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:18,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030428772] [2021-03-11 00:44:18,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:18,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:18,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608848276] [2021-03-11 00:44:18,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:18,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:18,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:18,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:18,295 INFO L87 Difference]: Start difference. First operand 3702 states and 12388 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:23,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:23,844 INFO L93 Difference]: Finished difference Result 4271 states and 14148 transitions. [2021-03-11 00:44:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-11 00:44:23,846 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:44:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:23,853 INFO L225 Difference]: With dead ends: 4271 [2021-03-11 00:44:23,853 INFO L226 Difference]: Without dead ends: 4207 [2021-03-11 00:44:23,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 3162.7ms TimeCoverageRelationStatistics Valid=314, Invalid=3108, Unknown=0, NotChecked=0, Total=3422 [2021-03-11 00:44:23,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-03-11 00:44:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3684. [2021-03-11 00:44:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 3.3518870486016836) internal successors, (12345), 3683 states have internal predecessors, (12345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 12345 transitions. [2021-03-11 00:44:23,901 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 12345 transitions. Word has length 39 [2021-03-11 00:44:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:23,901 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 12345 transitions. [2021-03-11 00:44:23,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 12345 transitions. [2021-03-11 00:44:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:23,905 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:23,906 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:23,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-03-11 00:44:23,906 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:23,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:23,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1855070936, now seen corresponding path program 158 times [2021-03-11 00:44:23,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:23,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27202658] [2021-03-11 00:44:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:24,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27202658] [2021-03-11 00:44:24,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:24,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:24,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263694013] [2021-03-11 00:44:24,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:24,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:24,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:24,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:24,464 INFO L87 Difference]: Start difference. First operand 3684 states and 12345 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:28,143 INFO L93 Difference]: Finished difference Result 4183 states and 13899 transitions. [2021-03-11 00:44:28,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 00:44:28,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:44:28,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:28,152 INFO L225 Difference]: With dead ends: 4183 [2021-03-11 00:44:28,152 INFO L226 Difference]: Without dead ends: 4116 [2021-03-11 00:44:28,152 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 2025.7ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:44:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-03-11 00:44:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3712. [2021-03-11 00:44:28,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.3481541363513876) internal successors, (12425), 3711 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12425 transitions. [2021-03-11 00:44:28,200 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12425 transitions. Word has length 39 [2021-03-11 00:44:28,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:28,200 INFO L480 AbstractCegarLoop]: Abstraction has 3712 states and 12425 transitions. [2021-03-11 00:44:28,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:28,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12425 transitions. [2021-03-11 00:44:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:28,204 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:28,204 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:28,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-03-11 00:44:28,204 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:28,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:28,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1724476088, now seen corresponding path program 159 times [2021-03-11 00:44:28,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:28,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048043291] [2021-03-11 00:44:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:28,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048043291] [2021-03-11 00:44:28,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:28,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:28,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099052262] [2021-03-11 00:44:28,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:28,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:28,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:28,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:28,757 INFO L87 Difference]: Start difference. First operand 3712 states and 12425 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:32,668 INFO L93 Difference]: Finished difference Result 4171 states and 13859 transitions. [2021-03-11 00:44:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:44:32,670 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:44:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:32,676 INFO L225 Difference]: With dead ends: 4171 [2021-03-11 00:44:32,676 INFO L226 Difference]: Without dead ends: 4108 [2021-03-11 00:44:32,677 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 2171.1ms TimeCoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:44:32,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-03-11 00:44:32,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3704. [2021-03-11 00:44:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.3499864974345126) internal successors, (12405), 3703 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12405 transitions. [2021-03-11 00:44:32,722 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12405 transitions. Word has length 39 [2021-03-11 00:44:32,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:32,722 INFO L480 AbstractCegarLoop]: Abstraction has 3704 states and 12405 transitions. [2021-03-11 00:44:32,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:32,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12405 transitions. [2021-03-11 00:44:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:32,726 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:32,726 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:32,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-03-11 00:44:32,726 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:32,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1588797496, now seen corresponding path program 160 times [2021-03-11 00:44:32,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:32,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899835696] [2021-03-11 00:44:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:33,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899835696] [2021-03-11 00:44:33,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:33,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:33,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333798169] [2021-03-11 00:44:33,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:33,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:33,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:33,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:33,249 INFO L87 Difference]: Start difference. First operand 3704 states and 12405 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:38,033 INFO L93 Difference]: Finished difference Result 4334 states and 14248 transitions. [2021-03-11 00:44:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-11 00:44:38,035 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:44:38,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:38,042 INFO L225 Difference]: With dead ends: 4334 [2021-03-11 00:44:38,042 INFO L226 Difference]: Without dead ends: 4291 [2021-03-11 00:44:38,042 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 2870.5ms TimeCoverageRelationStatistics Valid=323, Invalid=3099, Unknown=0, NotChecked=0, Total=3422 [2021-03-11 00:44:38,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2021-03-11 00:44:38,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 3712. [2021-03-11 00:44:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.3481541363513876) internal successors, (12425), 3711 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12425 transitions. [2021-03-11 00:44:38,089 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12425 transitions. Word has length 39 [2021-03-11 00:44:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:38,089 INFO L480 AbstractCegarLoop]: Abstraction has 3712 states and 12425 transitions. [2021-03-11 00:44:38,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12425 transitions. [2021-03-11 00:44:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:38,093 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:38,093 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:38,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-03-11 00:44:38,093 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash -191800806, now seen corresponding path program 161 times [2021-03-11 00:44:38,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:38,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760250811] [2021-03-11 00:44:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:38,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760250811] [2021-03-11 00:44:38,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:38,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:38,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925247383] [2021-03-11 00:44:38,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:38,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:38,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:38,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:38,637 INFO L87 Difference]: Start difference. First operand 3712 states and 12425 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:43,724 INFO L93 Difference]: Finished difference Result 4322 states and 14210 transitions. [2021-03-11 00:44:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-11 00:44:43,726 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:44:43,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:43,733 INFO L225 Difference]: With dead ends: 4322 [2021-03-11 00:44:43,733 INFO L226 Difference]: Without dead ends: 4270 [2021-03-11 00:44:43,734 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 2982.3ms TimeCoverageRelationStatistics Valid=315, Invalid=2991, Unknown=0, NotChecked=0, Total=3306 [2021-03-11 00:44:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-03-11 00:44:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3704. [2021-03-11 00:44:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.3499864974345126) internal successors, (12405), 3703 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12405 transitions. [2021-03-11 00:44:43,781 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12405 transitions. Word has length 39 [2021-03-11 00:44:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:43,781 INFO L480 AbstractCegarLoop]: Abstraction has 3704 states and 12405 transitions. [2021-03-11 00:44:43,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12405 transitions. [2021-03-11 00:44:43,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:43,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:43,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:43,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-03-11 00:44:43,785 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:43,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:43,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1787686230, now seen corresponding path program 162 times [2021-03-11 00:44:43,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:43,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804316457] [2021-03-11 00:44:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:44,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804316457] [2021-03-11 00:44:44,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:44,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:44,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108296972] [2021-03-11 00:44:44,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:44,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:44,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:44,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:44,327 INFO L87 Difference]: Start difference. First operand 3704 states and 12405 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:48,441 INFO L93 Difference]: Finished difference Result 4299 states and 14133 transitions. [2021-03-11 00:44:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 00:44:48,443 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:44:48,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:48,450 INFO L225 Difference]: With dead ends: 4299 [2021-03-11 00:44:48,450 INFO L226 Difference]: Without dead ends: 4244 [2021-03-11 00:44:48,450 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 2383.0ms TimeCoverageRelationStatistics Valid=258, Invalid=2292, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:44:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2021-03-11 00:44:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 3706. [2021-03-11 00:44:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3489878542510123) internal successors, (12408), 3705 states have internal predecessors, (12408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12408 transitions. [2021-03-11 00:44:48,496 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12408 transitions. Word has length 39 [2021-03-11 00:44:48,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:48,496 INFO L480 AbstractCegarLoop]: Abstraction has 3706 states and 12408 transitions. [2021-03-11 00:44:48,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:48,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12408 transitions. [2021-03-11 00:44:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:48,500 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:48,500 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:48,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-03-11 00:44:48,500 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:48,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:48,500 INFO L82 PathProgramCache]: Analyzing trace with hash -615034008, now seen corresponding path program 163 times [2021-03-11 00:44:48,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:48,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546366492] [2021-03-11 00:44:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:49,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546366492] [2021-03-11 00:44:49,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:49,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:49,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428151651] [2021-03-11 00:44:49,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:49,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:49,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:49,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:49,037 INFO L87 Difference]: Start difference. First operand 3706 states and 12408 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:53,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:53,116 INFO L93 Difference]: Finished difference Result 4234 states and 13981 transitions. [2021-03-11 00:44:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:44:53,120 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:44:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:53,127 INFO L225 Difference]: With dead ends: 4234 [2021-03-11 00:44:53,127 INFO L226 Difference]: Without dead ends: 4188 [2021-03-11 00:44:53,127 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 2276.0ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 00:44:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-03-11 00:44:53,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3710. [2021-03-11 00:44:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3709 states have (on average 3.3475330277702886) internal successors, (12416), 3709 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:53,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 12416 transitions. [2021-03-11 00:44:53,180 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 12416 transitions. Word has length 39 [2021-03-11 00:44:53,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:53,180 INFO L480 AbstractCegarLoop]: Abstraction has 3710 states and 12416 transitions. [2021-03-11 00:44:53,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:53,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 12416 transitions. [2021-03-11 00:44:53,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:53,185 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:53,185 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:53,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-03-11 00:44:53,185 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:53,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:53,185 INFO L82 PathProgramCache]: Analyzing trace with hash -862500170, now seen corresponding path program 164 times [2021-03-11 00:44:53,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:53,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573854010] [2021-03-11 00:44:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:53,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573854010] [2021-03-11 00:44:53,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:53,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:53,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203464523] [2021-03-11 00:44:53,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:53,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:53,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:53,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:53,810 INFO L87 Difference]: Start difference. First operand 3710 states and 12416 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:58,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:44:58,610 INFO L93 Difference]: Finished difference Result 4341 states and 14308 transitions. [2021-03-11 00:44:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-11 00:44:58,613 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:44:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:44:58,619 INFO L225 Difference]: With dead ends: 4341 [2021-03-11 00:44:58,619 INFO L226 Difference]: Without dead ends: 4277 [2021-03-11 00:44:58,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 2910.1ms TimeCoverageRelationStatistics Valid=293, Invalid=2677, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 00:44:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-03-11 00:44:58,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3760. [2021-03-11 00:44:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3759 states have (on average 3.346368715083799) internal successors, (12579), 3759 states have internal predecessors, (12579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:44:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 12579 transitions. [2021-03-11 00:44:58,666 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 12579 transitions. Word has length 39 [2021-03-11 00:44:58,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:44:58,666 INFO L480 AbstractCegarLoop]: Abstraction has 3760 states and 12579 transitions. [2021-03-11 00:44:58,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:44:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 12579 transitions. [2021-03-11 00:44:58,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:44:58,670 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:44:58,670 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:44:58,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-03-11 00:44:58,670 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:44:58,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:44:58,671 INFO L82 PathProgramCache]: Analyzing trace with hash 676375352, now seen corresponding path program 165 times [2021-03-11 00:44:58,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:44:58,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921356416] [2021-03-11 00:44:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:44:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:44:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:44:59,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921356416] [2021-03-11 00:44:59,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:44:59,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:44:59,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112901484] [2021-03-11 00:44:59,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:44:59,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:44:59,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:44:59,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:44:59,217 INFO L87 Difference]: Start difference. First operand 3760 states and 12579 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:45:03,197 INFO L93 Difference]: Finished difference Result 4215 states and 14023 transitions. [2021-03-11 00:45:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:45:03,200 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:45:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:45:03,207 INFO L225 Difference]: With dead ends: 4215 [2021-03-11 00:45:03,207 INFO L226 Difference]: Without dead ends: 4148 [2021-03-11 00:45:03,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 2007.9ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:45:03,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2021-03-11 00:45:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3800. [2021-03-11 00:45:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3799 states have (on average 3.339563042906028) internal successors, (12687), 3799 states have internal predecessors, (12687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:45:03,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 12687 transitions. [2021-03-11 00:45:03,258 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 12687 transitions. Word has length 39 [2021-03-11 00:45:03,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:45:03,258 INFO L480 AbstractCegarLoop]: Abstraction has 3800 states and 12687 transitions. [2021-03-11 00:45:03,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:03,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 12687 transitions. [2021-03-11 00:45:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:45:03,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:45:03,263 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:45:03,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-03-11 00:45:03,263 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:45:03,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:45:03,263 INFO L82 PathProgramCache]: Analyzing trace with hash 545780504, now seen corresponding path program 166 times [2021-03-11 00:45:03,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:45:03,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705283148] [2021-03-11 00:45:03,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:45:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:45:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:45:03,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705283148] [2021-03-11 00:45:03,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:45:03,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:45:03,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652145965] [2021-03-11 00:45:03,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:45:03,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:45:03,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:45:03,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:45:03,938 INFO L87 Difference]: Start difference. First operand 3800 states and 12687 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:08,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:45:08,064 INFO L93 Difference]: Finished difference Result 4203 states and 13983 transitions. [2021-03-11 00:45:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 00:45:08,067 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:45:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:45:08,074 INFO L225 Difference]: With dead ends: 4203 [2021-03-11 00:45:08,074 INFO L226 Difference]: Without dead ends: 4140 [2021-03-11 00:45:08,074 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2218.0ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 00:45:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-03-11 00:45:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3792. [2021-03-11 00:45:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3791 states have (on average 3.340279609601688) internal successors, (12663), 3791 states have internal predecessors, (12663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:45:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 12663 transitions. [2021-03-11 00:45:08,125 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 12663 transitions. Word has length 39 [2021-03-11 00:45:08,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:45:08,125 INFO L480 AbstractCegarLoop]: Abstraction has 3792 states and 12663 transitions. [2021-03-11 00:45:08,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:08,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 12663 transitions. [2021-03-11 00:45:08,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:45:08,129 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:45:08,129 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:45:08,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-03-11 00:45:08,129 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:45:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:45:08,130 INFO L82 PathProgramCache]: Analyzing trace with hash 15880056, now seen corresponding path program 167 times [2021-03-11 00:45:08,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:45:08,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815582469] [2021-03-11 00:45:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:45:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:45:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:45:08,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815582469] [2021-03-11 00:45:08,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:45:08,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:45:08,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044800555] [2021-03-11 00:45:08,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:45:08,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:45:08,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:45:08,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:45:08,767 INFO L87 Difference]: Start difference. First operand 3792 states and 12663 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:13,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:45:13,026 INFO L93 Difference]: Finished difference Result 4227 states and 14043 transitions. [2021-03-11 00:45:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 00:45:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:45:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:45:13,036 INFO L225 Difference]: With dead ends: 4227 [2021-03-11 00:45:13,036 INFO L226 Difference]: Without dead ends: 4104 [2021-03-11 00:45:13,036 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2232.8ms TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 00:45:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2021-03-11 00:45:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3744. [2021-03-11 00:45:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 3.347314987977558) internal successors, (12529), 3743 states have internal predecessors, (12529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:45:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 12529 transitions. [2021-03-11 00:45:13,084 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 12529 transitions. Word has length 39 [2021-03-11 00:45:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:45:13,084 INFO L480 AbstractCegarLoop]: Abstraction has 3744 states and 12529 transitions. [2021-03-11 00:45:13,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 12529 transitions. [2021-03-11 00:45:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:45:13,088 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:45:13,088 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:45:13,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-03-11 00:45:13,089 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:45:13,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:45:13,089 INFO L82 PathProgramCache]: Analyzing trace with hash -702531114, now seen corresponding path program 168 times [2021-03-11 00:45:13,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:45:13,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429337952] [2021-03-11 00:45:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:45:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:45:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:45:13,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429337952] [2021-03-11 00:45:13,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:45:13,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:45:13,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896660301] [2021-03-11 00:45:13,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:45:13,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:45:13,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:45:13,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:45:13,715 INFO L87 Difference]: Start difference. First operand 3744 states and 12529 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:45:20,974 INFO L93 Difference]: Finished difference Result 6362 states and 21428 transitions. [2021-03-11 00:45:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-11 00:45:20,977 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:45:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:45:20,987 INFO L225 Difference]: With dead ends: 6362 [2021-03-11 00:45:20,988 INFO L226 Difference]: Without dead ends: 6319 [2021-03-11 00:45:20,988 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 3948.5ms TimeCoverageRelationStatistics Valid=399, Invalid=4157, Unknown=0, NotChecked=0, Total=4556 [2021-03-11 00:45:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2021-03-11 00:45:21,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 3972. [2021-03-11 00:45:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3971 states have (on average 3.3598589775875096) internal successors, (13342), 3971 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:45:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 13342 transitions. [2021-03-11 00:45:21,049 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 13342 transitions. Word has length 39 [2021-03-11 00:45:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:45:21,049 INFO L480 AbstractCegarLoop]: Abstraction has 3972 states and 13342 transitions. [2021-03-11 00:45:21,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 13342 transitions. [2021-03-11 00:45:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:45:21,053 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:45:21,053 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:45:21,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-03-11 00:45:21,053 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:45:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:45:21,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1811837880, now seen corresponding path program 169 times [2021-03-11 00:45:21,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:45:21,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707758180] [2021-03-11 00:45:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:45:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:45:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:45:21,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707758180] [2021-03-11 00:45:21,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:45:21,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:45:21,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447578451] [2021-03-11 00:45:21,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:45:21,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:45:21,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:45:21,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:45:21,728 INFO L87 Difference]: Start difference. First operand 3972 states and 13342 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:30,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:45:30,602 INFO L93 Difference]: Finished difference Result 7267 states and 24502 transitions. [2021-03-11 00:45:30,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-11 00:45:30,605 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:45:30,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:45:30,618 INFO L225 Difference]: With dead ends: 7267 [2021-03-11 00:45:30,618 INFO L226 Difference]: Without dead ends: 7215 [2021-03-11 00:45:30,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 4704.0ms TimeCoverageRelationStatistics Valid=448, Invalid=5102, Unknown=0, NotChecked=0, Total=5550 [2021-03-11 00:45:30,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7215 states. [2021-03-11 00:45:30,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7215 to 3942. [2021-03-11 00:45:30,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3941 states have (on average 3.3613296117736615) internal successors, (13247), 3941 states have internal predecessors, (13247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:45:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 13247 transitions. [2021-03-11 00:45:30,684 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 13247 transitions. Word has length 39 [2021-03-11 00:45:30,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:45:30,684 INFO L480 AbstractCegarLoop]: Abstraction has 3942 states and 13247 transitions. [2021-03-11 00:45:30,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 13247 transitions. [2021-03-11 00:45:30,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:45:30,688 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:45:30,689 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:45:30,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-03-11 00:45:30,689 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:45:30,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:45:30,689 INFO L82 PathProgramCache]: Analyzing trace with hash 215952456, now seen corresponding path program 170 times [2021-03-11 00:45:30,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:45:30,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516639118] [2021-03-11 00:45:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:45:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:45:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:45:31,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516639118] [2021-03-11 00:45:31,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:45:31,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:45:31,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266089517] [2021-03-11 00:45:31,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:45:31,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:45:31,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:45:31,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:45:31,412 INFO L87 Difference]: Start difference. First operand 3942 states and 13247 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:45:37,037 INFO L93 Difference]: Finished difference Result 6269 states and 21030 transitions. [2021-03-11 00:45:37,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-11 00:45:37,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:45:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:45:37,050 INFO L225 Difference]: With dead ends: 6269 [2021-03-11 00:45:37,050 INFO L226 Difference]: Without dead ends: 6214 [2021-03-11 00:45:37,051 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 2814.0ms TimeCoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 00:45:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-03-11 00:45:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 4147. [2021-03-11 00:45:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 4146 states have (on average 3.3779546550892428) internal successors, (14005), 4146 states have internal predecessors, (14005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:45:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 14005 transitions. [2021-03-11 00:45:37,113 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 14005 transitions. Word has length 39 [2021-03-11 00:45:37,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:45:37,113 INFO L480 AbstractCegarLoop]: Abstraction has 4147 states and 14005 transitions. [2021-03-11 00:45:37,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 14005 transitions. [2021-03-11 00:45:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:45:37,118 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:45:37,118 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:45:37,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-03-11 00:45:37,118 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:45:37,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:45:37,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1388604678, now seen corresponding path program 171 times [2021-03-11 00:45:37,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:45:37,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565104665] [2021-03-11 00:45:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:45:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:45:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:45:37,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565104665] [2021-03-11 00:45:37,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:45:37,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:45:37,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138416674] [2021-03-11 00:45:37,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:45:37,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:45:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:45:37,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:45:37,764 INFO L87 Difference]: Start difference. First operand 4147 states and 14005 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:45:44,840 INFO L93 Difference]: Finished difference Result 7174 states and 24108 transitions. [2021-03-11 00:45:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-03-11 00:45:44,843 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:45:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:45:44,854 INFO L225 Difference]: With dead ends: 7174 [2021-03-11 00:45:44,854 INFO L226 Difference]: Without dead ends: 7114 [2021-03-11 00:45:44,855 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 3276.2ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-03-11 00:45:44,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2021-03-11 00:45:44,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 4145. [2021-03-11 00:45:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.3783783783783785) internal successors, (14000), 4144 states have internal predecessors, (14000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:45:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 14000 transitions. [2021-03-11 00:45:44,921 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 14000 transitions. Word has length 39 [2021-03-11 00:45:44,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:45:44,921 INFO L480 AbstractCegarLoop]: Abstraction has 4145 states and 14000 transitions. [2021-03-11 00:45:44,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 14000 transitions. [2021-03-11 00:45:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:45:44,926 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:45:44,926 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:45:44,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-03-11 00:45:44,926 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:45:44,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:45:44,926 INFO L82 PathProgramCache]: Analyzing trace with hash -488798924, now seen corresponding path program 172 times [2021-03-11 00:45:44,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:45:44,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745984298] [2021-03-11 00:45:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:45:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:45:45,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:45:45,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745984298] [2021-03-11 00:45:45,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:45:45,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:45:45,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288950171] [2021-03-11 00:45:45,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:45:45,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:45:45,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:45:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:45:45,525 INFO L87 Difference]: Start difference. First operand 4145 states and 14000 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:51,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:45:51,264 INFO L93 Difference]: Finished difference Result 6238 states and 20984 transitions. [2021-03-11 00:45:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 00:45:51,266 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:45:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:45:51,277 INFO L225 Difference]: With dead ends: 6238 [2021-03-11 00:45:51,277 INFO L226 Difference]: Without dead ends: 6147 [2021-03-11 00:45:51,277 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2689.5ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:45:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2021-03-11 00:45:51,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 4145. [2021-03-11 00:45:51,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.376930501930502) internal successors, (13994), 4144 states have internal predecessors, (13994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:45:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 13994 transitions. [2021-03-11 00:45:51,342 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 13994 transitions. Word has length 39 [2021-03-11 00:45:51,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:45:51,343 INFO L480 AbstractCegarLoop]: Abstraction has 4145 states and 13994 transitions. [2021-03-11 00:45:51,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:51,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 13994 transitions. [2021-03-11 00:45:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:45:51,347 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:45:51,348 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:45:51,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-03-11 00:45:51,348 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:45:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:45:51,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1991281130, now seen corresponding path program 173 times [2021-03-11 00:45:51,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:45:51,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393733861] [2021-03-11 00:45:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:45:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:45:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:45:52,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393733861] [2021-03-11 00:45:52,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:45:52,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:45:52,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548997162] [2021-03-11 00:45:52,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:45:52,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:45:52,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:45:52,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:45:52,063 INFO L87 Difference]: Start difference. First operand 4145 states and 13994 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:45:59,132 INFO L93 Difference]: Finished difference Result 7326 states and 24599 transitions. [2021-03-11 00:45:59,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-11 00:45:59,135 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:45:59,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:45:59,147 INFO L225 Difference]: With dead ends: 7326 [2021-03-11 00:45:59,147 INFO L226 Difference]: Without dead ends: 7147 [2021-03-11 00:45:59,147 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 3287.3ms TimeCoverageRelationStatistics Valid=290, Invalid=3016, Unknown=0, NotChecked=0, Total=3306 [2021-03-11 00:45:59,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7147 states. [2021-03-11 00:45:59,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7147 to 4326. [2021-03-11 00:45:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3784971098265895) internal successors, (14612), 4325 states have internal predecessors, (14612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:45:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14612 transitions. [2021-03-11 00:45:59,228 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14612 transitions. Word has length 39 [2021-03-11 00:45:59,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:45:59,228 INFO L480 AbstractCegarLoop]: Abstraction has 4326 states and 14612 transitions. [2021-03-11 00:45:59,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:45:59,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14612 transitions. [2021-03-11 00:45:59,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:45:59,235 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:45:59,235 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:45:59,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-03-11 00:45:59,235 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:45:59,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:45:59,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1457358134, now seen corresponding path program 174 times [2021-03-11 00:45:59,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:45:59,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301073008] [2021-03-11 00:45:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:45:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:45:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:45:59,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301073008] [2021-03-11 00:45:59,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:45:59,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:45:59,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157837364] [2021-03-11 00:45:59,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:45:59,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:45:59,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:45:59,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:45:59,899 INFO L87 Difference]: Start difference. First operand 4326 states and 14612 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:46:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:46:04,254 INFO L93 Difference]: Finished difference Result 4703 states and 15805 transitions. [2021-03-11 00:46:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:46:04,258 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:46:04,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:46:04,265 INFO L225 Difference]: With dead ends: 4703 [2021-03-11 00:46:04,265 INFO L226 Difference]: Without dead ends: 4636 [2021-03-11 00:46:04,266 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 2446.0ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 00:46:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-03-11 00:46:04,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 4338. [2021-03-11 00:46:04,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 3.3751441088309893) internal successors, (14638), 4337 states have internal predecessors, (14638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:46:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 14638 transitions. [2021-03-11 00:46:04,326 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 14638 transitions. Word has length 39 [2021-03-11 00:46:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:46:04,326 INFO L480 AbstractCegarLoop]: Abstraction has 4338 states and 14638 transitions. [2021-03-11 00:46:04,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:46:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 14638 transitions. [2021-03-11 00:46:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:46:04,330 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:46:04,331 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:46:04,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-03-11 00:46:04,331 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:46:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:46:04,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1117993192, now seen corresponding path program 175 times [2021-03-11 00:46:04,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:46:04,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597589618] [2021-03-11 00:46:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:46:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:46:04,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:46:04,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597589618] [2021-03-11 00:46:04,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:46:04,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:46:04,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674688249] [2021-03-11 00:46:04,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:46:04,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:46:04,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:46:04,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:46:04,912 INFO L87 Difference]: Start difference. First operand 4338 states and 14638 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:46:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:46:10,697 INFO L93 Difference]: Finished difference Result 4752 states and 15968 transitions. [2021-03-11 00:46:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:46:10,701 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:46:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:46:10,709 INFO L225 Difference]: With dead ends: 4752 [2021-03-11 00:46:10,710 INFO L226 Difference]: Without dead ends: 4691 [2021-03-11 00:46:10,710 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 3398.7ms TimeCoverageRelationStatistics Valid=291, Invalid=2789, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 00:46:10,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-03-11 00:46:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4326. [2021-03-11 00:46:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3757225433526012) internal successors, (14600), 4325 states have internal predecessors, (14600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:46:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14600 transitions. [2021-03-11 00:46:10,774 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14600 transitions. Word has length 39 [2021-03-11 00:46:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:46:10,774 INFO L480 AbstractCegarLoop]: Abstraction has 4326 states and 14600 transitions. [2021-03-11 00:46:10,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:46:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14600 transitions. [2021-03-11 00:46:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:46:10,804 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:46:10,804 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:46:10,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-03-11 00:46:10,804 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:46:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:46:10,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1071420726, now seen corresponding path program 176 times [2021-03-11 00:46:10,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:46:10,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779030891] [2021-03-11 00:46:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:46:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:46:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:46:11,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779030891] [2021-03-11 00:46:11,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:46:11,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:46:11,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589176916] [2021-03-11 00:46:11,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:46:11,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:46:11,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:46:11,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:46:11,465 INFO L87 Difference]: Start difference. First operand 4326 states and 14600 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:46:17,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:46:17,213 INFO L93 Difference]: Finished difference Result 4727 states and 15862 transitions. [2021-03-11 00:46:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-11 00:46:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:46:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:46:17,224 INFO L225 Difference]: With dead ends: 4727 [2021-03-11 00:46:17,224 INFO L226 Difference]: Without dead ends: 4597 [2021-03-11 00:46:17,225 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 3246.5ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 00:46:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2021-03-11 00:46:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 4302. [2021-03-11 00:46:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4301 states have (on average 3.377819111834457) internal successors, (14528), 4301 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:46:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 14528 transitions. [2021-03-11 00:46:17,278 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 14528 transitions. Word has length 39 [2021-03-11 00:46:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:46:17,279 INFO L480 AbstractCegarLoop]: Abstraction has 4302 states and 14528 transitions. [2021-03-11 00:46:17,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:46:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 14528 transitions. [2021-03-11 00:46:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:46:17,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:46:17,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:46:17,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-03-11 00:46:17,283 INFO L428 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:46:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:46:17,283 INFO L82 PathProgramCache]: Analyzing trace with hash 766531126, now seen corresponding path program 177 times [2021-03-11 00:46:17,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:46:17,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637091584] [2021-03-11 00:46:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:46:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:46:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:46:17,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637091584] [2021-03-11 00:46:17,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:46:17,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:46:17,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698807687] [2021-03-11 00:46:17,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:46:17,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:46:17,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:46:17,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:46:17,957 INFO L87 Difference]: Start difference. First operand 4302 states and 14528 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:46:23,229 INFO L93 Difference]: Finished difference Result 4711 states and 15809 transitions. [2021-03-11 00:46:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 00:46:23,233 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:46:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:46:23,240 INFO L225 Difference]: With dead ends: 4711 [2021-03-11 00:46:23,240 INFO L226 Difference]: Without dead ends: 4644 [2021-03-11 00:46:23,241 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 3020.9ms TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 00:46:23,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-03-11 00:46:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 4302. [2021-03-11 00:46:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4301 states have (on average 3.375029063008603) internal successors, (14516), 4301 states have internal predecessors, (14516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:46:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 14516 transitions. [2021-03-11 00:46:23,300 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 14516 transitions. Word has length 39 [2021-03-11 00:46:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:46:23,300 INFO L480 AbstractCegarLoop]: Abstraction has 4302 states and 14516 transitions. [2021-03-11 00:46:23,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:23,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 14516 transitions. [2021-03-11 00:46:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:46:23,305 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:46:23,306 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:46:23,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-03-11 00:46:23,306 INFO L428 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:46:23,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:46:23,306 INFO L82 PathProgramCache]: Analyzing trace with hash -953084844, now seen corresponding path program 178 times [2021-03-11 00:46:23,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:46:23,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508628503] [2021-03-11 00:46:23,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:46:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:46:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:46:24,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508628503] [2021-03-11 00:46:24,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:46:24,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:46:24,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196880519] [2021-03-11 00:46:24,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:46:24,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:46:24,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:46:24,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:46:24,056 INFO L87 Difference]: Start difference. First operand 4302 states and 14516 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:46:30,719 INFO L93 Difference]: Finished difference Result 4799 states and 16051 transitions. [2021-03-11 00:46:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 00:46:30,723 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:46:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:46:30,730 INFO L225 Difference]: With dead ends: 4799 [2021-03-11 00:46:30,730 INFO L226 Difference]: Without dead ends: 4738 [2021-03-11 00:46:30,731 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 4032.0ms TimeCoverageRelationStatistics Valid=345, Invalid=3437, Unknown=0, NotChecked=0, Total=3782 [2021-03-11 00:46:30,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2021-03-11 00:46:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4290. [2021-03-11 00:46:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.377477267428305) internal successors, (14486), 4289 states have internal predecessors, (14486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:46:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 14486 transitions. [2021-03-11 00:46:30,786 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 14486 transitions. Word has length 39 [2021-03-11 00:46:30,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:46:30,786 INFO L480 AbstractCegarLoop]: Abstraction has 4290 states and 14486 transitions. [2021-03-11 00:46:30,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:30,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 14486 transitions. [2021-03-11 00:46:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:46:30,791 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:46:30,791 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:46:30,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-03-11 00:46:30,791 INFO L428 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:46:30,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:46:30,791 INFO L82 PathProgramCache]: Analyzing trace with hash -2113248746, now seen corresponding path program 179 times [2021-03-11 00:46:30,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:46:30,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129159708] [2021-03-11 00:46:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:46:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:46:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:46:31,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129159708] [2021-03-11 00:46:31,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:46:31,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:46:31,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680549051] [2021-03-11 00:46:31,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:46:31,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:46:31,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:46:31,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:46:31,545 INFO L87 Difference]: Start difference. First operand 4290 states and 14486 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:46:35,785 INFO L93 Difference]: Finished difference Result 4597 states and 15444 transitions. [2021-03-11 00:46:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 00:46:35,788 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:46:35,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:46:35,796 INFO L225 Difference]: With dead ends: 4597 [2021-03-11 00:46:35,796 INFO L226 Difference]: Without dead ends: 4530 [2021-03-11 00:46:35,796 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2556.3ms TimeCoverageRelationStatistics Valid=205, Invalid=1775, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 00:46:35,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4530 states. [2021-03-11 00:46:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4530 to 4298. [2021-03-11 00:46:35,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.3749127298114963) internal successors, (14502), 4297 states have internal predecessors, (14502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:46:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 14502 transitions. [2021-03-11 00:46:35,850 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 14502 transitions. Word has length 39 [2021-03-11 00:46:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:46:35,850 INFO L480 AbstractCegarLoop]: Abstraction has 4298 states and 14502 transitions. [2021-03-11 00:46:35,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 14502 transitions. [2021-03-11 00:46:35,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:46:35,854 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:46:35,855 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:46:35,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-03-11 00:46:35,855 INFO L428 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:46:35,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:46:35,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2051123702, now seen corresponding path program 180 times [2021-03-11 00:46:35,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:46:35,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801172811] [2021-03-11 00:46:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:46:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:46:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:46:36,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801172811] [2021-03-11 00:46:36,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:46:36,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:46:36,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559071504] [2021-03-11 00:46:36,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:46:36,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:46:36,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:46:36,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:46:36,572 INFO L87 Difference]: Start difference. First operand 4298 states and 14502 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:46:40,976 INFO L93 Difference]: Finished difference Result 4585 states and 15404 transitions. [2021-03-11 00:46:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:46:40,980 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:46:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:46:40,987 INFO L225 Difference]: With dead ends: 4585 [2021-03-11 00:46:40,987 INFO L226 Difference]: Without dead ends: 4522 [2021-03-11 00:46:40,987 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2601.2ms TimeCoverageRelationStatistics Valid=211, Invalid=1859, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:46:41,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2021-03-11 00:46:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4290. [2021-03-11 00:46:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.376544649102355) internal successors, (14482), 4289 states have internal predecessors, (14482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:46:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 14482 transitions. [2021-03-11 00:46:41,047 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 14482 transitions. Word has length 39 [2021-03-11 00:46:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:46:41,047 INFO L480 AbstractCegarLoop]: Abstraction has 4290 states and 14482 transitions. [2021-03-11 00:46:41,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 14482 transitions. [2021-03-11 00:46:41,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:46:41,052 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:46:41,052 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:46:41,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-03-11 00:46:41,053 INFO L428 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:46:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:46:41,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1915445110, now seen corresponding path program 181 times [2021-03-11 00:46:41,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:46:41,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501850045] [2021-03-11 00:46:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:46:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:46:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:46:41,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501850045] [2021-03-11 00:46:41,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:46:41,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:46:41,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899175611] [2021-03-11 00:46:41,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:46:41,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:46:41,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:46:41,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:46:41,806 INFO L87 Difference]: Start difference. First operand 4290 states and 14482 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:47,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:46:47,650 INFO L93 Difference]: Finished difference Result 4691 states and 15658 transitions. [2021-03-11 00:46:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:46:47,654 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:46:47,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:46:47,661 INFO L225 Difference]: With dead ends: 4691 [2021-03-11 00:46:47,661 INFO L226 Difference]: Without dead ends: 4642 [2021-03-11 00:46:47,662 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 3622.4ms TimeCoverageRelationStatistics Valid=302, Invalid=2778, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 00:46:47,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2021-03-11 00:46:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 4284. [2021-03-11 00:46:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4283 states have (on average 3.3777725893065607) internal successors, (14467), 4283 states have internal predecessors, (14467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:46:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 14467 transitions. [2021-03-11 00:46:47,717 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 14467 transitions. Word has length 39 [2021-03-11 00:46:47,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:46:47,717 INFO L480 AbstractCegarLoop]: Abstraction has 4284 states and 14467 transitions. [2021-03-11 00:46:47,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 14467 transitions. [2021-03-11 00:46:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:46:47,721 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:46:47,721 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:46:47,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-03-11 00:46:47,722 INFO L428 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:46:47,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:46:47,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1461038616, now seen corresponding path program 182 times [2021-03-11 00:46:47,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:46:47,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261276448] [2021-03-11 00:46:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:46:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:46:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:46:48,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261276448] [2021-03-11 00:46:48,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:46:48,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:46:48,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871262130] [2021-03-11 00:46:48,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:46:48,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:46:48,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:46:48,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:46:48,440 INFO L87 Difference]: Start difference. First operand 4284 states and 14467 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:46:53,325 INFO L93 Difference]: Finished difference Result 4619 states and 15474 transitions. [2021-03-11 00:46:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:46:53,329 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:46:53,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:46:53,336 INFO L225 Difference]: With dead ends: 4619 [2021-03-11 00:46:53,337 INFO L226 Difference]: Without dead ends: 4564 [2021-03-11 00:46:53,337 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 2851.0ms TimeCoverageRelationStatistics Valid=225, Invalid=1937, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:46:53,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-03-11 00:46:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4284. [2021-03-11 00:46:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4283 states have (on average 3.377305626897035) internal successors, (14465), 4283 states have internal predecessors, (14465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:46:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 14465 transitions. [2021-03-11 00:46:53,398 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 14465 transitions. Word has length 39 [2021-03-11 00:46:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:46:53,398 INFO L480 AbstractCegarLoop]: Abstraction has 4284 states and 14465 transitions. [2021-03-11 00:46:53,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 14465 transitions. [2021-03-11 00:46:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:46:53,403 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:46:53,403 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:46:53,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-03-11 00:46:53,403 INFO L428 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:46:53,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:46:53,403 INFO L82 PathProgramCache]: Analyzing trace with hash -288386394, now seen corresponding path program 183 times [2021-03-11 00:46:53,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:46:53,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020244300] [2021-03-11 00:46:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:46:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:46:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:46:54,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020244300] [2021-03-11 00:46:54,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:46:54,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:46:54,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620786302] [2021-03-11 00:46:54,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:46:54,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:46:54,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:46:54,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:46:54,154 INFO L87 Difference]: Start difference. First operand 4284 states and 14465 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:58,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:46:58,500 INFO L93 Difference]: Finished difference Result 4562 states and 15342 transitions. [2021-03-11 00:46:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:46:58,504 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:46:58,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:46:58,511 INFO L225 Difference]: With dead ends: 4562 [2021-03-11 00:46:58,511 INFO L226 Difference]: Without dead ends: 4506 [2021-03-11 00:46:58,511 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 2601.0ms TimeCoverageRelationStatistics Valid=211, Invalid=1769, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 00:46:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-03-11 00:46:58,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4274. [2021-03-11 00:46:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 4273 states have (on average 3.3802948747952257) internal successors, (14444), 4273 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:46:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 14444 transitions. [2021-03-11 00:46:58,565 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 14444 transitions. Word has length 39 [2021-03-11 00:46:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:46:58,565 INFO L480 AbstractCegarLoop]: Abstraction has 4274 states and 14444 transitions. [2021-03-11 00:46:58,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:46:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 14444 transitions. [2021-03-11 00:46:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:46:58,569 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:46:58,569 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:46:58,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-03-11 00:46:58,569 INFO L428 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:46:58,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:46:58,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1953661928, now seen corresponding path program 184 times [2021-03-11 00:46:58,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:46:58,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172291831] [2021-03-11 00:46:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:46:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:46:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:46:59,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172291831] [2021-03-11 00:46:59,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:46:59,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:46:59,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949779338] [2021-03-11 00:46:59,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:46:59,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:46:59,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:46:59,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:46:59,263 INFO L87 Difference]: Start difference. First operand 4274 states and 14444 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:47:06,183 INFO L93 Difference]: Finished difference Result 4832 states and 16094 transitions. [2021-03-11 00:47:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-11 00:47:06,186 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:47:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:47:06,193 INFO L225 Difference]: With dead ends: 4832 [2021-03-11 00:47:06,193 INFO L226 Difference]: Without dead ends: 4695 [2021-03-11 00:47:06,194 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 3873.9ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-03-11 00:47:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2021-03-11 00:47:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4278. [2021-03-11 00:47:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.37947159223755) internal successors, (14454), 4277 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:47:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14454 transitions. [2021-03-11 00:47:06,246 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14454 transitions. Word has length 39 [2021-03-11 00:47:06,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:47:06,247 INFO L480 AbstractCegarLoop]: Abstraction has 4278 states and 14454 transitions. [2021-03-11 00:47:06,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14454 transitions. [2021-03-11 00:47:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:47:06,251 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:47:06,251 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:47:06,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-03-11 00:47:06,251 INFO L428 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:47:06,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:47:06,251 INFO L82 PathProgramCache]: Analyzing trace with hash 458771028, now seen corresponding path program 185 times [2021-03-11 00:47:06,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:47:06,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824520582] [2021-03-11 00:47:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:47:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:47:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:47:06,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824520582] [2021-03-11 00:47:06,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:47:06,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:47:06,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131490931] [2021-03-11 00:47:06,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:47:06,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:47:06,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:47:06,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:47:06,959 INFO L87 Difference]: Start difference. First operand 4278 states and 14454 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:47:13,261 INFO L93 Difference]: Finished difference Result 4810 states and 15960 transitions. [2021-03-11 00:47:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 00:47:13,264 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:47:13,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:47:13,272 INFO L225 Difference]: With dead ends: 4810 [2021-03-11 00:47:13,272 INFO L226 Difference]: Without dead ends: 4746 [2021-03-11 00:47:13,272 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 3767.5ms TimeCoverageRelationStatistics Valid=293, Invalid=2787, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 00:47:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2021-03-11 00:47:13,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 4278. [2021-03-11 00:47:13,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.37947159223755) internal successors, (14454), 4277 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:47:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14454 transitions. [2021-03-11 00:47:13,327 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14454 transitions. Word has length 39 [2021-03-11 00:47:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:47:13,327 INFO L480 AbstractCegarLoop]: Abstraction has 4278 states and 14454 transitions. [2021-03-11 00:47:13,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14454 transitions. [2021-03-11 00:47:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:47:13,331 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:47:13,331 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:47:13,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-03-11 00:47:13,331 INFO L428 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:47:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:47:13,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1377254598, now seen corresponding path program 186 times [2021-03-11 00:47:13,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:47:13,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134983834] [2021-03-11 00:47:13,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:47:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:47:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:47:14,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134983834] [2021-03-11 00:47:14,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:47:14,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:47:14,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053346174] [2021-03-11 00:47:14,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:47:14,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:47:14,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:47:14,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:47:14,045 INFO L87 Difference]: Start difference. First operand 4278 states and 14454 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:47:18,774 INFO L93 Difference]: Finished difference Result 4716 states and 15712 transitions. [2021-03-11 00:47:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 00:47:18,777 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:47:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:47:18,784 INFO L225 Difference]: With dead ends: 4716 [2021-03-11 00:47:18,784 INFO L226 Difference]: Without dead ends: 4661 [2021-03-11 00:47:18,785 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 2689.4ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:47:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2021-03-11 00:47:18,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4280. [2021-03-11 00:47:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4279 states have (on average 3.378593129235803) internal successors, (14457), 4279 states have internal predecessors, (14457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:47:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 14457 transitions. [2021-03-11 00:47:18,838 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 14457 transitions. Word has length 39 [2021-03-11 00:47:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:47:18,838 INFO L480 AbstractCegarLoop]: Abstraction has 4280 states and 14457 transitions. [2021-03-11 00:47:18,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 14457 transitions. [2021-03-11 00:47:18,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:47:18,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:47:18,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:47:18,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-03-11 00:47:18,843 INFO L428 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:47:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:47:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1745060476, now seen corresponding path program 187 times [2021-03-11 00:47:18,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:47:18,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256332452] [2021-03-11 00:47:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:47:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:47:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:47:19,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256332452] [2021-03-11 00:47:19,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:47:19,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:47:19,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033140530] [2021-03-11 00:47:19,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:47:19,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:47:19,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:47:19,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:47:19,567 INFO L87 Difference]: Start difference. First operand 4280 states and 14457 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:47:24,726 INFO L93 Difference]: Finished difference Result 4686 states and 15651 transitions. [2021-03-11 00:47:24,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 00:47:24,730 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:47:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:47:24,737 INFO L225 Difference]: With dead ends: 4686 [2021-03-11 00:47:24,737 INFO L226 Difference]: Without dead ends: 4626 [2021-03-11 00:47:24,737 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 2982.7ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:47:24,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2021-03-11 00:47:24,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4278. [2021-03-11 00:47:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.3790039747486555) internal successors, (14452), 4277 states have internal predecessors, (14452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:47:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14452 transitions. [2021-03-11 00:47:24,790 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14452 transitions. Word has length 39 [2021-03-11 00:47:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:47:24,790 INFO L480 AbstractCegarLoop]: Abstraction has 4278 states and 14452 transitions. [2021-03-11 00:47:24,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14452 transitions. [2021-03-11 00:47:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:47:24,794 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:47:24,794 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:47:24,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-03-11 00:47:24,795 INFO L428 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:47:24,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:47:24,795 INFO L82 PathProgramCache]: Analyzing trace with hash 470340278, now seen corresponding path program 188 times [2021-03-11 00:47:24,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:47:24,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837687648] [2021-03-11 00:47:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:47:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:47:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:47:25,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837687648] [2021-03-11 00:47:25,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:47:25,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:47:25,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497051239] [2021-03-11 00:47:25,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:47:25,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:47:25,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:47:25,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:47:25,442 INFO L87 Difference]: Start difference. First operand 4278 states and 14452 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:47:29,536 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2021-03-11 00:47:29,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:47:29,965 INFO L93 Difference]: Finished difference Result 4597 states and 15438 transitions. [2021-03-11 00:47:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 00:47:29,970 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:47:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:47:29,978 INFO L225 Difference]: With dead ends: 4597 [2021-03-11 00:47:29,978 INFO L226 Difference]: Without dead ends: 4521 [2021-03-11 00:47:29,978 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2609.9ms TimeCoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:47:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-03-11 00:47:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4286. [2021-03-11 00:47:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 3.3764294049008168) internal successors, (14468), 4285 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:47:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 14468 transitions. [2021-03-11 00:47:30,033 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 14468 transitions. Word has length 39 [2021-03-11 00:47:30,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:47:30,033 INFO L480 AbstractCegarLoop]: Abstraction has 4286 states and 14468 transitions. [2021-03-11 00:47:30,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:47:30,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 14468 transitions. [2021-03-11 00:47:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:47:30,037 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:47:30,037 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:47:30,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-03-11 00:47:30,037 INFO L428 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:47:30,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:47:30,038 INFO L82 PathProgramCache]: Analyzing trace with hash -547713334, now seen corresponding path program 189 times [2021-03-11 00:47:30,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:47:30,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110746823] [2021-03-11 00:47:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:47:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:47:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:47:30,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110746823] [2021-03-11 00:47:30,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:47:30,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:47:30,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918145594] [2021-03-11 00:47:30,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:47:30,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:47:30,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:47:30,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:47:30,825 INFO L87 Difference]: Start difference. First operand 4286 states and 14468 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:35,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:47:35,845 INFO L93 Difference]: Finished difference Result 4579 states and 15384 transitions. [2021-03-11 00:47:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 00:47:35,848 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:47:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:47:35,856 INFO L225 Difference]: With dead ends: 4579 [2021-03-11 00:47:35,856 INFO L226 Difference]: Without dead ends: 4501 [2021-03-11 00:47:35,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 2912.5ms TimeCoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:47:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2021-03-11 00:47:35,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 4266. [2021-03-11 00:47:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4266 states, 4265 states have (on average 3.381008206330598) internal successors, (14420), 4265 states have internal predecessors, (14420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:47:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 14420 transitions. [2021-03-11 00:47:35,909 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 14420 transitions. Word has length 39 [2021-03-11 00:47:35,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:47:35,909 INFO L480 AbstractCegarLoop]: Abstraction has 4266 states and 14420 transitions. [2021-03-11 00:47:35,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 14420 transitions. [2021-03-11 00:47:35,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:47:35,914 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:47:35,914 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:47:35,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-03-11 00:47:35,914 INFO L428 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:47:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:47:35,914 INFO L82 PathProgramCache]: Analyzing trace with hash -358048246, now seen corresponding path program 190 times [2021-03-11 00:47:35,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:47:35,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649033624] [2021-03-11 00:47:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:47:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:47:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:47:36,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649033624] [2021-03-11 00:47:36,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:47:36,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:47:36,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077834378] [2021-03-11 00:47:36,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:47:36,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:47:36,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:47:36,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:47:36,661 INFO L87 Difference]: Start difference. First operand 4266 states and 14420 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:43,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:47:43,888 INFO L93 Difference]: Finished difference Result 4817 states and 16072 transitions. [2021-03-11 00:47:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-11 00:47:43,890 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:47:43,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:47:43,897 INFO L225 Difference]: With dead ends: 4817 [2021-03-11 00:47:43,897 INFO L226 Difference]: Without dead ends: 4711 [2021-03-11 00:47:43,898 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 3992.2ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 00:47:43,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-03-11 00:47:43,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4288. [2021-03-11 00:47:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4287 states have (on average 3.3813855843247027) internal successors, (14496), 4287 states have internal predecessors, (14496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:47:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 14496 transitions. [2021-03-11 00:47:43,952 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 14496 transitions. Word has length 39 [2021-03-11 00:47:43,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:47:43,952 INFO L480 AbstractCegarLoop]: Abstraction has 4288 states and 14496 transitions. [2021-03-11 00:47:43,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:43,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 14496 transitions. [2021-03-11 00:47:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:47:43,956 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:47:43,956 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:47:43,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-03-11 00:47:43,956 INFO L428 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:47:43,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:47:43,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1852939146, now seen corresponding path program 191 times [2021-03-11 00:47:43,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:47:43,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367331355] [2021-03-11 00:47:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:47:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:47:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:47:44,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367331355] [2021-03-11 00:47:44,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:47:44,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:47:44,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695114996] [2021-03-11 00:47:44,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:47:44,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:47:44,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:47:44,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:47:44,685 INFO L87 Difference]: Start difference. First operand 4288 states and 14496 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:46,010 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-03-11 00:47:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:47:50,710 INFO L93 Difference]: Finished difference Result 4854 states and 16096 transitions. [2021-03-11 00:47:50,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-11 00:47:50,714 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:47:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:47:50,721 INFO L225 Difference]: With dead ends: 4854 [2021-03-11 00:47:50,721 INFO L226 Difference]: Without dead ends: 4790 [2021-03-11 00:47:50,722 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 3645.7ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 00:47:50,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-03-11 00:47:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4304. [2021-03-11 00:47:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4303 states have (on average 3.380897048570765) internal successors, (14548), 4303 states have internal predecessors, (14548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:47:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14548 transitions. [2021-03-11 00:47:50,775 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14548 transitions. Word has length 39 [2021-03-11 00:47:50,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:47:50,775 INFO L480 AbstractCegarLoop]: Abstraction has 4304 states and 14548 transitions. [2021-03-11 00:47:50,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14548 transitions. [2021-03-11 00:47:50,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:47:50,780 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:47:50,780 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:47:50,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-03-11 00:47:50,780 INFO L428 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:47:50,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:47:50,780 INFO L82 PathProgramCache]: Analyzing trace with hash -934455576, now seen corresponding path program 192 times [2021-03-11 00:47:50,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:47:50,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910822991] [2021-03-11 00:47:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:47:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:47:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:47:51,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910822991] [2021-03-11 00:47:51,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:47:51,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:47:51,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718523206] [2021-03-11 00:47:51,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:47:51,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:47:51,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:47:51,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:47:51,512 INFO L87 Difference]: Start difference. First operand 4304 states and 14548 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:47:56,705 INFO L93 Difference]: Finished difference Result 4752 states and 15828 transitions. [2021-03-11 00:47:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 00:47:56,709 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:47:56,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:47:56,716 INFO L225 Difference]: With dead ends: 4752 [2021-03-11 00:47:56,716 INFO L226 Difference]: Without dead ends: 4709 [2021-03-11 00:47:56,716 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 2847.4ms TimeCoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 00:47:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2021-03-11 00:47:56,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4310. [2021-03-11 00:47:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4309 states have (on average 3.379206312369459) internal successors, (14561), 4309 states have internal predecessors, (14561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:47:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 14561 transitions. [2021-03-11 00:47:56,769 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 14561 transitions. Word has length 39 [2021-03-11 00:47:56,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:47:56,769 INFO L480 AbstractCegarLoop]: Abstraction has 4310 states and 14561 transitions. [2021-03-11 00:47:56,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:47:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 14561 transitions. [2021-03-11 00:47:56,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:47:56,774 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:47:56,774 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:47:56,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-03-11 00:47:56,774 INFO L428 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:47:56,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:47:56,775 INFO L82 PathProgramCache]: Analyzing trace with hash -914306842, now seen corresponding path program 193 times [2021-03-11 00:47:56,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:47:56,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224135253] [2021-03-11 00:47:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:47:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:47:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:47:57,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224135253] [2021-03-11 00:47:57,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:47:57,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:47:57,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641056863] [2021-03-11 00:47:57,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:47:57,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:47:57,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:47:57,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:47:57,509 INFO L87 Difference]: Start difference. First operand 4310 states and 14561 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:01,892 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-03-11 00:48:02,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:48:02,841 INFO L93 Difference]: Finished difference Result 4723 states and 15772 transitions. [2021-03-11 00:48:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 00:48:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:48:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:48:02,852 INFO L225 Difference]: With dead ends: 4723 [2021-03-11 00:48:02,852 INFO L226 Difference]: Without dead ends: 4680 [2021-03-11 00:48:02,852 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 3176.4ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 00:48:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2021-03-11 00:48:02,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4306. [2021-03-11 00:48:02,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 4305 states have (on average 3.3800232288037164) internal successors, (14551), 4305 states have internal predecessors, (14551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:48:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 14551 transitions. [2021-03-11 00:48:02,906 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 14551 transitions. Word has length 39 [2021-03-11 00:48:02,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:48:02,906 INFO L480 AbstractCegarLoop]: Abstraction has 4306 states and 14551 transitions. [2021-03-11 00:48:02,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 14551 transitions. [2021-03-11 00:48:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:48:02,911 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:48:02,911 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:48:02,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-03-11 00:48:02,911 INFO L428 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:48:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:48:02,911 INFO L82 PathProgramCache]: Analyzing trace with hash 238196646, now seen corresponding path program 194 times [2021-03-11 00:48:02,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:48:02,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772280264] [2021-03-11 00:48:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:48:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:48:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:48:03,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772280264] [2021-03-11 00:48:03,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:48:03,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:48:03,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357648961] [2021-03-11 00:48:03,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:48:03,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:48:03,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:48:03,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:48:03,636 INFO L87 Difference]: Start difference. First operand 4306 states and 14551 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:08,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:48:08,631 INFO L93 Difference]: Finished difference Result 4730 states and 15787 transitions. [2021-03-11 00:48:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 00:48:08,635 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:48:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:48:08,642 INFO L225 Difference]: With dead ends: 4730 [2021-03-11 00:48:08,642 INFO L226 Difference]: Without dead ends: 4670 [2021-03-11 00:48:08,643 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 2905.1ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:48:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-03-11 00:48:08,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 4304. [2021-03-11 00:48:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4303 states have (on average 3.380432256565187) internal successors, (14546), 4303 states have internal predecessors, (14546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:48:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14546 transitions. [2021-03-11 00:48:08,696 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14546 transitions. Word has length 39 [2021-03-11 00:48:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:48:08,696 INFO L480 AbstractCegarLoop]: Abstraction has 4304 states and 14546 transitions. [2021-03-11 00:48:08,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14546 transitions. [2021-03-11 00:48:08,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:48:08,701 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:48:08,701 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:48:08,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-03-11 00:48:08,701 INFO L428 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:48:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:48:08,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1841369896, now seen corresponding path program 195 times [2021-03-11 00:48:08,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:48:08,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90288614] [2021-03-11 00:48:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:48:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:48:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:48:09,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90288614] [2021-03-11 00:48:09,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:48:09,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:48:09,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520319864] [2021-03-11 00:48:09,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:48:09,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:48:09,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:48:09,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:48:09,411 INFO L87 Difference]: Start difference. First operand 4304 states and 14546 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:48:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:48:14,004 INFO L93 Difference]: Finished difference Result 4698 states and 15727 transitions. [2021-03-11 00:48:14,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 00:48:14,007 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:48:14,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:48:14,015 INFO L225 Difference]: With dead ends: 4698 [2021-03-11 00:48:14,015 INFO L226 Difference]: Without dead ends: 4622 [2021-03-11 00:48:14,015 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 2611.0ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 00:48:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2021-03-11 00:48:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4312. [2021-03-11 00:48:14,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4311 states have (on average 3.3778705636743216) internal successors, (14562), 4311 states have internal predecessors, (14562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:48:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 14562 transitions. [2021-03-11 00:48:14,069 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 14562 transitions. Word has length 39 [2021-03-11 00:48:14,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:48:14,069 INFO L480 AbstractCegarLoop]: Abstraction has 4312 states and 14562 transitions. [2021-03-11 00:48:14,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:48:14,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 14562 transitions. [2021-03-11 00:48:14,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:48:14,073 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:48:14,073 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:48:14,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-03-11 00:48:14,074 INFO L428 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:48:14,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:48:14,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1435543788, now seen corresponding path program 196 times [2021-03-11 00:48:14,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:48:14,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121585882] [2021-03-11 00:48:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:48:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:48:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:48:14,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121585882] [2021-03-11 00:48:14,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:48:14,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:48:14,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225591362] [2021-03-11 00:48:14,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:48:14,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:48:14,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:48:14,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:48:14,828 INFO L87 Difference]: Start difference. First operand 4312 states and 14562 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:19,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:48:19,568 INFO L93 Difference]: Finished difference Result 4680 states and 15673 transitions. [2021-03-11 00:48:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 00:48:19,572 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:48:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:48:19,580 INFO L225 Difference]: With dead ends: 4680 [2021-03-11 00:48:19,580 INFO L226 Difference]: Without dead ends: 4610 [2021-03-11 00:48:19,580 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2730.9ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 00:48:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2021-03-11 00:48:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4300. [2021-03-11 00:48:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3807862293556643) internal successors, (14534), 4299 states have internal predecessors, (14534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:48:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-03-11 00:48:19,634 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-03-11 00:48:19,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:48:19,634 INFO L480 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-03-11 00:48:19,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-03-11 00:48:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:48:19,639 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:48:19,639 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:48:19,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-03-11 00:48:19,639 INFO L428 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:48:19,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:48:19,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2013239828, now seen corresponding path program 197 times [2021-03-11 00:48:19,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:48:19,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113436460] [2021-03-11 00:48:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:48:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:48:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:48:20,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113436460] [2021-03-11 00:48:20,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:48:20,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:48:20,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076856238] [2021-03-11 00:48:20,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:48:20,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:48:20,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:48:20,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:48:20,406 INFO L87 Difference]: Start difference. First operand 4300 states and 14534 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:48:29,018 INFO L93 Difference]: Finished difference Result 6858 states and 23172 transitions. [2021-03-11 00:48:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-03-11 00:48:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:48:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:48:29,033 INFO L225 Difference]: With dead ends: 6858 [2021-03-11 00:48:29,033 INFO L226 Difference]: Without dead ends: 6815 [2021-03-11 00:48:29,033 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 4700.7ms TimeCoverageRelationStatistics Valid=380, Invalid=3910, Unknown=0, NotChecked=0, Total=4290 [2021-03-11 00:48:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-03-11 00:48:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 4326. [2021-03-11 00:48:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3796531791907514) internal successors, (14617), 4325 states have internal predecessors, (14617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:48:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14617 transitions. [2021-03-11 00:48:29,097 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14617 transitions. Word has length 39 [2021-03-11 00:48:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:48:29,097 INFO L480 AbstractCegarLoop]: Abstraction has 4326 states and 14617 transitions. [2021-03-11 00:48:29,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14617 transitions. [2021-03-11 00:48:29,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:48:29,101 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:48:29,101 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:48:29,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-03-11 00:48:29,101 INFO L428 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:48:29,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:48:29,102 INFO L82 PathProgramCache]: Analyzing trace with hash 501129166, now seen corresponding path program 198 times [2021-03-11 00:48:29,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:48:29,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625599192] [2021-03-11 00:48:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:48:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:48:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:48:29,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625599192] [2021-03-11 00:48:29,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:48:29,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:48:29,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484246612] [2021-03-11 00:48:29,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:48:29,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:48:29,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:48:29,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:48:29,885 INFO L87 Difference]: Start difference. First operand 4326 states and 14617 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:48:39,952 INFO L93 Difference]: Finished difference Result 7715 states and 26114 transitions. [2021-03-11 00:48:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-03-11 00:48:39,956 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:48:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:48:39,969 INFO L225 Difference]: With dead ends: 7715 [2021-03-11 00:48:39,969 INFO L226 Difference]: Without dead ends: 7663 [2021-03-11 00:48:39,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 5397.9ms TimeCoverageRelationStatistics Valid=429, Invalid=4827, Unknown=0, NotChecked=0, Total=5256 [2021-03-11 00:48:39,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7663 states. [2021-03-11 00:48:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7663 to 4300. [2021-03-11 00:48:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3807862293556643) internal successors, (14534), 4299 states have internal predecessors, (14534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:48:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-03-11 00:48:40,038 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-03-11 00:48:40,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:48:40,038 INFO L480 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-03-11 00:48:40,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:40,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-03-11 00:48:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:48:40,043 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:48:40,043 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:48:40,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-03-11 00:48:40,043 INFO L428 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:48:40,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:48:40,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1094756258, now seen corresponding path program 199 times [2021-03-11 00:48:40,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:48:40,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137390575] [2021-03-11 00:48:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:48:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:48:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:48:40,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137390575] [2021-03-11 00:48:40,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:48:40,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:48:40,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814858919] [2021-03-11 00:48:40,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:48:40,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:48:40,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:48:40,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:48:40,858 INFO L87 Difference]: Start difference. First operand 4300 states and 14534 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:48:47,246 INFO L93 Difference]: Finished difference Result 6351 states and 21238 transitions. [2021-03-11 00:48:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 00:48:47,250 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:48:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:48:47,260 INFO L225 Difference]: With dead ends: 6351 [2021-03-11 00:48:47,260 INFO L226 Difference]: Without dead ends: 6296 [2021-03-11 00:48:47,260 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 3194.3ms TimeCoverageRelationStatistics Valid=232, Invalid=2120, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 00:48:47,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2021-03-11 00:48:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 4320. [2021-03-11 00:48:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4320 states, 4319 states have (on average 3.3804121324380643) internal successors, (14600), 4319 states have internal predecessors, (14600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:48:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 14600 transitions. [2021-03-11 00:48:47,322 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 14600 transitions. Word has length 39 [2021-03-11 00:48:47,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:48:47,322 INFO L480 AbstractCegarLoop]: Abstraction has 4320 states and 14600 transitions. [2021-03-11 00:48:47,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 14600 transitions. [2021-03-11 00:48:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:48:47,326 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:48:47,326 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:48:47,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-03-11 00:48:47,326 INFO L428 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:48:47,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:48:47,327 INFO L82 PathProgramCache]: Analyzing trace with hash 77895964, now seen corresponding path program 200 times [2021-03-11 00:48:47,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:48:47,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240322030] [2021-03-11 00:48:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:48:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:48:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:48:48,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240322030] [2021-03-11 00:48:48,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:48:48,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:48:48,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144513758] [2021-03-11 00:48:48,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:48:48,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:48:48,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:48:48,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:48:48,121 INFO L87 Difference]: Start difference. First operand 4320 states and 14600 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:48:56,555 INFO L93 Difference]: Finished difference Result 7052 states and 23686 transitions. [2021-03-11 00:48:56,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 00:48:56,559 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:48:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:48:56,570 INFO L225 Difference]: With dead ends: 7052 [2021-03-11 00:48:56,570 INFO L226 Difference]: Without dead ends: 6992 [2021-03-11 00:48:56,571 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 4189.6ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-03-11 00:48:56,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6992 states. [2021-03-11 00:48:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6992 to 4318. [2021-03-11 00:48:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4317 states have (on average 3.3808200138985405) internal successors, (14595), 4317 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:48:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14595 transitions. [2021-03-11 00:48:56,638 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14595 transitions. Word has length 39 [2021-03-11 00:48:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:48:56,638 INFO L480 AbstractCegarLoop]: Abstraction has 4318 states and 14595 transitions. [2021-03-11 00:48:56,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:48:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14595 transitions. [2021-03-11 00:48:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:48:56,643 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:48:56,643 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:48:56,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-03-11 00:48:56,643 INFO L428 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:48:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:48:56,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1799507638, now seen corresponding path program 201 times [2021-03-11 00:48:56,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:48:56,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290451667] [2021-03-11 00:48:56,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:48:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:48:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:48:57,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290451667] [2021-03-11 00:48:57,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:48:57,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:48:57,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662579887] [2021-03-11 00:48:57,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:48:57,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:48:57,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:48:57,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:48:57,472 INFO L87 Difference]: Start difference. First operand 4318 states and 14595 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:49:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:49:03,916 INFO L93 Difference]: Finished difference Result 6272 states and 21064 transitions. [2021-03-11 00:49:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 00:49:03,920 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:49:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:49:03,930 INFO L225 Difference]: With dead ends: 6272 [2021-03-11 00:49:03,930 INFO L226 Difference]: Without dead ends: 6181 [2021-03-11 00:49:03,931 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 3113.1ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 00:49:03,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2021-03-11 00:49:04,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 4318. [2021-03-11 00:49:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4317 states have (on average 3.3794301598332175) internal successors, (14589), 4317 states have internal predecessors, (14589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:49:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14589 transitions. [2021-03-11 00:49:04,012 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14589 transitions. Word has length 39 [2021-03-11 00:49:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:49:04,012 INFO L480 AbstractCegarLoop]: Abstraction has 4318 states and 14589 transitions. [2021-03-11 00:49:04,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:49:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14589 transitions. [2021-03-11 00:49:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:49:04,016 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:49:04,016 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:49:04,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-03-11 00:49:04,017 INFO L428 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:49:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:49:04,017 INFO L82 PathProgramCache]: Analyzing trace with hash 992977452, now seen corresponding path program 202 times [2021-03-11 00:49:04,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:49:04,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2211551] [2021-03-11 00:49:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:49:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:49:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:49:04,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2211551] [2021-03-11 00:49:04,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:49:04,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:49:04,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928806564] [2021-03-11 00:49:04,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:49:04,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:49:04,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:49:04,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:49:04,849 INFO L87 Difference]: Start difference. First operand 4318 states and 14589 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:49:13,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:49:13,895 INFO L93 Difference]: Finished difference Result 7142 states and 24051 transitions. [2021-03-11 00:49:13,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 00:49:13,899 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:49:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:49:13,910 INFO L225 Difference]: With dead ends: 7142 [2021-03-11 00:49:13,910 INFO L226 Difference]: Without dead ends: 7042 [2021-03-11 00:49:13,911 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 4341.7ms TimeCoverageRelationStatistics Valid=303, Invalid=3119, Unknown=0, NotChecked=0, Total=3422 [2021-03-11 00:49:13,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7042 states. [2021-03-11 00:49:13,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7042 to 4300. [2021-03-11 00:49:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3793905559432424) internal successors, (14528), 4299 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:49:13,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14528 transitions. [2021-03-11 00:49:13,976 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14528 transitions. Word has length 39 [2021-03-11 00:49:13,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:49:13,976 INFO L480 AbstractCegarLoop]: Abstraction has 4300 states and 14528 transitions. [2021-03-11 00:49:13,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:49:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14528 transitions. [2021-03-11 00:49:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:49:13,981 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:49:13,981 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:49:13,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-03-11 00:49:13,981 INFO L428 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:49:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:49:13,981 INFO L82 PathProgramCache]: Analyzing trace with hash 756352456, now seen corresponding path program 203 times [2021-03-11 00:49:13,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:49:13,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188531817] [2021-03-11 00:49:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:49:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:49:14,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:49:14,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188531817] [2021-03-11 00:49:14,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:49:14,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 00:49:14,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698672119] [2021-03-11 00:49:14,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 00:49:14,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:49:14,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 00:49:14,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-03-11 00:49:14,724 INFO L87 Difference]: Start difference. First operand 4300 states and 14528 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:49:19,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:49:19,053 INFO L93 Difference]: Finished difference Result 4629 states and 15530 transitions. [2021-03-11 00:49:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 00:49:19,058 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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 [2021-03-11 00:49:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:49:19,065 INFO L225 Difference]: With dead ends: 4629 [2021-03-11 00:49:19,065 INFO L226 Difference]: Without dead ends: 4553 [2021-03-11 00:49:19,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2479.1ms TimeCoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 00:49:19,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2021-03-11 00:49:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4332. [2021-03-11 00:49:19,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4331 states have (on average 3.3747402447471715) internal successors, (14616), 4331 states have internal predecessors, (14616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:49:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 14616 transitions. [2021-03-11 00:49:19,117 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 14616 transitions. Word has length 39 [2021-03-11 00:49:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:49:19,117 INFO L480 AbstractCegarLoop]: Abstraction has 4332 states and 14616 transitions. [2021-03-11 00:49:19,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2021-03-11 00:49:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 14616 transitions. [2021-03-11 00:49:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:49:19,121 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:49:19,121 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:49:19,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-03-11 00:49:19,121 INFO L428 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:49:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:49:19,122 INFO L82 PathProgramCache]: Analyzing trace with hash -261701156, now seen corresponding path program 204 times [2021-03-11 00:49:19,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:49:19,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932890718] [2021-03-11 00:49:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:49:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:49:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:49:19,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932890718] [2021-03-11 00:49:19,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:49:19,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:49:19,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181770288] [2021-03-11 00:49:19,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:49:19,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:49:19,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:49:19,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:49:19,950 INFO L87 Difference]: Start difference. First operand 4332 states and 14616 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:49:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:49:24,684 INFO L93 Difference]: Finished difference Result 4611 states and 15476 transitions. [2021-03-11 00:49:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:49:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:49:24,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:49:24,694 INFO L225 Difference]: With dead ends: 4611 [2021-03-11 00:49:24,694 INFO L226 Difference]: Without dead ends: 4545 [2021-03-11 00:49:24,695 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 2720.2ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:49:24,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2021-03-11 00:49:24,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4324. [2021-03-11 00:49:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4323 states have (on average 3.375433726578765) internal successors, (14592), 4323 states have internal predecessors, (14592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:49:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 14592 transitions. [2021-03-11 00:49:24,745 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 14592 transitions. Word has length 39 [2021-03-11 00:49:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:49:24,745 INFO L480 AbstractCegarLoop]: Abstraction has 4324 states and 14592 transitions. [2021-03-11 00:49:24,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:49:24,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 14592 transitions. [2021-03-11 00:49:24,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:49:24,750 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:49:24,750 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:49:24,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-03-11 00:49:24,750 INFO L428 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:49:24,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:49:24,750 INFO L82 PathProgramCache]: Analyzing trace with hash -543966810, now seen corresponding path program 205 times [2021-03-11 00:49:24,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:49:24,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898575932] [2021-03-11 00:49:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:49:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:49:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:49:25,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898575932] [2021-03-11 00:49:25,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:49:25,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 00:49:25,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391664658] [2021-03-11 00:49:25,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 00:49:25,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:49:25,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 00:49:25,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 00:49:25,513 INFO L87 Difference]: Start difference. First operand 4324 states and 14592 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:49:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:49:30,049 INFO L93 Difference]: Finished difference Result 4632 states and 15529 transitions. [2021-03-11 00:49:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 00:49:30,053 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-03-11 00:49:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:49:30,060 INFO L225 Difference]: With dead ends: 4632 [2021-03-11 00:49:30,060 INFO L226 Difference]: Without dead ends: 4470 [2021-03-11 00:49:30,061 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2615.0ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 00:49:30,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2021-03-11 00:49:30,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4256. [2021-03-11 00:49:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.38331374853114) internal successors, (14396), 4255 states have internal predecessors, (14396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:49:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14396 transitions. [2021-03-11 00:49:30,129 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14396 transitions. Word has length 39 [2021-03-11 00:49:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:49:30,130 INFO L480 AbstractCegarLoop]: Abstraction has 4256 states and 14396 transitions. [2021-03-11 00:49:30,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-03-11 00:49:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14396 transitions. [2021-03-11 00:49:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:49:30,134 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:49:30,134 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:49:30,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-03-11 00:49:30,134 INFO L428 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:49:30,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:49:30,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1485490904, now seen corresponding path program 206 times [2021-03-11 00:49:30,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:49:30,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2974624] [2021-03-11 00:49:30,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:49:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:49:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:49:31,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2974624] [2021-03-11 00:49:31,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:49:31,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:49:31,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160383416] [2021-03-11 00:49:31,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:49:31,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:49:31,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:49:31,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:49:31,034 INFO L87 Difference]: Start difference. First operand 4256 states and 14396 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:49:37,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:49:37,575 INFO L93 Difference]: Finished difference Result 4789 states and 16030 transitions. [2021-03-11 00:49:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 00:49:37,578 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:49:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:49:37,586 INFO L225 Difference]: With dead ends: 4789 [2021-03-11 00:49:37,586 INFO L226 Difference]: Without dead ends: 4722 [2021-03-11 00:49:37,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 3580.5ms TimeCoverageRelationStatistics Valid=263, Invalid=2493, Unknown=0, NotChecked=0, Total=2756 [2021-03-11 00:49:37,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2021-03-11 00:49:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 4264. [2021-03-11 00:49:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.3807178043631247) internal successors, (14412), 4263 states have internal predecessors, (14412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:49:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14412 transitions. [2021-03-11 00:49:37,638 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14412 transitions. Word has length 39 [2021-03-11 00:49:37,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:49:37,638 INFO L480 AbstractCegarLoop]: Abstraction has 4264 states and 14412 transitions. [2021-03-11 00:49:37,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:49:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14412 transitions. [2021-03-11 00:49:37,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:49:37,642 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:49:37,642 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:49:37,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-03-11 00:49:37,642 INFO L428 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:49:37,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:49:37,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1354896056, now seen corresponding path program 207 times [2021-03-11 00:49:37,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:49:37,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517356568] [2021-03-11 00:49:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:49:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:49:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:49:38,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517356568] [2021-03-11 00:49:38,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:49:38,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:49:38,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812774931] [2021-03-11 00:49:38,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:49:38,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:49:38,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:49:38,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:49:38,528 INFO L87 Difference]: Start difference. First operand 4264 states and 14412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:49:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:49:44,853 INFO L93 Difference]: Finished difference Result 4721 states and 15834 transitions. [2021-03-11 00:49:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 00:49:44,857 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:49:44,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:49:44,864 INFO L225 Difference]: With dead ends: 4721 [2021-03-11 00:49:44,864 INFO L226 Difference]: Without dead ends: 4658 [2021-03-11 00:49:44,864 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 3555.3ms TimeCoverageRelationStatistics Valid=264, Invalid=2388, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 00:49:44,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-03-11 00:49:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4256. [2021-03-11 00:49:44,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.3823736780258518) internal successors, (14392), 4255 states have internal predecessors, (14392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:49:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14392 transitions. [2021-03-11 00:49:44,913 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14392 transitions. Word has length 39 [2021-03-11 00:49:44,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:49:44,913 INFO L480 AbstractCegarLoop]: Abstraction has 4256 states and 14392 transitions. [2021-03-11 00:49:44,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:49:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14392 transitions. [2021-03-11 00:49:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:49:44,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:49:44,918 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:49:44,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-03-11 00:49:44,918 INFO L428 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:49:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:49:44,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1219217464, now seen corresponding path program 208 times [2021-03-11 00:49:44,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:49:44,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418835440] [2021-03-11 00:49:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:49:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:49:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:49:45,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418835440] [2021-03-11 00:49:45,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:49:45,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:49:45,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263709207] [2021-03-11 00:49:45,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:49:45,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:49:45,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:49:45,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:49:45,807 INFO L87 Difference]: Start difference. First operand 4256 states and 14392 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:49:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:49:54,673 INFO L93 Difference]: Finished difference Result 4967 states and 16467 transitions. [2021-03-11 00:49:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-03-11 00:49:54,677 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:49:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:49:54,685 INFO L225 Difference]: With dead ends: 4967 [2021-03-11 00:49:54,685 INFO L226 Difference]: Without dead ends: 4924 [2021-03-11 00:49:54,686 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 5165.2ms TimeCoverageRelationStatistics Valid=386, Invalid=4036, Unknown=0, NotChecked=0, Total=4422 [2021-03-11 00:49:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4924 states. [2021-03-11 00:49:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4924 to 4264. [2021-03-11 00:49:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.3807178043631247) internal successors, (14412), 4263 states have internal predecessors, (14412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:49:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14412 transitions. [2021-03-11 00:49:54,741 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14412 transitions. Word has length 39 [2021-03-11 00:49:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:49:54,741 INFO L480 AbstractCegarLoop]: Abstraction has 4264 states and 14412 transitions. [2021-03-11 00:49:54,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:49:54,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14412 transitions. [2021-03-11 00:49:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:49:54,745 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:49:54,745 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:49:54,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-03-11 00:49:54,745 INFO L428 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:49:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:49:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash -561380838, now seen corresponding path program 209 times [2021-03-11 00:49:54,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:49:54,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128801333] [2021-03-11 00:49:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:49:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:49:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:49:55,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128801333] [2021-03-11 00:49:55,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:49:55,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:49:55,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028321892] [2021-03-11 00:49:55,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:49:55,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:49:55,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:49:55,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:49:55,633 INFO L87 Difference]: Start difference. First operand 4264 states and 14412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:50:04,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:50:04,587 INFO L93 Difference]: Finished difference Result 4923 states and 16349 transitions. [2021-03-11 00:50:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-11 00:50:04,592 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:50:04,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:50:04,600 INFO L225 Difference]: With dead ends: 4923 [2021-03-11 00:50:04,600 INFO L226 Difference]: Without dead ends: 4871 [2021-03-11 00:50:04,601 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 5228.4ms TimeCoverageRelationStatistics Valid=376, Invalid=3914, Unknown=0, NotChecked=0, Total=4290 [2021-03-11 00:50:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-03-11 00:50:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4256. [2021-03-11 00:50:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.3823736780258518) internal successors, (14392), 4255 states have internal predecessors, (14392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:50:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14392 transitions. [2021-03-11 00:50:04,666 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14392 transitions. Word has length 39 [2021-03-11 00:50:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:50:04,666 INFO L480 AbstractCegarLoop]: Abstraction has 4256 states and 14392 transitions. [2021-03-11 00:50:04,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:50:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14392 transitions. [2021-03-11 00:50:04,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:50:04,672 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:50:04,672 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:50:04,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-03-11 00:50:04,672 INFO L428 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:50:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:50:04,672 INFO L82 PathProgramCache]: Analyzing trace with hash 2137701034, now seen corresponding path program 210 times [2021-03-11 00:50:04,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:50:04,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845332678] [2021-03-11 00:50:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:50:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:50:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:50:05,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845332678] [2021-03-11 00:50:05,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:50:05,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:50:05,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730977542] [2021-03-11 00:50:05,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:50:05,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:50:05,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:50:05,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:50:05,604 INFO L87 Difference]: Start difference. First operand 4256 states and 14392 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:50:12,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:50:12,604 INFO L93 Difference]: Finished difference Result 4849 states and 16108 transitions. [2021-03-11 00:50:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-11 00:50:12,608 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:50:12,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:50:12,615 INFO L225 Difference]: With dead ends: 4849 [2021-03-11 00:50:12,615 INFO L226 Difference]: Without dead ends: 4794 [2021-03-11 00:50:12,616 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4057.3ms TimeCoverageRelationStatistics Valid=298, Invalid=2672, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 00:50:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2021-03-11 00:50:12,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4258. [2021-03-11 00:50:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4258 states, 4257 states have (on average 3.38148931172187) internal successors, (14395), 4257 states have internal predecessors, (14395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:50:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4258 states to 4258 states and 14395 transitions. [2021-03-11 00:50:12,667 INFO L78 Accepts]: Start accepts. Automaton has 4258 states and 14395 transitions. Word has length 39 [2021-03-11 00:50:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:50:12,667 INFO L480 AbstractCegarLoop]: Abstraction has 4258 states and 14395 transitions. [2021-03-11 00:50:12,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:50:12,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4258 states and 14395 transitions. [2021-03-11 00:50:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:50:12,671 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:50:12,671 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:50:12,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-03-11 00:50:12,672 INFO L428 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:50:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:50:12,672 INFO L82 PathProgramCache]: Analyzing trace with hash -984614040, now seen corresponding path program 211 times [2021-03-11 00:50:12,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:50:12,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384991537] [2021-03-11 00:50:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:50:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:50:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:50:13,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384991537] [2021-03-11 00:50:13,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:50:13,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:50:13,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801497999] [2021-03-11 00:50:13,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:50:13,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:50:13,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:50:13,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:50:13,694 INFO L87 Difference]: Start difference. First operand 4258 states and 14395 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:50:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 00:50:20,458 INFO L93 Difference]: Finished difference Result 4784 states and 15956 transitions. [2021-03-11 00:50:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-11 00:50:20,463 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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 [2021-03-11 00:50:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 00:50:20,470 INFO L225 Difference]: With dead ends: 4784 [2021-03-11 00:50:20,470 INFO L226 Difference]: Without dead ends: 4738 [2021-03-11 00:50:20,471 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 3879.7ms TimeCoverageRelationStatistics Valid=269, Invalid=2383, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 00:50:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2021-03-11 00:50:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4262. [2021-03-11 00:50:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 4261 states have (on average 3.3801924430884767) internal successors, (14403), 4261 states have internal predecessors, (14403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 00:50:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 14403 transitions. [2021-03-11 00:50:20,528 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 14403 transitions. Word has length 39 [2021-03-11 00:50:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 00:50:20,528 INFO L480 AbstractCegarLoop]: Abstraction has 4262 states and 14403 transitions. [2021-03-11 00:50:20,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) [2021-03-11 00:50:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 14403 transitions. [2021-03-11 00:50:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-11 00:50:20,533 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 00:50:20,533 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 00:50:20,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-03-11 00:50:20,533 INFO L428 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 00:50:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 00:50:20,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1232080202, now seen corresponding path program 212 times [2021-03-11 00:50:20,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 00:50:20,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238752338] [2021-03-11 00:50:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 00:50:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 00:50:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 00:50:21,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238752338] [2021-03-11 00:50:21,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 00:50:21,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 00:50:21,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045917382] [2021-03-11 00:50:21,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 00:50:21,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 00:50:21,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 00:50:21,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 00:50:21,492 INFO L87 Difference]: Start difference. First operand 4262 states and 14403 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 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) Received shutdown request... [2021-03-11 00:50:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 00:50:26,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-03-11 00:50:26,609 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-11 00:50:26,612 WARN L224 ceAbstractionStarter]: Timeout [2021-03-11 00:50:26,612 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 12:50:26 BasicIcfg [2021-03-11 00:50:26,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 00:50:26,613 INFO L168 Benchmark]: Toolchain (without parser) took 821088.59 ms. Allocated memory was 255.9 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 236.4 MB in the beginning and 1.2 GB in the end (delta: -997.3 MB). Peak memory consumption was 89.7 MB. Max. memory is 16.0 GB. [2021-03-11 00:50:26,613 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 160.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 00:50:26,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.07 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 00:50:26,613 INFO L168 Benchmark]: Boogie Preprocessor took 22.01 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 00:50:26,613 INFO L168 Benchmark]: RCFGBuilder took 262.56 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 239.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-03-11 00:50:26,613 INFO L168 Benchmark]: TraceAbstraction took 820770.38 ms. Allocated memory was 255.9 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 238.4 MB in the beginning and 1.2 GB in the end (delta: -995.2 MB). Peak memory consumption was 90.3 MB. Max. memory is 16.0 GB. [2021-03-11 00:50:26,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 160.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.07 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.01 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 262.56 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 239.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 820770.38 ms. Allocated memory was 255.9 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 238.4 MB in the beginning and 1.2 GB in the end (delta: -995.2 MB). Peak memory consumption was 90.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 79). Cancelled while BasicCegarLoop was constructing difference of abstraction (4262states) and FLOYD_HOARE automaton (currently 32 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (3448 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 820667.9ms, OverallIterations: 212, TraceHistogramMax: 1, EmptinessCheckTime: 1142.1ms, AutomataDifference: 709968.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 471.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30744 SDtfs, 57463 SDslu, 286099 SDs, 0 SdLazy, 316237 SolverSat, 9415 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 130420.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10818 GetRequests, 352 SyntacticMatches, 437 SemanticMatches, 10029 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115046 ImplicationChecksByTransitivity, 401119.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5271occurred in iteration=0, InterpolantAutomatonStates: 8734, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13235.6ms AutomataMinimizationTime, 211 MinimizatonAttempts, 153674 StatesRemovedByMinimization, 209 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 108.9ms SsaConstructionTime, 419.6ms SatisfiabilityAnalysisTime, 94552.5ms InterpolantComputationTime, 8268 NumberOfCodeBlocks, 8268 NumberOfCodeBlocksAsserted, 212 NumberOfCheckSat, 8056 ConstructedInterpolants, 0 QuantifiedInterpolants, 106075 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 212 InterpolantComputations, 212 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown