/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 22:34:23,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 22:34:23,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 22:34:23,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 22:34:23,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 22:34:23,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 22:34:23,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 22:34:23,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 22:34:23,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 22:34:23,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 22:34:23,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 22:34:23,950 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 22:34:23,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 22:34:23,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 22:34:23,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 22:34:23,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 22:34:23,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 22:34:23,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 22:34:23,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 22:34:23,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 22:34:23,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 22:34:23,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 22:34:23,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 22:34:23,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 22:34:23,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 22:34:23,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 22:34:23,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 22:34:23,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 22:34:23,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 22:34:23,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 22:34:23,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 22:34:23,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 22:34:23,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 22:34:23,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 22:34:23,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 22:34:23,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 22:34:23,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 22:34:24,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 22:34:24,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 22:34:24,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 22:34:24,351 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-10 22:34:24,352 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-10 22:34:24,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2021-03-10 22:34:24,353 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-03-10 22:34:24,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 22:34:24,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-10 22:34:24,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 22:34:24,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 22:34:24,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 22:34:24,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/1) ... [2021-03-10 22:34:24,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/1) ... [2021-03-10 22:34:24,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 22:34:24,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 22:34:24,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 22:34:24,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 22:34:24,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/1) ... [2021-03-10 22:34:24,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/1) ... [2021-03-10 22:34:24,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/1) ... [2021-03-10 22:34:24,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/1) ... [2021-03-10 22:34:24,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/1) ... [2021-03-10 22:34:24,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/1) ... [2021-03-10 22:34:24,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/1) ... [2021-03-10 22:34:24,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 22:34:24,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 22:34:24,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 22:34:24,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 22:34:24,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 22:34:24,554 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-10 22:34:24,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-10 22:34:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-10 22:34:24,555 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-10 22:34:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-10 22:34:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-10 22:34:24,555 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-10 22:34:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 22:34:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 22:34:24,555 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-10 22:34:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-10 22:34:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-10 22:34:24,557 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-10 22:34:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-10 22:34:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-10 22:34:24,559 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-10 22:34:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-10 22:34:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-10 22:34:24,560 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-10 22:34:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-10 22:34:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-10 22:34:24,561 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 22:34:24,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 22:34:24,936 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-10 22:34:24,938 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:34:24 BoogieIcfgContainer [2021-03-10 22:34:24,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 22:34:24,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 22:34:24,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 22:34:24,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 22:34:24,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:34:24" (1/2) ... [2021-03-10 22:34:24,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6663b5 and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 10:34:24, skipping insertion in model container [2021-03-10 22:34:24,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:34:24" (2/2) ... [2021-03-10 22:34:24,946 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-03-10 22:34:24,968 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 22:34:24,968 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 22:34:24,973 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 22:34:24,973 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 22:34:25,108 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-03-10 22:34:25,127 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-10 22:34:25,163 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 22:34:25,163 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 22:34:25,163 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 22:34:25,163 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 22:34:25,164 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 22:34:25,164 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 22:34:25,164 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 22:34:25,164 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 22:34:25,181 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 54 transitions, 156 flow [2021-03-10 22:34:48,789 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:34:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:34:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:34:49,963 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:34:49,965 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:34:49,965 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:34:49,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:34:49,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1505096666, now seen corresponding path program 1 times [2021-03-10 22:34:49,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:34:49,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010000455] [2021-03-10 22:34:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:34:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:34:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:34:50,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010000455] [2021-03-10 22:34:50,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:34:50,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:34:50,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349784940] [2021-03-10 22:34:50,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 22:34:50,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:34:50,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 22:34:50,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-10 22:34:50,382 INFO L87 Difference]: Start difference. First operand has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 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 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:34:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:34:53,045 INFO L93 Difference]: Finished difference Result 201088 states and 980337 transitions. [2021-03-10 22:34:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:34:53,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:34:53,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:34:54,656 INFO L225 Difference]: With dead ends: 201088 [2021-03-10 22:34:54,657 INFO L226 Difference]: Without dead ends: 201088 [2021-03-10 22:34:54,658 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:34:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201088 states. [2021-03-10 22:35:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201088 to 100373. [2021-03-10 22:35:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100373 states, 100372 states have (on average 4.930000398517515) internal successors, (494834), 100372 states have internal predecessors, (494834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100373 states to 100373 states and 494834 transitions. [2021-03-10 22:35:03,025 INFO L78 Accepts]: Start accepts. Automaton has 100373 states and 494834 transitions. Word has length 46 [2021-03-10 22:35:03,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:35:03,027 INFO L480 AbstractCegarLoop]: Abstraction has 100373 states and 494834 transitions. [2021-03-10 22:35:03,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand 100373 states and 494834 transitions. [2021-03-10 22:35:03,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:35:03,529 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:35:03,529 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:35:03,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 22:35:03,530 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:35:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:35:03,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2046490878, now seen corresponding path program 2 times [2021-03-10 22:35:03,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:35:03,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903641311] [2021-03-10 22:35:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:35:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:35:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:35:03,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903641311] [2021-03-10 22:35:03,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:35:03,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:35:03,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738818073] [2021-03-10 22:35:03,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:35:03,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:35:03,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:35:03,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:35:03,645 INFO L87 Difference]: Start difference. First operand 100373 states and 494834 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:06,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:35:06,771 INFO L93 Difference]: Finished difference Result 237543 states and 1143295 transitions. [2021-03-10 22:35:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:35:06,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:35:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:35:08,389 INFO L225 Difference]: With dead ends: 237543 [2021-03-10 22:35:08,389 INFO L226 Difference]: Without dead ends: 237543 [2021-03-10 22:35:08,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:35:10,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237543 states. [2021-03-10 22:35:15,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237543 to 124242. [2021-03-10 22:35:15,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124242 states, 124241 states have (on average 4.865503336257757) internal successors, (604495), 124241 states have internal predecessors, (604495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124242 states to 124242 states and 604495 transitions. [2021-03-10 22:35:16,872 INFO L78 Accepts]: Start accepts. Automaton has 124242 states and 604495 transitions. Word has length 46 [2021-03-10 22:35:16,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:35:16,874 INFO L480 AbstractCegarLoop]: Abstraction has 124242 states and 604495 transitions. [2021-03-10 22:35:16,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:16,879 INFO L276 IsEmpty]: Start isEmpty. Operand 124242 states and 604495 transitions. [2021-03-10 22:35:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:35:17,303 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:35:17,304 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:35:17,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 22:35:17,304 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:35:17,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:35:17,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1539776996, now seen corresponding path program 3 times [2021-03-10 22:35:17,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:35:17,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758837849] [2021-03-10 22:35:17,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:35:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:35:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:35:17,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758837849] [2021-03-10 22:35:17,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:35:17,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:35:17,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543799829] [2021-03-10 22:35:17,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:35:17,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:35:17,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:35:17,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:35:17,394 INFO L87 Difference]: Start difference. First operand 124242 states and 604495 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:35:20,451 INFO L93 Difference]: Finished difference Result 232977 states and 1116666 transitions. [2021-03-10 22:35:20,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:35:20,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:35:20,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:35:22,343 INFO L225 Difference]: With dead ends: 232977 [2021-03-10 22:35:22,343 INFO L226 Difference]: Without dead ends: 232977 [2021-03-10 22:35:22,344 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:35:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232977 states. [2021-03-10 22:35:28,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232977 to 140760. [2021-03-10 22:35:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140760 states, 140759 states have (on average 4.84867752683665) internal successors, (682495), 140759 states have internal predecessors, (682495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140760 states to 140760 states and 682495 transitions. [2021-03-10 22:35:30,608 INFO L78 Accepts]: Start accepts. Automaton has 140760 states and 682495 transitions. Word has length 46 [2021-03-10 22:35:30,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:35:30,609 INFO L480 AbstractCegarLoop]: Abstraction has 140760 states and 682495 transitions. [2021-03-10 22:35:30,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:30,610 INFO L276 IsEmpty]: Start isEmpty. Operand 140760 states and 682495 transitions. [2021-03-10 22:35:31,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:35:31,079 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:35:31,079 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:35:31,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 22:35:31,079 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:35:31,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:35:31,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1869124714, now seen corresponding path program 4 times [2021-03-10 22:35:31,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:35:31,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180823322] [2021-03-10 22:35:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:35:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:35:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:35:31,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180823322] [2021-03-10 22:35:31,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:35:31,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:35:31,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315386514] [2021-03-10 22:35:31,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:35:31,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:35:31,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:35:31,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:35:31,182 INFO L87 Difference]: Start difference. First operand 140760 states and 682495 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:35:34,397 INFO L93 Difference]: Finished difference Result 207060 states and 995129 transitions. [2021-03-10 22:35:34,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:35:34,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:35:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:35:35,420 INFO L225 Difference]: With dead ends: 207060 [2021-03-10 22:35:35,420 INFO L226 Difference]: Without dead ends: 207060 [2021-03-10 22:35:35,421 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:35:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207060 states. [2021-03-10 22:35:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207060 to 146091. [2021-03-10 22:35:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146091 states, 146090 states have (on average 4.832856458347594) internal successors, (706032), 146090 states have internal predecessors, (706032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146091 states to 146091 states and 706032 transitions. [2021-03-10 22:35:43,326 INFO L78 Accepts]: Start accepts. Automaton has 146091 states and 706032 transitions. Word has length 46 [2021-03-10 22:35:43,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:35:43,327 INFO L480 AbstractCegarLoop]: Abstraction has 146091 states and 706032 transitions. [2021-03-10 22:35:43,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 146091 states and 706032 transitions. [2021-03-10 22:35:43,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:35:43,795 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:35:43,795 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:35:43,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 22:35:43,795 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:35:43,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:35:43,796 INFO L82 PathProgramCache]: Analyzing trace with hash -813595456, now seen corresponding path program 5 times [2021-03-10 22:35:43,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:35:43,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91749463] [2021-03-10 22:35:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:35:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:35:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:35:43,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91749463] [2021-03-10 22:35:43,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:35:43,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:35:43,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715772817] [2021-03-10 22:35:43,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:35:43,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:35:43,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:35:43,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:35:43,873 INFO L87 Difference]: Start difference. First operand 146091 states and 706032 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:35:47,283 INFO L93 Difference]: Finished difference Result 271147 states and 1272171 transitions. [2021-03-10 22:35:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:35:47,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:35:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:35:49,406 INFO L225 Difference]: With dead ends: 271147 [2021-03-10 22:35:49,406 INFO L226 Difference]: Without dead ends: 271147 [2021-03-10 22:35:49,407 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:35:50,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271147 states. [2021-03-10 22:35:57,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271147 to 164447. [2021-03-10 22:35:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164447 states, 164446 states have (on average 4.712294613429332) internal successors, (774918), 164446 states have internal predecessors, (774918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164447 states to 164447 states and 774918 transitions. [2021-03-10 22:35:59,541 INFO L78 Accepts]: Start accepts. Automaton has 164447 states and 774918 transitions. Word has length 46 [2021-03-10 22:35:59,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:35:59,542 INFO L480 AbstractCegarLoop]: Abstraction has 164447 states and 774918 transitions. [2021-03-10 22:35:59,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:35:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 164447 states and 774918 transitions. [2021-03-10 22:36:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:36:00,450 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:36:00,451 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:36:00,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 22:36:00,451 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:36:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:36:00,451 INFO L82 PathProgramCache]: Analyzing trace with hash 39659516, now seen corresponding path program 6 times [2021-03-10 22:36:00,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:36:00,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768837193] [2021-03-10 22:36:00,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:36:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:36:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:36:00,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768837193] [2021-03-10 22:36:00,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:36:00,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:36:00,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295078885] [2021-03-10 22:36:00,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:36:00,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:36:00,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:36:00,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:36:00,680 INFO L87 Difference]: Start difference. First operand 164447 states and 774918 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:36:05,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:36:05,204 INFO L93 Difference]: Finished difference Result 281393 states and 1303094 transitions. [2021-03-10 22:36:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:36:05,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:36:05,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:36:07,631 INFO L225 Difference]: With dead ends: 281393 [2021-03-10 22:36:07,631 INFO L226 Difference]: Without dead ends: 281393 [2021-03-10 22:36:07,631 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:36:10,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281393 states. [2021-03-10 22:36:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281393 to 185569. [2021-03-10 22:36:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185569 states, 185568 states have (on average 4.64495494912916) internal successors, (861955), 185568 states have internal predecessors, (861955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:36:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185569 states to 185569 states and 861955 transitions. [2021-03-10 22:36:19,003 INFO L78 Accepts]: Start accepts. Automaton has 185569 states and 861955 transitions. Word has length 46 [2021-03-10 22:36:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:36:19,003 INFO L480 AbstractCegarLoop]: Abstraction has 185569 states and 861955 transitions. [2021-03-10 22:36:19,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:36:19,004 INFO L276 IsEmpty]: Start isEmpty. Operand 185569 states and 861955 transitions. [2021-03-10 22:36:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:36:19,703 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:36:19,703 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:36:19,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 22:36:19,703 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:36:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:36:19,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1449595654, now seen corresponding path program 7 times [2021-03-10 22:36:19,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:36:19,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922421566] [2021-03-10 22:36:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:36:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:36:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:36:19,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922421566] [2021-03-10 22:36:19,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:36:19,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:36:19,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634238003] [2021-03-10 22:36:19,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 22:36:19,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:36:19,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 22:36:19,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-10 22:36:19,795 INFO L87 Difference]: Start difference. First operand 185569 states and 861955 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:36:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:36:23,029 INFO L93 Difference]: Finished difference Result 292927 states and 1358658 transitions. [2021-03-10 22:36:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-10 22:36:23,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:36:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:36:24,149 INFO L225 Difference]: With dead ends: 292927 [2021-03-10 22:36:24,150 INFO L226 Difference]: Without dead ends: 196405 [2021-03-10 22:36:24,150 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-10 22:36:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196405 states. [2021-03-10 22:36:30,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196405 to 196405. [2021-03-10 22:36:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196405 states, 196404 states have (on average 4.545100914441661) internal successors, (892676), 196404 states have internal predecessors, (892676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:36:33,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196405 states to 196405 states and 892676 transitions. [2021-03-10 22:36:33,147 INFO L78 Accepts]: Start accepts. Automaton has 196405 states and 892676 transitions. Word has length 46 [2021-03-10 22:36:33,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:36:33,147 INFO L480 AbstractCegarLoop]: Abstraction has 196405 states and 892676 transitions. [2021-03-10 22:36:33,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:36:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 196405 states and 892676 transitions. [2021-03-10 22:36:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:36:33,822 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:36:33,823 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:36:33,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 22:36:33,823 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:36:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:36:33,823 INFO L82 PathProgramCache]: Analyzing trace with hash 272315946, now seen corresponding path program 8 times [2021-03-10 22:36:33,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:36:33,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465190583] [2021-03-10 22:36:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:36:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:36:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:36:33,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465190583] [2021-03-10 22:36:33,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:36:33,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:36:33,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868552346] [2021-03-10 22:36:33,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:36:33,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:36:33,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:36:33,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:36:33,881 INFO L87 Difference]: Start difference. First operand 196405 states and 892676 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:36:37,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:36:37,509 INFO L93 Difference]: Finished difference Result 311447 states and 1399231 transitions. [2021-03-10 22:36:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 22:36:37,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:36:37,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:36:40,716 INFO L225 Difference]: With dead ends: 311447 [2021-03-10 22:36:40,717 INFO L226 Difference]: Without dead ends: 311255 [2021-03-10 22:36:40,718 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:36:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311255 states. [2021-03-10 22:36:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311255 to 207417. [2021-03-10 22:36:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207417 states, 207416 states have (on average 4.523006903999692) internal successors, (938144), 207416 states have internal predecessors, (938144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:36:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207417 states to 207417 states and 938144 transitions. [2021-03-10 22:36:53,972 INFO L78 Accepts]: Start accepts. Automaton has 207417 states and 938144 transitions. Word has length 46 [2021-03-10 22:36:53,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:36:53,972 INFO L480 AbstractCegarLoop]: Abstraction has 207417 states and 938144 transitions. [2021-03-10 22:36:53,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:36:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 207417 states and 938144 transitions. [2021-03-10 22:36:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:36:54,680 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:36:54,680 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:36:54,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 22:36:54,680 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:36:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:36:54,681 INFO L82 PathProgramCache]: Analyzing trace with hash 862533974, now seen corresponding path program 9 times [2021-03-10 22:36:54,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:36:54,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610788972] [2021-03-10 22:36:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:36:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:36:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:36:54,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610788972] [2021-03-10 22:36:54,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:36:54,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:36:54,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749579447] [2021-03-10 22:36:54,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:36:54,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:36:54,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:36:54,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:36:54,752 INFO L87 Difference]: Start difference. First operand 207417 states and 938144 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:36:58,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:36:58,291 INFO L93 Difference]: Finished difference Result 334168 states and 1492333 transitions. [2021-03-10 22:36:58,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:36:58,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:36:58,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:37:00,754 INFO L225 Difference]: With dead ends: 334168 [2021-03-10 22:37:00,754 INFO L226 Difference]: Without dead ends: 333766 [2021-03-10 22:37:00,754 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:37:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333766 states. [2021-03-10 22:37:09,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333766 to 214179. [2021-03-10 22:37:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214179 states, 214178 states have (on average 4.497025838321396) internal successors, (963164), 214178 states have internal predecessors, (963164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:37:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214179 states to 214179 states and 963164 transitions. [2021-03-10 22:37:12,204 INFO L78 Accepts]: Start accepts. Automaton has 214179 states and 963164 transitions. Word has length 46 [2021-03-10 22:37:12,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:37:12,204 INFO L480 AbstractCegarLoop]: Abstraction has 214179 states and 963164 transitions. [2021-03-10 22:37:12,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:37:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 214179 states and 963164 transitions. [2021-03-10 22:37:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:37:13,894 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:37:13,894 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:37:13,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 22:37:13,894 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:37:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:37:13,895 INFO L82 PathProgramCache]: Analyzing trace with hash -939509874, now seen corresponding path program 10 times [2021-03-10 22:37:13,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:37:13,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379944749] [2021-03-10 22:37:13,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:37:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:37:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:37:13,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379944749] [2021-03-10 22:37:13,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:37:13,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:37:13,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327685540] [2021-03-10 22:37:13,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:37:13,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:37:13,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:37:13,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:37:13,959 INFO L87 Difference]: Start difference. First operand 214179 states and 963164 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:37:17,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:37:17,835 INFO L93 Difference]: Finished difference Result 354188 states and 1551857 transitions. [2021-03-10 22:37:17,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:37:17,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:37:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:37:19,430 INFO L225 Difference]: With dead ends: 354188 [2021-03-10 22:37:19,430 INFO L226 Difference]: Without dead ends: 353624 [2021-03-10 22:37:19,431 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:37:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353624 states. [2021-03-10 22:37:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353624 to 224674. [2021-03-10 22:37:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224674 states, 224673 states have (on average 4.434026340503754) internal successors, (996206), 224673 states have internal predecessors, (996206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:37:31,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224674 states to 224674 states and 996206 transitions. [2021-03-10 22:37:31,970 INFO L78 Accepts]: Start accepts. Automaton has 224674 states and 996206 transitions. Word has length 46 [2021-03-10 22:37:31,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:37:31,970 INFO L480 AbstractCegarLoop]: Abstraction has 224674 states and 996206 transitions. [2021-03-10 22:37:31,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:37:31,971 INFO L276 IsEmpty]: Start isEmpty. Operand 224674 states and 996206 transitions. [2021-03-10 22:37:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:37:32,777 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:37:32,777 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:37:32,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 22:37:32,777 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:37:32,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:37:32,778 INFO L82 PathProgramCache]: Analyzing trace with hash 642236716, now seen corresponding path program 11 times [2021-03-10 22:37:32,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:37:32,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479888729] [2021-03-10 22:37:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:37:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:37:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:37:32,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479888729] [2021-03-10 22:37:32,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:37:32,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:37:32,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89637650] [2021-03-10 22:37:32,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:37:32,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:37:32,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:37:32,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:37:32,884 INFO L87 Difference]: Start difference. First operand 224674 states and 996206 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:37:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:37:37,329 INFO L93 Difference]: Finished difference Result 313135 states and 1375062 transitions. [2021-03-10 22:37:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:37:37,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:37:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:37:39,741 INFO L225 Difference]: With dead ends: 313135 [2021-03-10 22:37:39,741 INFO L226 Difference]: Without dead ends: 313027 [2021-03-10 22:37:39,742 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:37:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313027 states. [2021-03-10 22:37:49,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313027 to 222693. [2021-03-10 22:37:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222693 states, 222692 states have (on average 4.4333384225746775) internal successors, (987269), 222692 states have internal predecessors, (987269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:37:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222693 states to 222693 states and 987269 transitions. [2021-03-10 22:37:51,786 INFO L78 Accepts]: Start accepts. Automaton has 222693 states and 987269 transitions. Word has length 46 [2021-03-10 22:37:51,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:37:51,787 INFO L480 AbstractCegarLoop]: Abstraction has 222693 states and 987269 transitions. [2021-03-10 22:37:51,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:37:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 222693 states and 987269 transitions. [2021-03-10 22:37:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:37:52,634 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:37:52,634 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:37:52,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-10 22:37:52,634 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:37:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:37:52,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1853602572, now seen corresponding path program 12 times [2021-03-10 22:37:52,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:37:52,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729265517] [2021-03-10 22:37:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:37:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:37:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:37:52,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729265517] [2021-03-10 22:37:52,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:37:52,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:37:52,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213993164] [2021-03-10 22:37:52,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 22:37:52,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:37:52,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 22:37:52,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-10 22:37:52,678 INFO L87 Difference]: Start difference. First operand 222693 states and 987269 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:37:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:37:56,437 INFO L93 Difference]: Finished difference Result 393699 states and 1713546 transitions. [2021-03-10 22:37:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:37:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:37:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:37:59,079 INFO L225 Difference]: With dead ends: 393699 [2021-03-10 22:37:59,079 INFO L226 Difference]: Without dead ends: 393021 [2021-03-10 22:37:59,079 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:38:01,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393021 states. [2021-03-10 22:38:08,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393021 to 222310. [2021-03-10 22:38:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222310 states, 222309 states have (on average 4.428525160924659) internal successors, (984501), 222309 states have internal predecessors, (984501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:38:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222310 states to 222310 states and 984501 transitions. [2021-03-10 22:38:10,931 INFO L78 Accepts]: Start accepts. Automaton has 222310 states and 984501 transitions. Word has length 46 [2021-03-10 22:38:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:38:10,931 INFO L480 AbstractCegarLoop]: Abstraction has 222310 states and 984501 transitions. [2021-03-10 22:38:10,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:38:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 222310 states and 984501 transitions. [2021-03-10 22:38:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:38:12,653 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:38:12,653 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:38:12,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-10 22:38:12,653 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:38:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:38:12,654 INFO L82 PathProgramCache]: Analyzing trace with hash 48602460, now seen corresponding path program 13 times [2021-03-10 22:38:12,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:38:12,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397547213] [2021-03-10 22:38:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:38:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:38:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:38:12,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397547213] [2021-03-10 22:38:12,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:38:12,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:38:12,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101731920] [2021-03-10 22:38:12,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 22:38:12,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:38:12,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 22:38:12,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-10 22:38:12,714 INFO L87 Difference]: Start difference. First operand 222310 states and 984501 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:38:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:38:16,365 INFO L93 Difference]: Finished difference Result 389126 states and 1691004 transitions. [2021-03-10 22:38:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:38:16,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:38:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:38:18,953 INFO L225 Difference]: With dead ends: 389126 [2021-03-10 22:38:18,953 INFO L226 Difference]: Without dead ends: 388292 [2021-03-10 22:38:18,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:38:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388292 states. [2021-03-10 22:38:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388292 to 218179. [2021-03-10 22:38:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218179 states, 218178 states have (on average 4.420143185839086) internal successors, (964378), 218178 states have internal predecessors, (964378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:38:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218179 states to 218179 states and 964378 transitions. [2021-03-10 22:38:30,996 INFO L78 Accepts]: Start accepts. Automaton has 218179 states and 964378 transitions. Word has length 46 [2021-03-10 22:38:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:38:30,996 INFO L480 AbstractCegarLoop]: Abstraction has 218179 states and 964378 transitions. [2021-03-10 22:38:30,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:38:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 218179 states and 964378 transitions. [2021-03-10 22:38:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:38:32,413 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:38:32,413 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:38:32,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-10 22:38:32,413 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:38:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:38:32,416 INFO L82 PathProgramCache]: Analyzing trace with hash 136450120, now seen corresponding path program 14 times [2021-03-10 22:38:32,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:38:32,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048053814] [2021-03-10 22:38:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:38:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:38:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:38:32,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048053814] [2021-03-10 22:38:32,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:38:32,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-10 22:38:32,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365090633] [2021-03-10 22:38:32,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 22:38:32,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:38:32,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 22:38:32,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-10 22:38:32,550 INFO L87 Difference]: Start difference. First operand 218179 states and 964378 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:38:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:38:36,602 INFO L93 Difference]: Finished difference Result 346552 states and 1495008 transitions. [2021-03-10 22:38:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 22:38:36,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:38:36,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:38:39,315 INFO L225 Difference]: With dead ends: 346552 [2021-03-10 22:38:39,315 INFO L226 Difference]: Without dead ends: 345856 [2021-03-10 22:38:39,317 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:38:41,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345856 states. [2021-03-10 22:38:49,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345856 to 215344. [2021-03-10 22:38:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215344 states, 215343 states have (on average 4.33035204301974) internal successors, (932511), 215343 states have internal predecessors, (932511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:38:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215344 states to 215344 states and 932511 transitions. [2021-03-10 22:38:52,586 INFO L78 Accepts]: Start accepts. Automaton has 215344 states and 932511 transitions. Word has length 46 [2021-03-10 22:38:52,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:38:52,587 INFO L480 AbstractCegarLoop]: Abstraction has 215344 states and 932511 transitions. [2021-03-10 22:38:52,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:38:52,587 INFO L276 IsEmpty]: Start isEmpty. Operand 215344 states and 932511 transitions. [2021-03-10 22:38:53,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:38:53,394 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:38:53,394 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:38:53,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-10 22:38:53,394 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:38:53,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:38:53,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1139991830, now seen corresponding path program 15 times [2021-03-10 22:38:53,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:38:53,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340751598] [2021-03-10 22:38:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:38:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:38:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:38:53,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340751598] [2021-03-10 22:38:53,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:38:53,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:38:53,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277660334] [2021-03-10 22:38:53,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:38:53,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:38:53,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:38:53,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:38:53,443 INFO L87 Difference]: Start difference. First operand 215344 states and 932511 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:38:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:38:56,674 INFO L93 Difference]: Finished difference Result 325590 states and 1394296 transitions. [2021-03-10 22:38:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:38:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:38:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:38:58,156 INFO L225 Difference]: With dead ends: 325590 [2021-03-10 22:38:58,157 INFO L226 Difference]: Without dead ends: 324958 [2021-03-10 22:38:58,157 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 24.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:39:00,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324958 states. [2021-03-10 22:39:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324958 to 210014. [2021-03-10 22:39:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210014 states, 210013 states have (on average 4.320808711841648) internal successors, (907426), 210013 states have internal predecessors, (907426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210014 states to 210014 states and 907426 transitions. [2021-03-10 22:39:07,664 INFO L78 Accepts]: Start accepts. Automaton has 210014 states and 907426 transitions. Word has length 46 [2021-03-10 22:39:07,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:39:07,665 INFO L480 AbstractCegarLoop]: Abstraction has 210014 states and 907426 transitions. [2021-03-10 22:39:07,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 210014 states and 907426 transitions. [2021-03-10 22:39:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:39:09,239 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:39:09,239 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:39:09,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-10 22:39:09,239 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:39:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:39:09,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1171918840, now seen corresponding path program 16 times [2021-03-10 22:39:09,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:39:09,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965803348] [2021-03-10 22:39:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:39:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:39:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:39:09,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965803348] [2021-03-10 22:39:09,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:39:09,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:39:09,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107912232] [2021-03-10 22:39:09,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:39:09,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:39:09,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:39:09,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:39:09,382 INFO L87 Difference]: Start difference. First operand 210014 states and 907426 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:39:12,471 INFO L93 Difference]: Finished difference Result 316757 states and 1325452 transitions. [2021-03-10 22:39:12,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:39:12,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:39:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:39:15,246 INFO L225 Difference]: With dead ends: 316757 [2021-03-10 22:39:15,246 INFO L226 Difference]: Without dead ends: 314453 [2021-03-10 22:39:15,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:39:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314453 states. [2021-03-10 22:39:23,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314453 to 209291. [2021-03-10 22:39:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209291 states, 209290 states have (on average 4.209207319986621) internal successors, (880945), 209290 states have internal predecessors, (880945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209291 states to 209291 states and 880945 transitions. [2021-03-10 22:39:25,085 INFO L78 Accepts]: Start accepts. Automaton has 209291 states and 880945 transitions. Word has length 46 [2021-03-10 22:39:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:39:25,085 INFO L480 AbstractCegarLoop]: Abstraction has 209291 states and 880945 transitions. [2021-03-10 22:39:25,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 209291 states and 880945 transitions. [2021-03-10 22:39:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:39:25,690 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:39:25,690 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:39:25,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-10 22:39:25,690 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:39:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:39:25,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1000072394, now seen corresponding path program 17 times [2021-03-10 22:39:25,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:39:25,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018719972] [2021-03-10 22:39:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:39:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:39:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:39:25,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018719972] [2021-03-10 22:39:25,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:39:25,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:39:25,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472548834] [2021-03-10 22:39:25,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:39:25,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:39:25,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:39:25,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:39:25,735 INFO L87 Difference]: Start difference. First operand 209291 states and 880945 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:27,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:39:27,776 INFO L93 Difference]: Finished difference Result 301671 states and 1254865 transitions. [2021-03-10 22:39:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:39:27,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:39:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:39:29,389 INFO L225 Difference]: With dead ends: 301671 [2021-03-10 22:39:29,389 INFO L226 Difference]: Without dead ends: 300815 [2021-03-10 22:39:29,389 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:39:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300815 states. [2021-03-10 22:39:36,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300815 to 205867. [2021-03-10 22:39:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205867 states, 205866 states have (on average 4.184071191940388) internal successors, (861358), 205866 states have internal predecessors, (861358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:38,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205867 states to 205867 states and 861358 transitions. [2021-03-10 22:39:38,120 INFO L78 Accepts]: Start accepts. Automaton has 205867 states and 861358 transitions. Word has length 46 [2021-03-10 22:39:38,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:39:38,122 INFO L480 AbstractCegarLoop]: Abstraction has 205867 states and 861358 transitions. [2021-03-10 22:39:38,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:38,122 INFO L276 IsEmpty]: Start isEmpty. Operand 205867 states and 861358 transitions. [2021-03-10 22:39:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:39:38,670 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:39:38,670 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:39:38,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-10 22:39:38,670 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:39:38,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:39:38,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1790180840, now seen corresponding path program 18 times [2021-03-10 22:39:38,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:39:38,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829477767] [2021-03-10 22:39:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:39:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:39:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:39:38,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829477767] [2021-03-10 22:39:38,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:39:38,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:39:38,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172211657] [2021-03-10 22:39:38,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:39:38,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:39:38,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:39:38,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:39:38,716 INFO L87 Difference]: Start difference. First operand 205867 states and 861358 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:39:41,013 INFO L93 Difference]: Finished difference Result 301500 states and 1218655 transitions. [2021-03-10 22:39:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:39:41,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:39:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:39:42,641 INFO L225 Difference]: With dead ends: 301500 [2021-03-10 22:39:42,641 INFO L226 Difference]: Without dead ends: 298930 [2021-03-10 22:39:42,641 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:39:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298930 states. [2021-03-10 22:39:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298930 to 203045. [2021-03-10 22:39:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203045 states, 203044 states have (on average 4.065946297354268) internal successors, (825566), 203044 states have internal predecessors, (825566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203045 states to 203045 states and 825566 transitions. [2021-03-10 22:39:51,446 INFO L78 Accepts]: Start accepts. Automaton has 203045 states and 825566 transitions. Word has length 46 [2021-03-10 22:39:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:39:51,446 INFO L480 AbstractCegarLoop]: Abstraction has 203045 states and 825566 transitions. [2021-03-10 22:39:51,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 203045 states and 825566 transitions. [2021-03-10 22:39:52,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:39:52,855 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:39:52,855 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:39:52,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-10 22:39:52,856 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:39:52,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:39:52,856 INFO L82 PathProgramCache]: Analyzing trace with hash 709518024, now seen corresponding path program 19 times [2021-03-10 22:39:52,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:39:52,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886159818] [2021-03-10 22:39:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:39:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:39:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:39:52,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886159818] [2021-03-10 22:39:52,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:39:52,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:39:52,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204022456] [2021-03-10 22:39:52,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:39:52,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:39:52,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:39:52,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:39:52,946 INFO L87 Difference]: Start difference. First operand 203045 states and 825566 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:39:55,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:39:55,638 INFO L93 Difference]: Finished difference Result 288060 states and 1146724 transitions. [2021-03-10 22:39:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:39:55,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:39:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:39:56,969 INFO L225 Difference]: With dead ends: 288060 [2021-03-10 22:39:56,970 INFO L226 Difference]: Without dead ends: 284768 [2021-03-10 22:39:56,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:39:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284768 states. [2021-03-10 22:40:03,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284768 to 191781. [2021-03-10 22:40:03,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191781 states, 191780 states have (on average 4.031426634685578) internal successors, (773147), 191780 states have internal predecessors, (773147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191781 states to 191781 states and 773147 transitions. [2021-03-10 22:40:05,409 INFO L78 Accepts]: Start accepts. Automaton has 191781 states and 773147 transitions. Word has length 46 [2021-03-10 22:40:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:40:05,409 INFO L480 AbstractCegarLoop]: Abstraction has 191781 states and 773147 transitions. [2021-03-10 22:40:05,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:05,409 INFO L276 IsEmpty]: Start isEmpty. Operand 191781 states and 773147 transitions. [2021-03-10 22:40:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:40:05,901 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:40:05,902 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:40:05,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-10 22:40:05,902 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:40:05,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:40:05,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1639152820, now seen corresponding path program 20 times [2021-03-10 22:40:05,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:40:05,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736720738] [2021-03-10 22:40:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:40:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:40:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:40:05,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736720738] [2021-03-10 22:40:05,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:40:05,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:40:05,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73198573] [2021-03-10 22:40:05,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:40:05,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:40:05,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:40:05,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:40:05,952 INFO L87 Difference]: Start difference. First operand 191781 states and 773147 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:40:08,763 INFO L93 Difference]: Finished difference Result 289421 states and 1160347 transitions. [2021-03-10 22:40:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:40:08,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:40:08,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:40:09,836 INFO L225 Difference]: With dead ends: 289421 [2021-03-10 22:40:09,836 INFO L226 Difference]: Without dead ends: 289101 [2021-03-10 22:40:09,837 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:40:11,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289101 states. [2021-03-10 22:40:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289101 to 192581. [2021-03-10 22:40:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192581 states, 192580 states have (on average 4.028969778793229) internal successors, (775899), 192580 states have internal predecessors, (775899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192581 states to 192581 states and 775899 transitions. [2021-03-10 22:40:17,312 INFO L78 Accepts]: Start accepts. Automaton has 192581 states and 775899 transitions. Word has length 46 [2021-03-10 22:40:17,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:40:17,313 INFO L480 AbstractCegarLoop]: Abstraction has 192581 states and 775899 transitions. [2021-03-10 22:40:17,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 192581 states and 775899 transitions. [2021-03-10 22:40:18,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:40:18,687 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:40:18,687 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:40:18,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-10 22:40:18,687 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:40:18,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:40:18,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1671079830, now seen corresponding path program 21 times [2021-03-10 22:40:18,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:40:18,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516794270] [2021-03-10 22:40:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:40:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:40:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:40:18,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516794270] [2021-03-10 22:40:18,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:40:18,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:40:18,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128876300] [2021-03-10 22:40:18,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:40:18,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:40:18,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:40:18,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:40:18,736 INFO L87 Difference]: Start difference. First operand 192581 states and 775899 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:40:20,911 INFO L93 Difference]: Finished difference Result 289605 states and 1158403 transitions. [2021-03-10 22:40:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:40:20,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:40:20,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:40:22,548 INFO L225 Difference]: With dead ends: 289605 [2021-03-10 22:40:22,548 INFO L226 Difference]: Without dead ends: 287589 [2021-03-10 22:40:22,549 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:40:23,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287589 states. [2021-03-10 22:40:28,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287589 to 190411. [2021-03-10 22:40:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190411 states, 190410 states have (on average 4.019452759834042) internal successors, (765344), 190410 states have internal predecessors, (765344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:30,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190411 states to 190411 states and 765344 transitions. [2021-03-10 22:40:30,688 INFO L78 Accepts]: Start accepts. Automaton has 190411 states and 765344 transitions. Word has length 46 [2021-03-10 22:40:30,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:40:30,688 INFO L480 AbstractCegarLoop]: Abstraction has 190411 states and 765344 transitions. [2021-03-10 22:40:30,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:30,688 INFO L276 IsEmpty]: Start isEmpty. Operand 190411 states and 765344 transitions. [2021-03-10 22:40:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:40:31,334 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:40:31,334 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:40:31,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-10 22:40:31,334 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:40:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:40:31,335 INFO L82 PathProgramCache]: Analyzing trace with hash -300064282, now seen corresponding path program 22 times [2021-03-10 22:40:31,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:40:31,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798093150] [2021-03-10 22:40:31,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:40:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:40:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:40:31,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798093150] [2021-03-10 22:40:31,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:40:31,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:40:31,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277537395] [2021-03-10 22:40:31,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:40:31,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:40:31,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:40:31,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:40:31,442 INFO L87 Difference]: Start difference. First operand 190411 states and 765344 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:34,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:40:34,679 INFO L93 Difference]: Finished difference Result 295333 states and 1175576 transitions. [2021-03-10 22:40:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:40:34,699 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:40:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:40:36,356 INFO L225 Difference]: With dead ends: 295333 [2021-03-10 22:40:36,356 INFO L226 Difference]: Without dead ends: 289109 [2021-03-10 22:40:36,356 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:40:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289109 states. [2021-03-10 22:40:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289109 to 197773. [2021-03-10 22:40:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197773 states, 197772 states have (on average 3.9816859818376718) internal successors, (787466), 197772 states have internal predecessors, (787466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197773 states to 197773 states and 787466 transitions. [2021-03-10 22:40:45,967 INFO L78 Accepts]: Start accepts. Automaton has 197773 states and 787466 transitions. Word has length 46 [2021-03-10 22:40:45,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:40:45,968 INFO L480 AbstractCegarLoop]: Abstraction has 197773 states and 787466 transitions. [2021-03-10 22:40:45,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:45,968 INFO L276 IsEmpty]: Start isEmpty. Operand 197773 states and 787466 transitions. [2021-03-10 22:40:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:40:46,562 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:40:46,562 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:40:46,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-10 22:40:46,562 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:40:46,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:40:46,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1536830164, now seen corresponding path program 23 times [2021-03-10 22:40:46,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:40:46,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177028126] [2021-03-10 22:40:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:40:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:40:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:40:46,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177028126] [2021-03-10 22:40:46,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:40:46,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:40:46,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519605663] [2021-03-10 22:40:46,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:40:46,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:40:46,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:40:46,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:40:46,609 INFO L87 Difference]: Start difference. First operand 197773 states and 787466 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:48,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:40:48,782 INFO L93 Difference]: Finished difference Result 299086 states and 1182852 transitions. [2021-03-10 22:40:48,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 22:40:48,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:40:48,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:40:50,347 INFO L225 Difference]: With dead ends: 299086 [2021-03-10 22:40:50,347 INFO L226 Difference]: Without dead ends: 298566 [2021-03-10 22:40:50,347 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 33.0ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:40:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298566 states. [2021-03-10 22:40:56,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298566 to 198823. [2021-03-10 22:40:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198823 states, 198822 states have (on average 3.9825371437768458) internal successors, (791816), 198822 states have internal predecessors, (791816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:58,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198823 states to 198823 states and 791816 transitions. [2021-03-10 22:40:58,002 INFO L78 Accepts]: Start accepts. Automaton has 198823 states and 791816 transitions. Word has length 46 [2021-03-10 22:40:58,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:40:58,002 INFO L480 AbstractCegarLoop]: Abstraction has 198823 states and 791816 transitions. [2021-03-10 22:40:58,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:40:58,002 INFO L276 IsEmpty]: Start isEmpty. Operand 198823 states and 791816 transitions. [2021-03-10 22:40:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:40:59,344 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:40:59,344 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:40:59,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-10 22:40:59,344 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:40:59,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:40:59,345 INFO L82 PathProgramCache]: Analyzing trace with hash -746721718, now seen corresponding path program 24 times [2021-03-10 22:40:59,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:40:59,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57583220] [2021-03-10 22:40:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:40:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:40:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:40:59,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57583220] [2021-03-10 22:40:59,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:40:59,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:40:59,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080398733] [2021-03-10 22:40:59,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:40:59,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:40:59,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:40:59,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:40:59,447 INFO L87 Difference]: Start difference. First operand 198823 states and 791816 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:01,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:41:01,612 INFO L93 Difference]: Finished difference Result 294761 states and 1162068 transitions. [2021-03-10 22:41:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:41:01,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:41:01,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:41:02,613 INFO L225 Difference]: With dead ends: 294761 [2021-03-10 22:41:02,613 INFO L226 Difference]: Without dead ends: 292673 [2021-03-10 22:41:02,613 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:41:04,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292673 states. [2021-03-10 22:41:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292673 to 193969. [2021-03-10 22:41:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193969 states, 193968 states have (on average 3.976387857790976) internal successors, (771292), 193968 states have internal predecessors, (771292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193969 states to 193969 states and 771292 transitions. [2021-03-10 22:41:12,102 INFO L78 Accepts]: Start accepts. Automaton has 193969 states and 771292 transitions. Word has length 46 [2021-03-10 22:41:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:41:12,102 INFO L480 AbstractCegarLoop]: Abstraction has 193969 states and 771292 transitions. [2021-03-10 22:41:12,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:12,102 INFO L276 IsEmpty]: Start isEmpty. Operand 193969 states and 771292 transitions. [2021-03-10 22:41:12,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:41:12,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:41:12,918 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:41:12,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-10 22:41:12,919 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:41:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:41:12,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1798406086, now seen corresponding path program 25 times [2021-03-10 22:41:12,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:41:12,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180327797] [2021-03-10 22:41:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:41:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:41:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:41:13,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180327797] [2021-03-10 22:41:13,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:41:13,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:41:13,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277309734] [2021-03-10 22:41:13,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:41:13,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:41:13,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:41:13,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:41:13,025 INFO L87 Difference]: Start difference. First operand 193969 states and 771292 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:41:17,267 INFO L93 Difference]: Finished difference Result 293030 states and 1142523 transitions. [2021-03-10 22:41:17,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:41:17,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:41:17,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:41:18,685 INFO L225 Difference]: With dead ends: 293030 [2021-03-10 22:41:18,685 INFO L226 Difference]: Without dead ends: 291722 [2021-03-10 22:41:18,685 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:41:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291722 states. [2021-03-10 22:41:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291722 to 200246. [2021-03-10 22:41:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200246 states, 200245 states have (on average 3.9184449049913854) internal successors, (784649), 200245 states have internal predecessors, (784649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200246 states to 200246 states and 784649 transitions. [2021-03-10 22:41:26,481 INFO L78 Accepts]: Start accepts. Automaton has 200246 states and 784649 transitions. Word has length 46 [2021-03-10 22:41:26,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:41:26,481 INFO L480 AbstractCegarLoop]: Abstraction has 200246 states and 784649 transitions. [2021-03-10 22:41:26,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 200246 states and 784649 transitions. [2021-03-10 22:41:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:41:27,887 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:41:27,887 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:41:27,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-10 22:41:27,887 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:41:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:41:27,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1370272520, now seen corresponding path program 26 times [2021-03-10 22:41:27,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:41:27,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825725202] [2021-03-10 22:41:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:41:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:41:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:41:27,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825725202] [2021-03-10 22:41:27,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:41:27,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:41:27,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579594055] [2021-03-10 22:41:27,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:41:27,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:41:27,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:41:27,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:41:27,941 INFO L87 Difference]: Start difference. First operand 200246 states and 784649 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:41:30,073 INFO L93 Difference]: Finished difference Result 293831 states and 1136141 transitions. [2021-03-10 22:41:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:41:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:41:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:41:31,667 INFO L225 Difference]: With dead ends: 293831 [2021-03-10 22:41:31,668 INFO L226 Difference]: Without dead ends: 290963 [2021-03-10 22:41:31,668 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:41:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290963 states. [2021-03-10 22:41:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290963 to 193515. [2021-03-10 22:41:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193515 states, 193514 states have (on average 3.905562388250979) internal successors, (755781), 193514 states have internal predecessors, (755781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193515 states to 193515 states and 755781 transitions. [2021-03-10 22:41:39,222 INFO L78 Accepts]: Start accepts. Automaton has 193515 states and 755781 transitions. Word has length 46 [2021-03-10 22:41:39,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:41:39,222 INFO L480 AbstractCegarLoop]: Abstraction has 193515 states and 755781 transitions. [2021-03-10 22:41:39,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:39,222 INFO L276 IsEmpty]: Start isEmpty. Operand 193515 states and 755781 transitions. [2021-03-10 22:41:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:41:39,718 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:41:39,718 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:41:39,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-10 22:41:39,718 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:41:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:41:39,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2029550822, now seen corresponding path program 27 times [2021-03-10 22:41:39,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:41:39,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218240179] [2021-03-10 22:41:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:41:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:41:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:41:39,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218240179] [2021-03-10 22:41:39,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:41:39,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:41:39,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290346000] [2021-03-10 22:41:39,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:41:39,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:41:39,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:41:39,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:41:39,774 INFO L87 Difference]: Start difference. First operand 193515 states and 755781 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:41:42,760 INFO L93 Difference]: Finished difference Result 283290 states and 1078797 transitions. [2021-03-10 22:41:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:41:42,761 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:41:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:41:43,803 INFO L225 Difference]: With dead ends: 283290 [2021-03-10 22:41:43,803 INFO L226 Difference]: Without dead ends: 280266 [2021-03-10 22:41:43,803 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:41:44,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280266 states. [2021-03-10 22:41:49,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280266 to 193510. [2021-03-10 22:41:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193510 states, 193509 states have (on average 3.849350676195939) internal successors, (744884), 193509 states have internal predecessors, (744884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193510 states to 193510 states and 744884 transitions. [2021-03-10 22:41:52,326 INFO L78 Accepts]: Start accepts. Automaton has 193510 states and 744884 transitions. Word has length 46 [2021-03-10 22:41:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:41:52,326 INFO L480 AbstractCegarLoop]: Abstraction has 193510 states and 744884 transitions. [2021-03-10 22:41:52,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 193510 states and 744884 transitions. [2021-03-10 22:41:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:41:52,959 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:41:52,959 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:41:52,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-10 22:41:52,962 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:41:52,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:41:52,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1260957358, now seen corresponding path program 28 times [2021-03-10 22:41:52,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:41:52,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906459143] [2021-03-10 22:41:52,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:41:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:41:53,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:41:53,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906459143] [2021-03-10 22:41:53,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:41:53,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:41:53,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573321506] [2021-03-10 22:41:53,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:41:53,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:41:53,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:41:53,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:41:53,065 INFO L87 Difference]: Start difference. First operand 193510 states and 744884 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:41:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:41:55,841 INFO L93 Difference]: Finished difference Result 270531 states and 1004554 transitions. [2021-03-10 22:41:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:41:55,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:41:55,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:41:57,744 INFO L225 Difference]: With dead ends: 270531 [2021-03-10 22:41:57,744 INFO L226 Difference]: Without dead ends: 262632 [2021-03-10 22:41:57,744 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-03-10 22:41:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262632 states. [2021-03-10 22:42:04,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262632 to 177887. [2021-03-10 22:42:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177887 states, 177886 states have (on average 3.7640623770279844) internal successors, (669574), 177886 states have internal predecessors, (669574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177887 states to 177887 states and 669574 transitions. [2021-03-10 22:42:06,000 INFO L78 Accepts]: Start accepts. Automaton has 177887 states and 669574 transitions. Word has length 46 [2021-03-10 22:42:06,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:42:06,000 INFO L480 AbstractCegarLoop]: Abstraction has 177887 states and 669574 transitions. [2021-03-10 22:42:06,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:06,001 INFO L276 IsEmpty]: Start isEmpty. Operand 177887 states and 669574 transitions. [2021-03-10 22:42:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:42:06,521 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:42:06,521 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:42:06,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-10 22:42:06,521 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:42:06,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:42:06,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1334758820, now seen corresponding path program 29 times [2021-03-10 22:42:06,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:42:06,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808569027] [2021-03-10 22:42:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:42:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:42:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:42:06,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808569027] [2021-03-10 22:42:06,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:42:06,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:42:06,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980880532] [2021-03-10 22:42:06,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:42:06,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:42:06,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:42:06,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:42:06,566 INFO L87 Difference]: Start difference. First operand 177887 states and 669574 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:08,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:42:08,679 INFO L93 Difference]: Finished difference Result 248384 states and 919697 transitions. [2021-03-10 22:42:08,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:42:08,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:42:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:42:09,399 INFO L225 Difference]: With dead ends: 248384 [2021-03-10 22:42:09,399 INFO L226 Difference]: Without dead ends: 248064 [2021-03-10 22:42:09,400 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:42:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248064 states. [2021-03-10 22:42:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248064 to 177855. [2021-03-10 22:42:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177855 states, 177854 states have (on average 3.7614110450144502) internal successors, (668982), 177854 states have internal predecessors, (668982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177855 states to 177855 states and 668982 transitions. [2021-03-10 22:42:16,135 INFO L78 Accepts]: Start accepts. Automaton has 177855 states and 668982 transitions. Word has length 46 [2021-03-10 22:42:16,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:42:16,135 INFO L480 AbstractCegarLoop]: Abstraction has 177855 states and 668982 transitions. [2021-03-10 22:42:16,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:16,136 INFO L276 IsEmpty]: Start isEmpty. Operand 177855 states and 668982 transitions. [2021-03-10 22:42:16,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:42:16,569 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:42:16,569 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:42:16,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-10 22:42:16,569 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:42:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:42:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1029432924, now seen corresponding path program 30 times [2021-03-10 22:42:16,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:42:16,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255032724] [2021-03-10 22:42:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:42:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:42:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:42:16,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255032724] [2021-03-10 22:42:16,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:42:16,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:42:16,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888248429] [2021-03-10 22:42:16,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:42:16,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:42:16,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:42:16,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:42:16,628 INFO L87 Difference]: Start difference. First operand 177855 states and 668982 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:42:19,383 INFO L93 Difference]: Finished difference Result 251976 states and 930539 transitions. [2021-03-10 22:42:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:42:19,391 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:42:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:42:20,399 INFO L225 Difference]: With dead ends: 251976 [2021-03-10 22:42:20,399 INFO L226 Difference]: Without dead ends: 249960 [2021-03-10 22:42:20,400 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-03-10 22:42:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249960 states. [2021-03-10 22:42:25,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249960 to 176831. [2021-03-10 22:42:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176831 states, 176830 states have (on average 3.750076344511678) internal successors, (663126), 176830 states have internal predecessors, (663126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176831 states to 176831 states and 663126 transitions. [2021-03-10 22:42:27,403 INFO L78 Accepts]: Start accepts. Automaton has 176831 states and 663126 transitions. Word has length 46 [2021-03-10 22:42:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:42:27,403 INFO L480 AbstractCegarLoop]: Abstraction has 176831 states and 663126 transitions. [2021-03-10 22:42:27,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 176831 states and 663126 transitions. [2021-03-10 22:42:27,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:42:27,953 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:42:27,953 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:42:27,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-10 22:42:27,953 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:42:27,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:42:27,953 INFO L82 PathProgramCache]: Analyzing trace with hash -75273820, now seen corresponding path program 31 times [2021-03-10 22:42:27,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:42:27,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711850821] [2021-03-10 22:42:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:42:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:42:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:42:28,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711850821] [2021-03-10 22:42:28,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:42:28,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:42:28,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212300058] [2021-03-10 22:42:28,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:42:28,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:42:28,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:42:28,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:42:28,021 INFO L87 Difference]: Start difference. First operand 176831 states and 663126 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:30,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:42:30,373 INFO L93 Difference]: Finished difference Result 243984 states and 901479 transitions. [2021-03-10 22:42:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:42:30,373 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:42:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:42:32,146 INFO L225 Difference]: With dead ends: 243984 [2021-03-10 22:42:32,147 INFO L226 Difference]: Without dead ends: 237760 [2021-03-10 22:42:32,147 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 86.9ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:42:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237760 states. [2021-03-10 22:42:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237760 to 173831. [2021-03-10 22:42:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173831 states, 173830 states have (on average 3.735304607950296) internal successors, (649308), 173830 states have internal predecessors, (649308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173831 states to 173831 states and 649308 transitions. [2021-03-10 22:42:39,166 INFO L78 Accepts]: Start accepts. Automaton has 173831 states and 649308 transitions. Word has length 46 [2021-03-10 22:42:39,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:42:39,166 INFO L480 AbstractCegarLoop]: Abstraction has 173831 states and 649308 transitions. [2021-03-10 22:42:39,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:39,166 INFO L276 IsEmpty]: Start isEmpty. Operand 173831 states and 649308 transitions. [2021-03-10 22:42:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:42:40,477 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:42:40,477 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:42:40,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-10 22:42:40,478 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:42:40,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:42:40,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1508962954, now seen corresponding path program 32 times [2021-03-10 22:42:40,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:42:40,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623573650] [2021-03-10 22:42:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:42:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:42:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:42:40,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623573650] [2021-03-10 22:42:40,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:42:40,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-10 22:42:40,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654320138] [2021-03-10 22:42:40,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:42:40,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:42:40,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:42:40,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:42:40,581 INFO L87 Difference]: Start difference. First operand 173831 states and 649308 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:42:42,780 INFO L93 Difference]: Finished difference Result 243411 states and 895074 transitions. [2021-03-10 22:42:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 22:42:42,780 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:42:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:42:43,610 INFO L225 Difference]: With dead ends: 243411 [2021-03-10 22:42:43,610 INFO L226 Difference]: Without dead ends: 233779 [2021-03-10 22:42:43,610 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-03-10 22:42:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233779 states. [2021-03-10 22:42:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233779 to 176360. [2021-03-10 22:42:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176360 states, 176359 states have (on average 3.7175307185910555) internal successors, (655620), 176359 states have internal predecessors, (655620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176360 states to 176360 states and 655620 transitions. [2021-03-10 22:42:50,441 INFO L78 Accepts]: Start accepts. Automaton has 176360 states and 655620 transitions. Word has length 46 [2021-03-10 22:42:50,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:42:50,441 INFO L480 AbstractCegarLoop]: Abstraction has 176360 states and 655620 transitions. [2021-03-10 22:42:50,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 176360 states and 655620 transitions. [2021-03-10 22:42:51,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:42:51,005 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:42:51,005 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:42:51,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-10 22:42:51,005 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:42:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:42:51,006 INFO L82 PathProgramCache]: Analyzing trace with hash 61777796, now seen corresponding path program 33 times [2021-03-10 22:42:51,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:42:51,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123913066] [2021-03-10 22:42:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:42:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:42:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:42:51,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123913066] [2021-03-10 22:42:51,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:42:51,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:42:51,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404216936] [2021-03-10 22:42:51,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:42:51,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:42:51,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:42:51,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:42:51,055 INFO L87 Difference]: Start difference. First operand 176360 states and 655620 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:42:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:42:53,219 INFO L93 Difference]: Finished difference Result 252502 states and 922596 transitions. [2021-03-10 22:42:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 22:42:53,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:42:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:42:53,990 INFO L225 Difference]: With dead ends: 252502 [2021-03-10 22:42:53,990 INFO L226 Difference]: Without dead ends: 252270 [2021-03-10 22:42:53,991 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:42:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252270 states. [2021-03-10 22:42:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252270 to 176292. [2021-03-10 22:42:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176292 states, 176291 states have (on average 3.7161511364732176) internal successors, (655124), 176291 states have internal predecessors, (655124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:00,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176292 states to 176292 states and 655124 transitions. [2021-03-10 22:43:00,819 INFO L78 Accepts]: Start accepts. Automaton has 176292 states and 655124 transitions. Word has length 46 [2021-03-10 22:43:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:43:00,819 INFO L480 AbstractCegarLoop]: Abstraction has 176292 states and 655124 transitions. [2021-03-10 22:43:00,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 176292 states and 655124 transitions. [2021-03-10 22:43:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:43:01,276 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:43:01,276 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:43:01,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-10 22:43:01,276 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:43:01,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:43:01,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1480378492, now seen corresponding path program 34 times [2021-03-10 22:43:01,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:43:01,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827727378] [2021-03-10 22:43:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:43:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:43:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:43:01,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827727378] [2021-03-10 22:43:01,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:43:01,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:43:01,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458235036] [2021-03-10 22:43:01,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:43:01,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:43:01,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:43:01,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:43:01,334 INFO L87 Difference]: Start difference. First operand 176292 states and 655124 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:43:03,594 INFO L93 Difference]: Finished difference Result 256485 states and 935781 transitions. [2021-03-10 22:43:03,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:43:03,595 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:43:03,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:43:05,095 INFO L225 Difference]: With dead ends: 256485 [2021-03-10 22:43:05,103 INFO L226 Difference]: Without dead ends: 255477 [2021-03-10 22:43:05,103 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-03-10 22:43:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255477 states. [2021-03-10 22:43:10,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255477 to 174951. [2021-03-10 22:43:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174951 states, 174950 states have (on average 3.708448128036582) internal successors, (648793), 174950 states have internal predecessors, (648793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174951 states to 174951 states and 648793 transitions. [2021-03-10 22:43:11,591 INFO L78 Accepts]: Start accepts. Automaton has 174951 states and 648793 transitions. Word has length 46 [2021-03-10 22:43:11,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:43:11,591 INFO L480 AbstractCegarLoop]: Abstraction has 174951 states and 648793 transitions. [2021-03-10 22:43:11,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 174951 states and 648793 transitions. [2021-03-10 22:43:13,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:43:13,053 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:43:13,053 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:43:13,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-10 22:43:13,054 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:43:13,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:43:13,054 INFO L82 PathProgramCache]: Analyzing trace with hash 647892868, now seen corresponding path program 35 times [2021-03-10 22:43:13,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:43:13,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990566455] [2021-03-10 22:43:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:43:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:43:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:43:13,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990566455] [2021-03-10 22:43:13,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:43:13,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:43:13,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538427972] [2021-03-10 22:43:13,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:43:13,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:43:13,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:43:13,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:43:13,116 INFO L87 Difference]: Start difference. First operand 174951 states and 648793 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:15,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:43:15,309 INFO L93 Difference]: Finished difference Result 244216 states and 893757 transitions. [2021-03-10 22:43:15,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:43:15,309 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:43:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:43:16,084 INFO L225 Difference]: With dead ends: 244216 [2021-03-10 22:43:16,084 INFO L226 Difference]: Without dead ends: 241900 [2021-03-10 22:43:16,084 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:43:17,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241900 states. [2021-03-10 22:43:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241900 to 172803. [2021-03-10 22:43:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172803 states, 172802 states have (on average 3.7055358155576905) internal successors, (640324), 172802 states have internal predecessors, (640324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172803 states to 172803 states and 640324 transitions. [2021-03-10 22:43:23,862 INFO L78 Accepts]: Start accepts. Automaton has 172803 states and 640324 transitions. Word has length 46 [2021-03-10 22:43:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:43:23,863 INFO L480 AbstractCegarLoop]: Abstraction has 172803 states and 640324 transitions. [2021-03-10 22:43:23,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 172803 states and 640324 transitions. [2021-03-10 22:43:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:43:24,517 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:43:24,517 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:43:24,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-10 22:43:24,518 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:43:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:43:24,518 INFO L82 PathProgramCache]: Analyzing trace with hash -771547030, now seen corresponding path program 36 times [2021-03-10 22:43:24,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:43:24,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834972114] [2021-03-10 22:43:24,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:43:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:43:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:43:24,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834972114] [2021-03-10 22:43:24,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:43:24,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-10 22:43:24,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047843698] [2021-03-10 22:43:24,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:43:24,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:43:24,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:43:24,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:43:24,643 INFO L87 Difference]: Start difference. First operand 172803 states and 640324 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:43:27,520 INFO L93 Difference]: Finished difference Result 246288 states and 898984 transitions. [2021-03-10 22:43:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 22:43:27,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:43:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:43:28,968 INFO L225 Difference]: With dead ends: 246288 [2021-03-10 22:43:28,968 INFO L226 Difference]: Without dead ends: 244180 [2021-03-10 22:43:28,968 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1016.7ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-03-10 22:43:29,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244180 states. [2021-03-10 22:43:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244180 to 178415. [2021-03-10 22:43:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178415 states, 178414 states have (on average 3.689693633907653) internal successors, (658293), 178414 states have internal predecessors, (658293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:35,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178415 states to 178415 states and 658293 transitions. [2021-03-10 22:43:35,225 INFO L78 Accepts]: Start accepts. Automaton has 178415 states and 658293 transitions. Word has length 46 [2021-03-10 22:43:35,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:43:35,225 INFO L480 AbstractCegarLoop]: Abstraction has 178415 states and 658293 transitions. [2021-03-10 22:43:35,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:35,226 INFO L276 IsEmpty]: Start isEmpty. Operand 178415 states and 658293 transitions. [2021-03-10 22:43:35,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 22:43:35,683 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:43:35,683 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:43:35,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-10 22:43:35,683 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:43:35,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:43:35,683 INFO L82 PathProgramCache]: Analyzing trace with hash -268062650, now seen corresponding path program 37 times [2021-03-10 22:43:35,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:43:35,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808904029] [2021-03-10 22:43:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:43:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:43:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:43:36,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808904029] [2021-03-10 22:43:36,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:43:36,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-10 22:43:36,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184375608] [2021-03-10 22:43:36,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:43:36,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:43:36,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:43:36,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:43:36,674 INFO L87 Difference]: Start difference. First operand 178415 states and 658293 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:43:38,968 INFO L93 Difference]: Finished difference Result 264778 states and 956726 transitions. [2021-03-10 22:43:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 22:43:38,968 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 22:43:38,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:43:39,887 INFO L225 Difference]: With dead ends: 264778 [2021-03-10 22:43:39,887 INFO L226 Difference]: Without dead ends: 255788 [2021-03-10 22:43:39,887 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1025.2ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-03-10 22:43:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255788 states. Received shutdown request... [2021-03-10 22:43:45,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255788 to 170344. [2021-03-10 22:43:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170344 states, 170343 states have (on average 3.651931690765103) internal successors, (622081), 170343 states have internal predecessors, (622081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:43:45,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-10 22:43:45,581 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 22:43:45,596 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 22:43:45,597 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 10:43:45 BasicIcfg [2021-03-10 22:43:45,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 22:43:45,598 INFO L168 Benchmark]: Toolchain (without parser) took 561193.77 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 236.3 MB in the beginning and 10.8 GB in the end (delta: -10.6 GB). Peak memory consumption was 5.5 GB. Max. memory is 16.0 GB. [2021-03-10 22:43:45,598 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 22:43:45,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.09 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 22:43:45,598 INFO L168 Benchmark]: Boogie Preprocessor took 33.15 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:43:45,598 INFO L168 Benchmark]: RCFGBuilder took 455.84 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 230.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:43:45,598 INFO L168 Benchmark]: TraceAbstraction took 560656.89 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 230.7 MB in the beginning and 10.8 GB in the end (delta: -10.6 GB). Peak memory consumption was 5.5 GB. Max. memory is 16.0 GB. [2021-03-10 22:43:45,599 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 0.25 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.09 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.15 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 455.84 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 230.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 560656.89 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 230.7 MB in the beginning and 10.8 GB in the end (delta: -10.6 GB). Peak memory consumption was 5.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 110). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 560420.5ms, OverallIterations: 37, TraceHistogramMax: 1, EmptinessCheckTime: 31629.8ms, AutomataDifference: 170587.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23637.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3918 SDtfs, 6229 SDslu, 13548 SDs, 0 SdLazy, 13738 SolverSat, 2427 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9075.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 515 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 372 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 3936.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=224674occurred in iteration=10, InterpolantAutomatonStates: 377, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 330407.2ms AutomataMinimizationTime, 37 MinimizatonAttempts, 3387655 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 79.4ms SsaConstructionTime, 356.6ms SatisfiabilityAnalysisTime, 3356.6ms InterpolantComputationTime, 1702 NumberOfCodeBlocks, 1702 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1665 ConstructedInterpolants, 0 QuantifiedInterpolants, 4999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 37 InterpolantComputations, 37 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