/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/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 22:18:32,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 22:18:32,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 22:18:32,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 22:18:32,581 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 22:18:32,607 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 22:18:32,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 22:18:32,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 22:18:32,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 22:18:32,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 22:18:32,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 22:18:32,611 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 22:18:32,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 22:18:32,611 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 22:18:32,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 22:18:32,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 22:18:32,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 22:18:32,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 22:18:32,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 22:18:32,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 22:18:32,612 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 22:18:32,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 22:18:32,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 22:18:32,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 22:18:32,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 22:18:32,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 22:18:32,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 22:18:32,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 22:18:32,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 22:18:32,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 22:18:32,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 22:18:32,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 22:18:32,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 22:18:32,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 22:18:32,614 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 22:18:32,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 22:18:32,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 22:18:32,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 22:18:32,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 22:18:32,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 22:18:32,865 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-10 22:18:32,866 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-10 22:18:32,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-03-10 22:18:32,866 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-03-10 22:18:32,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 22:18:32,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-10 22:18:32,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 22:18:32,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 22:18:32,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 22:18:32,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (1/1) ... [2021-03-10 22:18:32,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (1/1) ... [2021-03-10 22:18:32,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 22:18:32,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 22:18:32,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 22:18:32,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 22:18:32,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (1/1) ... [2021-03-10 22:18:32,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (1/1) ... [2021-03-10 22:18:32,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (1/1) ... [2021-03-10 22:18:32,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (1/1) ... [2021-03-10 22:18:32,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (1/1) ... [2021-03-10 22:18:32,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (1/1) ... [2021-03-10 22:18:32,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (1/1) ... [2021-03-10 22:18:32,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 22:18:32,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 22:18:32,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 22:18:32,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 22:18:32,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (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 22:18:32,991 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-10 22:18:32,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-10 22:18:32,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-10 22:18:32,992 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-10 22:18:32,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-10 22:18:32,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-10 22:18:32,992 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-10 22:18:32,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 22:18:32,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 22:18:32,993 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-10 22:18:32,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-10 22:18:32,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-10 22:18:32,993 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-10 22:18:32,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-10 22:18:32,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-10 22:18:32,993 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-10 22:18:32,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-10 22:18:32,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-10 22:18:32,994 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-10 22:18:32,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-10 22:18:32,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-10 22:18:32,996 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 22:18:33,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 22:18:33,169 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-10 22:18:33,170 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:18:33 BoogieIcfgContainer [2021-03-10 22:18:33,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 22:18:33,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 22:18:33,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 22:18:33,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 22:18:33,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:32" (1/2) ... [2021-03-10 22:18:33,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648c6841 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 10:18:33, skipping insertion in model container [2021-03-10 22:18:33,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:18:33" (2/2) ... [2021-03-10 22:18:33,174 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-03-10 22:18:33,177 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 22:18:33,177 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 22:18:33,196 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 22:18:33,197 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 22:18:33,320 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-03-10 22:18:33,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-03-10 22:18:33,342 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 22:18:33,343 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 22:18:33,343 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 22:18:33,343 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 22:18:33,343 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 22:18:33,343 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 22:18:33,343 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 22:18:33,343 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 22:18:33,350 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-03-10 22:18:33,712 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:33,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:33,805 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:33,806 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:33,806 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:33,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1343820696, now seen corresponding path program 1 times [2021-03-10 22:18:33,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:33,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138158808] [2021-03-10 22:18:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:33,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138158808] [2021-03-10 22:18:33,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:33,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 22:18:33,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061938432] [2021-03-10 22:18:33,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 22:18:33,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:33,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 22:18:33,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:18:33,983 INFO L87 Difference]: Start difference. First operand has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:34,054 INFO L93 Difference]: Finished difference Result 5614 states and 20074 transitions. [2021-03-10 22:18:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 22:18:34,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:34,116 INFO L225 Difference]: With dead ends: 5614 [2021-03-10 22:18:34,117 INFO L226 Difference]: Without dead ends: 5614 [2021-03-10 22:18:34,118 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:18:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-03-10 22:18:34,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 5614. [2021-03-10 22:18:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 5613 states have (on average 3.5763406378050955) internal successors, (20074), 5613 states have internal predecessors, (20074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 20074 transitions. [2021-03-10 22:18:34,368 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 20074 transitions. Word has length 47 [2021-03-10 22:18:34,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:34,369 INFO L480 AbstractCegarLoop]: Abstraction has 5614 states and 20074 transitions. [2021-03-10 22:18:34,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:34,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 20074 transitions. [2021-03-10 22:18:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:34,386 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:34,386 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:34,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 22:18:34,387 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:34,389 INFO L82 PathProgramCache]: Analyzing trace with hash -607358788, now seen corresponding path program 2 times [2021-03-10 22:18:34,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:34,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845002405] [2021-03-10 22:18:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:34,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845002405] [2021-03-10 22:18:34,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:34,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 22:18:34,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900658588] [2021-03-10 22:18:34,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 22:18:34,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:34,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 22:18:34,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:18:34,464 INFO L87 Difference]: Start difference. First operand 5614 states and 20074 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:34,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:34,495 INFO L93 Difference]: Finished difference Result 4822 states and 17110 transitions. [2021-03-10 22:18:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 22:18:34,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:34,516 INFO L225 Difference]: With dead ends: 4822 [2021-03-10 22:18:34,516 INFO L226 Difference]: Without dead ends: 4822 [2021-03-10 22:18:34,517 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:18:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2021-03-10 22:18:34,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4822. [2021-03-10 22:18:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4821 states have (on average 3.5490562124040657) internal successors, (17110), 4821 states have internal predecessors, (17110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 17110 transitions. [2021-03-10 22:18:34,650 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 17110 transitions. Word has length 47 [2021-03-10 22:18:34,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:34,650 INFO L480 AbstractCegarLoop]: Abstraction has 4822 states and 17110 transitions. [2021-03-10 22:18:34,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 17110 transitions. [2021-03-10 22:18:34,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:34,662 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:34,663 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:34,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 22:18:34,663 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:34,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1880871100, now seen corresponding path program 3 times [2021-03-10 22:18:34,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:34,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964309164] [2021-03-10 22:18:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:35,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964309164] [2021-03-10 22:18:35,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:35,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:18:35,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412888905] [2021-03-10 22:18:35,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:18:35,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:35,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:18:35,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:18:35,131 INFO L87 Difference]: Start difference. First operand 4822 states and 17110 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:36,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:36,344 INFO L93 Difference]: Finished difference Result 5573 states and 19644 transitions. [2021-03-10 22:18:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 22:18:36,344 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:36,365 INFO L225 Difference]: With dead ends: 5573 [2021-03-10 22:18:36,366 INFO L226 Difference]: Without dead ends: 5446 [2021-03-10 22:18:36,366 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 836.4ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 22:18:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2021-03-10 22:18:36,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5018. [2021-03-10 22:18:36,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5017 states have (on average 3.53757225433526) internal successors, (17748), 5017 states have internal predecessors, (17748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 17748 transitions. [2021-03-10 22:18:36,474 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 17748 transitions. Word has length 47 [2021-03-10 22:18:36,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:36,474 INFO L480 AbstractCegarLoop]: Abstraction has 5018 states and 17748 transitions. [2021-03-10 22:18:36,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 17748 transitions. [2021-03-10 22:18:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:36,485 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:36,486 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:36,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 22:18:36,486 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:36,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1097616762, now seen corresponding path program 4 times [2021-03-10 22:18:36,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:36,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691978232] [2021-03-10 22:18:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:36,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691978232] [2021-03-10 22:18:36,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:36,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:18:36,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185460132] [2021-03-10 22:18:36,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:18:36,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:36,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:18:36,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:18:36,782 INFO L87 Difference]: Start difference. First operand 5018 states and 17748 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:38,543 INFO L93 Difference]: Finished difference Result 7632 states and 26869 transitions. [2021-03-10 22:18:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-10 22:18:38,543 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:38,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:38,562 INFO L225 Difference]: With dead ends: 7632 [2021-03-10 22:18:38,562 INFO L226 Difference]: Without dead ends: 7543 [2021-03-10 22:18:38,562 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1044.3ms TimeCoverageRelationStatistics Valid=262, Invalid=2288, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 22:18:38,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7543 states. [2021-03-10 22:18:38,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7543 to 5222. [2021-03-10 22:18:38,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5221 states have (on average 3.5276766902892165) internal successors, (18418), 5221 states have internal predecessors, (18418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 18418 transitions. [2021-03-10 22:18:38,688 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 18418 transitions. Word has length 47 [2021-03-10 22:18:38,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:38,688 INFO L480 AbstractCegarLoop]: Abstraction has 5222 states and 18418 transitions. [2021-03-10 22:18:38,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 18418 transitions. [2021-03-10 22:18:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:38,697 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:38,697 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:38,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 22:18:38,698 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:38,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:38,698 INFO L82 PathProgramCache]: Analyzing trace with hash 246964854, now seen corresponding path program 5 times [2021-03-10 22:18:38,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:38,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260503987] [2021-03-10 22:18:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:39,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260503987] [2021-03-10 22:18:39,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:39,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:18:39,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164865340] [2021-03-10 22:18:39,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:18:39,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:39,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:18:39,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:18:39,026 INFO L87 Difference]: Start difference. First operand 5222 states and 18418 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:40,918 INFO L93 Difference]: Finished difference Result 8296 states and 29491 transitions. [2021-03-10 22:18:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 22:18:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:40,939 INFO L225 Difference]: With dead ends: 8296 [2021-03-10 22:18:40,940 INFO L226 Difference]: Without dead ends: 8193 [2021-03-10 22:18:40,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1109.2ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 22:18:40,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2021-03-10 22:18:41,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 5210. [2021-03-10 22:18:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5210 states, 5209 states have (on average 3.5288923017853713) internal successors, (18382), 5209 states have internal predecessors, (18382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 18382 transitions. [2021-03-10 22:18:41,122 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 18382 transitions. Word has length 47 [2021-03-10 22:18:41,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:41,122 INFO L480 AbstractCegarLoop]: Abstraction has 5210 states and 18382 transitions. [2021-03-10 22:18:41,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 18382 transitions. [2021-03-10 22:18:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:41,131 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:41,131 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:41,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 22:18:41,132 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1872194890, now seen corresponding path program 6 times [2021-03-10 22:18:41,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:41,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190621581] [2021-03-10 22:18:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:41,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190621581] [2021-03-10 22:18:41,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:41,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-10 22:18:41,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047057309] [2021-03-10 22:18:41,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 22:18:41,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:41,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 22:18:41,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:18:41,371 INFO L87 Difference]: Start difference. First operand 5210 states and 18382 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:42,770 INFO L93 Difference]: Finished difference Result 6915 states and 24041 transitions. [2021-03-10 22:18:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 22:18:42,770 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:42,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:42,785 INFO L225 Difference]: With dead ends: 6915 [2021-03-10 22:18:42,786 INFO L226 Difference]: Without dead ends: 6778 [2021-03-10 22:18:42,786 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 861.1ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 22:18:42,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2021-03-10 22:18:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 5402. [2021-03-10 22:18:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 3.517867061655249) internal successors, (19000), 5401 states have internal predecessors, (19000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 19000 transitions. [2021-03-10 22:18:42,898 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 19000 transitions. Word has length 47 [2021-03-10 22:18:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:42,899 INFO L480 AbstractCegarLoop]: Abstraction has 5402 states and 19000 transitions. [2021-03-10 22:18:42,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 19000 transitions. [2021-03-10 22:18:42,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:42,910 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:42,910 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:42,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 22:18:42,913 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:42,914 INFO L82 PathProgramCache]: Analyzing trace with hash 443897944, now seen corresponding path program 7 times [2021-03-10 22:18:42,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:42,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714868259] [2021-03-10 22:18:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:43,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714868259] [2021-03-10 22:18:43,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:43,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:18:43,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546108537] [2021-03-10 22:18:43,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:18:43,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:43,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:18:43,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:18:43,155 INFO L87 Difference]: Start difference. First operand 5402 states and 19000 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:44,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:44,823 INFO L93 Difference]: Finished difference Result 7850 states and 27581 transitions. [2021-03-10 22:18:44,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 22:18:44,824 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:44,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:44,840 INFO L225 Difference]: With dead ends: 7850 [2021-03-10 22:18:44,840 INFO L226 Difference]: Without dead ends: 7761 [2021-03-10 22:18:44,841 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1070.3ms TimeCoverageRelationStatistics Valid=298, Invalid=2564, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 22:18:44,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7761 states. [2021-03-10 22:18:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7761 to 5406. [2021-03-10 22:18:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 3.5167437557816834) internal successors, (19008), 5405 states have internal predecessors, (19008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 19008 transitions. [2021-03-10 22:18:44,950 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 19008 transitions. Word has length 47 [2021-03-10 22:18:44,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:44,951 INFO L480 AbstractCegarLoop]: Abstraction has 5406 states and 19008 transitions. [2021-03-10 22:18:44,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 19008 transitions. [2021-03-10 22:18:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:44,959 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:44,959 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, 1] [2021-03-10 22:18:44,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 22:18:44,959 INFO L428 AbstractCegarLoop]: === Iteration 8 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:44,959 INFO L82 PathProgramCache]: Analyzing trace with hash -406753964, now seen corresponding path program 8 times [2021-03-10 22:18:44,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:44,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258905270] [2021-03-10 22:18:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:45,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258905270] [2021-03-10 22:18:45,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:45,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:18:45,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081621412] [2021-03-10 22:18:45,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:18:45,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:45,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:18:45,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:18:45,223 INFO L87 Difference]: Start difference. First operand 5406 states and 19008 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:46,982 INFO L93 Difference]: Finished difference Result 8217 states and 29113 transitions. [2021-03-10 22:18:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 22:18:46,983 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:46,997 INFO L225 Difference]: With dead ends: 8217 [2021-03-10 22:18:46,998 INFO L226 Difference]: Without dead ends: 8086 [2021-03-10 22:18:46,998 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1018.1ms TimeCoverageRelationStatistics Valid=275, Invalid=2481, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 22:18:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2021-03-10 22:18:47,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 5366. [2021-03-10 22:18:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 3.5183597390493944) internal successors, (18876), 5365 states have internal predecessors, (18876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18876 transitions. [2021-03-10 22:18:47,136 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18876 transitions. Word has length 47 [2021-03-10 22:18:47,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:47,136 INFO L480 AbstractCegarLoop]: Abstraction has 5366 states and 18876 transitions. [2021-03-10 22:18:47,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:47,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18876 transitions. [2021-03-10 22:18:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:47,144 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:47,144 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:47,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 22:18:47,144 INFO L428 AbstractCegarLoop]: === Iteration 9 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:47,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:47,145 INFO L82 PathProgramCache]: Analyzing trace with hash -813197124, now seen corresponding path program 9 times [2021-03-10 22:18:47,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:47,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620354720] [2021-03-10 22:18:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:47,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620354720] [2021-03-10 22:18:47,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:47,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:18:47,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772689513] [2021-03-10 22:18:47,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:47,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:47,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:47,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:47,384 INFO L87 Difference]: Start difference. First operand 5366 states and 18876 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:48,519 INFO L93 Difference]: Finished difference Result 6007 states and 21031 transitions. [2021-03-10 22:18:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:18:48,519 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:48,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:48,529 INFO L225 Difference]: With dead ends: 6007 [2021-03-10 22:18:48,529 INFO L226 Difference]: Without dead ends: 5880 [2021-03-10 22:18:48,530 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 723.6ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 22:18:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2021-03-10 22:18:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5378. [2021-03-10 22:18:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5377 states have (on average 3.5160870373814395) internal successors, (18906), 5377 states have internal predecessors, (18906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18906 transitions. [2021-03-10 22:18:48,623 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18906 transitions. Word has length 47 [2021-03-10 22:18:48,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:48,623 INFO L480 AbstractCegarLoop]: Abstraction has 5378 states and 18906 transitions. [2021-03-10 22:18:48,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18906 transitions. [2021-03-10 22:18:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:48,632 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:48,632 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:48,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 22:18:48,632 INFO L428 AbstractCegarLoop]: === Iteration 10 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:48,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1596451462, now seen corresponding path program 10 times [2021-03-10 22:18:48,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:48,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919774028] [2021-03-10 22:18:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:48,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919774028] [2021-03-10 22:18:48,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:48,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:18:48,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911585532] [2021-03-10 22:18:48,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:48,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:48,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:48,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:48,882 INFO L87 Difference]: Start difference. First operand 5378 states and 18906 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:50,729 INFO L93 Difference]: Finished difference Result 7954 states and 27964 transitions. [2021-03-10 22:18:50,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 22:18:50,729 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:50,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:50,743 INFO L225 Difference]: With dead ends: 7954 [2021-03-10 22:18:50,743 INFO L226 Difference]: Without dead ends: 7865 [2021-03-10 22:18:50,744 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1116.0ms TimeCoverageRelationStatistics Valid=301, Invalid=2779, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 22:18:50,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2021-03-10 22:18:50,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 5394. [2021-03-10 22:18:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 3.5141850547005378) internal successors, (18952), 5393 states have internal predecessors, (18952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18952 transitions. [2021-03-10 22:18:50,866 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18952 transitions. Word has length 47 [2021-03-10 22:18:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:50,867 INFO L480 AbstractCegarLoop]: Abstraction has 5394 states and 18952 transitions. [2021-03-10 22:18:50,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18952 transitions. [2021-03-10 22:18:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:50,875 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:50,876 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:50,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 22:18:50,876 INFO L428 AbstractCegarLoop]: === Iteration 11 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:50,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:50,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1847863926, now seen corresponding path program 11 times [2021-03-10 22:18:50,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:50,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167376160] [2021-03-10 22:18:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:51,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167376160] [2021-03-10 22:18:51,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:51,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:18:51,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223346188] [2021-03-10 22:18:51,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:51,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:51,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:51,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:51,146 INFO L87 Difference]: Start difference. First operand 5394 states and 18952 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:53,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:53,136 INFO L93 Difference]: Finished difference Result 8522 states and 30214 transitions. [2021-03-10 22:18:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 22:18:53,136 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:53,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:53,151 INFO L225 Difference]: With dead ends: 8522 [2021-03-10 22:18:53,151 INFO L226 Difference]: Without dead ends: 8419 [2021-03-10 22:18:53,152 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1173.3ms TimeCoverageRelationStatistics Valid=328, Invalid=3212, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 22:18:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8419 states. [2021-03-10 22:18:53,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8419 to 5374. [2021-03-10 22:18:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5374 states, 5373 states have (on average 3.5175879396984926) internal successors, (18900), 5373 states have internal predecessors, (18900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:53,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 18900 transitions. [2021-03-10 22:18:53,257 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 18900 transitions. Word has length 47 [2021-03-10 22:18:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:53,257 INFO L480 AbstractCegarLoop]: Abstraction has 5374 states and 18900 transitions. [2021-03-10 22:18:53,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 18900 transitions. [2021-03-10 22:18:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:53,265 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:53,265 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:53,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-10 22:18:53,265 INFO L428 AbstractCegarLoop]: === Iteration 12 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:53,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:53,265 INFO L82 PathProgramCache]: Analyzing trace with hash 728726234, now seen corresponding path program 12 times [2021-03-10 22:18:53,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:53,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026772580] [2021-03-10 22:18:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:53,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026772580] [2021-03-10 22:18:53,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:53,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:18:53,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140905757] [2021-03-10 22:18:53,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:53,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:53,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:53,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:53,540 INFO L87 Difference]: Start difference. First operand 5374 states and 18900 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:54,706 INFO L93 Difference]: Finished difference Result 5781 states and 20210 transitions. [2021-03-10 22:18:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:18:54,707 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:54,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:54,716 INFO L225 Difference]: With dead ends: 5781 [2021-03-10 22:18:54,716 INFO L226 Difference]: Without dead ends: 5654 [2021-03-10 22:18:54,717 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 721.1ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:18:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-03-10 22:18:54,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5386. [2021-03-10 22:18:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 3.5153203342618387) internal successors, (18930), 5385 states have internal predecessors, (18930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18930 transitions. [2021-03-10 22:18:54,801 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18930 transitions. Word has length 47 [2021-03-10 22:18:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:54,801 INFO L480 AbstractCegarLoop]: Abstraction has 5386 states and 18930 transitions. [2021-03-10 22:18:54,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18930 transitions. [2021-03-10 22:18:54,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:54,809 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:54,809 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:54,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-10 22:18:54,810 INFO L428 AbstractCegarLoop]: === Iteration 13 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:54,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:54,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1738869802, now seen corresponding path program 13 times [2021-03-10 22:18:54,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:54,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206914112] [2021-03-10 22:18:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:55,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206914112] [2021-03-10 22:18:55,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:55,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:18:55,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290308922] [2021-03-10 22:18:55,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:18:55,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:55,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:18:55,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:18:55,059 INFO L87 Difference]: Start difference. First operand 5386 states and 18930 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:56,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:56,138 INFO L93 Difference]: Finished difference Result 5850 states and 20412 transitions. [2021-03-10 22:18:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:18:56,139 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:56,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:56,148 INFO L225 Difference]: With dead ends: 5850 [2021-03-10 22:18:56,149 INFO L226 Difference]: Without dead ends: 5753 [2021-03-10 22:18:56,149 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 676.8ms TimeCoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:18:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2021-03-10 22:18:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 5392. [2021-03-10 22:18:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 3.5141903171953257) internal successors, (18945), 5391 states have internal predecessors, (18945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18945 transitions. [2021-03-10 22:18:56,238 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18945 transitions. Word has length 47 [2021-03-10 22:18:56,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:56,238 INFO L480 AbstractCegarLoop]: Abstraction has 5392 states and 18945 transitions. [2021-03-10 22:18:56,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18945 transitions. [2021-03-10 22:18:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:56,246 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:56,246 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:56,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-10 22:18:56,246 INFO L428 AbstractCegarLoop]: === Iteration 14 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:56,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1736195976, now seen corresponding path program 14 times [2021-03-10 22:18:56,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:56,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548370916] [2021-03-10 22:18:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:56,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548370916] [2021-03-10 22:18:56,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:56,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:18:56,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555983726] [2021-03-10 22:18:56,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:56,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:56,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:56,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:56,513 INFO L87 Difference]: Start difference. First operand 5392 states and 18945 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:57,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:57,636 INFO L93 Difference]: Finished difference Result 5751 states and 20107 transitions. [2021-03-10 22:18:57,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:18:57,637 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:57,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:57,646 INFO L225 Difference]: With dead ends: 5751 [2021-03-10 22:18:57,646 INFO L226 Difference]: Without dead ends: 5642 [2021-03-10 22:18:57,647 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 712.7ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:18:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-03-10 22:18:57,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5374. [2021-03-10 22:18:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5374 states, 5373 states have (on average 3.5168434766424714) internal successors, (18896), 5373 states have internal predecessors, (18896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 18896 transitions. [2021-03-10 22:18:57,722 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 18896 transitions. Word has length 47 [2021-03-10 22:18:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:57,722 INFO L480 AbstractCegarLoop]: Abstraction has 5374 states and 18896 transitions. [2021-03-10 22:18:57,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:57,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 18896 transitions. [2021-03-10 22:18:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:57,729 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:57,730 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:57,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-10 22:18:57,730 INFO L428 AbstractCegarLoop]: === Iteration 15 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:57,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1817793914, now seen corresponding path program 15 times [2021-03-10 22:18:57,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:57,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456831353] [2021-03-10 22:18:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:58,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456831353] [2021-03-10 22:18:58,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:58,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:18:58,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728378317] [2021-03-10 22:18:58,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:58,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:58,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:58,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:58,003 INFO L87 Difference]: Start difference. First operand 5374 states and 18896 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:59,279 INFO L93 Difference]: Finished difference Result 5967 states and 20772 transitions. [2021-03-10 22:18:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 22:18:59,279 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:18:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:59,289 INFO L225 Difference]: With dead ends: 5967 [2021-03-10 22:18:59,289 INFO L226 Difference]: Without dead ends: 5846 [2021-03-10 22:18:59,290 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 870.9ms TimeCoverageRelationStatistics Valid=223, Invalid=2227, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 22:18:59,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2021-03-10 22:18:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 5380. [2021-03-10 22:18:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5380 states, 5379 states have (on average 3.5153374233128836) internal successors, (18909), 5379 states have internal predecessors, (18909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 18909 transitions. [2021-03-10 22:18:59,367 INFO L78 Accepts]: Start accepts. Automaton has 5380 states and 18909 transitions. Word has length 47 [2021-03-10 22:18:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:59,367 INFO L480 AbstractCegarLoop]: Abstraction has 5380 states and 18909 transitions. [2021-03-10 22:18:59,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5380 states and 18909 transitions. [2021-03-10 22:18:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:18:59,373 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:59,374 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:59,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-10 22:18:59,374 INFO L428 AbstractCegarLoop]: === Iteration 16 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:18:59,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:59,374 INFO L82 PathProgramCache]: Analyzing trace with hash -905751946, now seen corresponding path program 16 times [2021-03-10 22:18:59,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:59,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983553486] [2021-03-10 22:18:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:59,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983553486] [2021-03-10 22:18:59,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:59,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:18:59,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786583323] [2021-03-10 22:18:59,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:18:59,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:59,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:18:59,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:18:59,629 INFO L87 Difference]: Start difference. First operand 5380 states and 18909 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:01,189 INFO L93 Difference]: Finished difference Result 6544 states and 22781 transitions. [2021-03-10 22:19:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 22:19:01,189 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:01,200 INFO L225 Difference]: With dead ends: 6544 [2021-03-10 22:19:01,200 INFO L226 Difference]: Without dead ends: 6449 [2021-03-10 22:19:01,201 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 971.6ms TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 22:19:01,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2021-03-10 22:19:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 5382. [2021-03-10 22:19:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.5149600446013753) internal successors, (18914), 5381 states have internal predecessors, (18914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18914 transitions. [2021-03-10 22:19:01,287 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18914 transitions. Word has length 47 [2021-03-10 22:19:01,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:01,288 INFO L480 AbstractCegarLoop]: Abstraction has 5382 states and 18914 transitions. [2021-03-10 22:19:01,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18914 transitions. [2021-03-10 22:19:01,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:01,295 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:01,295 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:01,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-10 22:19:01,296 INFO L428 AbstractCegarLoop]: === Iteration 17 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:01,296 INFO L82 PathProgramCache]: Analyzing trace with hash -606860268, now seen corresponding path program 17 times [2021-03-10 22:19:01,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:01,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384086085] [2021-03-10 22:19:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:01,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384086085] [2021-03-10 22:19:01,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:01,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:19:01,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375670245] [2021-03-10 22:19:01,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:19:01,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:01,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:19:01,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:19:01,534 INFO L87 Difference]: Start difference. First operand 5382 states and 18914 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:02,657 INFO L93 Difference]: Finished difference Result 5846 states and 20396 transitions. [2021-03-10 22:19:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:19:02,657 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:02,667 INFO L225 Difference]: With dead ends: 5846 [2021-03-10 22:19:02,667 INFO L226 Difference]: Without dead ends: 5749 [2021-03-10 22:19:02,667 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 710.6ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:19:02,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2021-03-10 22:19:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 5388. [2021-03-10 22:19:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 5387 states have (on average 3.5138295897531093) internal successors, (18929), 5387 states have internal predecessors, (18929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 18929 transitions. [2021-03-10 22:19:02,743 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 18929 transitions. Word has length 47 [2021-03-10 22:19:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:02,743 INFO L480 AbstractCegarLoop]: Abstraction has 5388 states and 18929 transitions. [2021-03-10 22:19:02,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 18929 transitions. [2021-03-10 22:19:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:02,749 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:02,749 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:02,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-10 22:19:02,749 INFO L428 AbstractCegarLoop]: === Iteration 18 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:02,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1962686518, now seen corresponding path program 18 times [2021-03-10 22:19:02,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:02,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361956302] [2021-03-10 22:19:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:02,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361956302] [2021-03-10 22:19:02,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:02,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:02,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588838991] [2021-03-10 22:19:02,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:02,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:02,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:02,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:02,986 INFO L87 Difference]: Start difference. First operand 5388 states and 18929 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:04,180 INFO L93 Difference]: Finished difference Result 5747 states and 20091 transitions. [2021-03-10 22:19:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:19:04,181 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:04,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:04,190 INFO L225 Difference]: With dead ends: 5747 [2021-03-10 22:19:04,190 INFO L226 Difference]: Without dead ends: 5644 [2021-03-10 22:19:04,190 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 747.3ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:19:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2021-03-10 22:19:04,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5376. [2021-03-10 22:19:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5375 states have (on average 3.5164651162790697) internal successors, (18901), 5375 states have internal predecessors, (18901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18901 transitions. [2021-03-10 22:19:04,263 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18901 transitions. Word has length 47 [2021-03-10 22:19:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:04,263 INFO L480 AbstractCegarLoop]: Abstraction has 5376 states and 18901 transitions. [2021-03-10 22:19:04,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18901 transitions. [2021-03-10 22:19:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:04,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:04,270 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:04,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-10 22:19:04,270 INFO L428 AbstractCegarLoop]: === Iteration 19 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:04,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:04,270 INFO L82 PathProgramCache]: Analyzing trace with hash -261669676, now seen corresponding path program 19 times [2021-03-10 22:19:04,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:04,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903846761] [2021-03-10 22:19:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:04,501 INFO 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 22:19:04,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903846761] [2021-03-10 22:19:04,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:04,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:19:04,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262588252] [2021-03-10 22:19:04,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:19:04,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:19:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:19:04,503 INFO L87 Difference]: Start difference. First operand 5376 states and 18901 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:05,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:05,580 INFO L93 Difference]: Finished difference Result 5823 states and 20345 transitions. [2021-03-10 22:19:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 22:19:05,580 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:05,590 INFO L225 Difference]: With dead ends: 5823 [2021-03-10 22:19:05,590 INFO L226 Difference]: Without dead ends: 5686 [2021-03-10 22:19:05,590 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 704.3ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 22:19:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-03-10 22:19:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5418. [2021-03-10 22:19:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 3.5085840871330993) internal successors, (19006), 5417 states have internal predecessors, (19006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 19006 transitions. [2021-03-10 22:19:05,667 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 19006 transitions. Word has length 47 [2021-03-10 22:19:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:05,667 INFO L480 AbstractCegarLoop]: Abstraction has 5418 states and 19006 transitions. [2021-03-10 22:19:05,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 19006 transitions. [2021-03-10 22:19:05,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:05,674 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:05,674 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:05,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-10 22:19:05,674 INFO L428 AbstractCegarLoop]: === Iteration 20 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:05,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1070610284, now seen corresponding path program 20 times [2021-03-10 22:19:05,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:05,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580615812] [2021-03-10 22:19:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:05,941 INFO 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 22:19:05,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580615812] [2021-03-10 22:19:05,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:05,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:05,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055015125] [2021-03-10 22:19:05,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:05,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:05,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:05,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:05,942 INFO L87 Difference]: Start difference. First operand 5418 states and 19006 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:07,134 INFO L93 Difference]: Finished difference Result 5807 states and 20277 transitions. [2021-03-10 22:19:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:19:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:07,144 INFO L225 Difference]: With dead ends: 5807 [2021-03-10 22:19:07,144 INFO L226 Difference]: Without dead ends: 5662 [2021-03-10 22:19:07,144 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 774.6ms TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 22:19:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2021-03-10 22:19:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 5394. [2021-03-10 22:19:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 3.5119599480808454) internal successors, (18940), 5393 states have internal predecessors, (18940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18940 transitions. [2021-03-10 22:19:07,217 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18940 transitions. Word has length 47 [2021-03-10 22:19:07,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:07,218 INFO L480 AbstractCegarLoop]: Abstraction has 5394 states and 18940 transitions. [2021-03-10 22:19:07,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18940 transitions. [2021-03-10 22:19:07,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:07,225 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:07,225 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:07,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-10 22:19:07,225 INFO L428 AbstractCegarLoop]: === Iteration 21 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:07,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:07,225 INFO L82 PathProgramCache]: Analyzing trace with hash -170714506, now seen corresponding path program 21 times [2021-03-10 22:19:07,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:07,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874211995] [2021-03-10 22:19:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:07,470 INFO 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 22:19:07,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874211995] [2021-03-10 22:19:07,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:07,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:07,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189235536] [2021-03-10 22:19:07,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:07,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:07,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:07,471 INFO L87 Difference]: Start difference. First operand 5394 states and 18940 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:11,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:11,039 INFO L93 Difference]: Finished difference Result 10437 states and 36983 transitions. [2021-03-10 22:19:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-03-10 22:19:11,040 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:11,057 INFO L225 Difference]: With dead ends: 10437 [2021-03-10 22:19:11,057 INFO L226 Difference]: Without dead ends: 10163 [2021-03-10 22:19:11,059 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 2194.3ms TimeCoverageRelationStatistics Valid=673, Invalid=6809, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 22:19:11,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2021-03-10 22:19:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 6026. [2021-03-10 22:19:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 6025 states have (on average 3.5100414937759337) internal successors, (21148), 6025 states have internal predecessors, (21148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 21148 transitions. [2021-03-10 22:19:11,165 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 21148 transitions. Word has length 47 [2021-03-10 22:19:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:11,166 INFO L480 AbstractCegarLoop]: Abstraction has 6026 states and 21148 transitions. [2021-03-10 22:19:11,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 21148 transitions. [2021-03-10 22:19:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:11,173 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:11,173 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:11,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-10 22:19:11,173 INFO L428 AbstractCegarLoop]: === Iteration 22 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:11,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:11,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1021366414, now seen corresponding path program 22 times [2021-03-10 22:19:11,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:11,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791071036] [2021-03-10 22:19:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:11,430 INFO 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 22:19:11,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791071036] [2021-03-10 22:19:11,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:11,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:11,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844615981] [2021-03-10 22:19:11,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:11,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:11,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:11,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:11,431 INFO L87 Difference]: Start difference. First operand 6026 states and 21148 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:14,945 INFO L93 Difference]: Finished difference Result 10391 states and 37054 transitions. [2021-03-10 22:19:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-03-10 22:19:14,946 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:14,963 INFO L225 Difference]: With dead ends: 10391 [2021-03-10 22:19:14,963 INFO L226 Difference]: Without dead ends: 10284 [2021-03-10 22:19:14,964 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 2124.2ms TimeCoverageRelationStatistics Valid=623, Invalid=6349, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 22:19:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10284 states. [2021-03-10 22:19:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10284 to 5934. [2021-03-10 22:19:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5934 states, 5933 states have (on average 3.5155907635260406) internal successors, (20858), 5933 states have internal predecessors, (20858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5934 states to 5934 states and 20858 transitions. [2021-03-10 22:19:15,061 INFO L78 Accepts]: Start accepts. Automaton has 5934 states and 20858 transitions. Word has length 47 [2021-03-10 22:19:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:15,061 INFO L480 AbstractCegarLoop]: Abstraction has 5934 states and 20858 transitions. [2021-03-10 22:19:15,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5934 states and 20858 transitions. [2021-03-10 22:19:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:15,068 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:15,068 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:15,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-10 22:19:15,068 INFO L428 AbstractCegarLoop]: === Iteration 23 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:15,068 INFO L82 PathProgramCache]: Analyzing trace with hash 659235032, now seen corresponding path program 23 times [2021-03-10 22:19:15,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:15,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099406576] [2021-03-10 22:19:15,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:15,298 INFO 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 22:19:15,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099406576] [2021-03-10 22:19:15,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:15,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:15,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609512119] [2021-03-10 22:19:15,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:15,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:15,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:15,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:15,299 INFO L87 Difference]: Start difference. First operand 5934 states and 20858 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:16,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:16,648 INFO L93 Difference]: Finished difference Result 6577 states and 22905 transitions. [2021-03-10 22:19:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 22:19:16,649 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:16,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:16,660 INFO L225 Difference]: With dead ends: 6577 [2021-03-10 22:19:16,660 INFO L226 Difference]: Without dead ends: 6456 [2021-03-10 22:19:16,660 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 882.2ms TimeCoverageRelationStatistics Valid=220, Invalid=2230, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 22:19:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2021-03-10 22:19:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 5940. [2021-03-10 22:19:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.514227984509177) internal successors, (20871), 5939 states have internal predecessors, (20871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20871 transitions. [2021-03-10 22:19:16,749 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20871 transitions. Word has length 47 [2021-03-10 22:19:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:16,749 INFO L480 AbstractCegarLoop]: Abstraction has 5940 states and 20871 transitions. [2021-03-10 22:19:16,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20871 transitions. [2021-03-10 22:19:16,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:16,756 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:16,756 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:16,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-10 22:19:16,757 INFO L428 AbstractCegarLoop]: === Iteration 24 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:16,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:16,757 INFO L82 PathProgramCache]: Analyzing trace with hash -2064310828, now seen corresponding path program 24 times [2021-03-10 22:19:16,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:16,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735623348] [2021-03-10 22:19:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:17,008 INFO 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 22:19:17,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735623348] [2021-03-10 22:19:17,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:17,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:17,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32881595] [2021-03-10 22:19:17,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:17,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:17,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:17,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:17,009 INFO L87 Difference]: Start difference. First operand 5940 states and 20871 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:18,677 INFO L93 Difference]: Finished difference Result 7065 states and 24685 transitions. [2021-03-10 22:19:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 22:19:18,678 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:18,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:18,689 INFO L225 Difference]: With dead ends: 7065 [2021-03-10 22:19:18,689 INFO L226 Difference]: Without dead ends: 6821 [2021-03-10 22:19:18,690 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1055.0ms TimeCoverageRelationStatistics Valid=252, Invalid=2610, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 22:19:18,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2021-03-10 22:19:18,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5936. [2021-03-10 22:19:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 3.5149115417017693) internal successors, (20861), 5935 states have internal predecessors, (20861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20861 transitions. [2021-03-10 22:19:18,770 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20861 transitions. Word has length 47 [2021-03-10 22:19:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:18,770 INFO L480 AbstractCegarLoop]: Abstraction has 5936 states and 20861 transitions. [2021-03-10 22:19:18,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:18,771 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20861 transitions. [2021-03-10 22:19:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:18,777 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:18,778 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:18,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-10 22:19:18,778 INFO L428 AbstractCegarLoop]: === Iteration 25 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1765419150, now seen corresponding path program 25 times [2021-03-10 22:19:18,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:18,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498964380] [2021-03-10 22:19:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:19,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498964380] [2021-03-10 22:19:19,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:19,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:19:19,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859098397] [2021-03-10 22:19:19,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:19:19,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:19,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:19:19,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:19:19,003 INFO L87 Difference]: Start difference. First operand 5936 states and 20861 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:20,176 INFO L93 Difference]: Finished difference Result 6458 states and 22526 transitions. [2021-03-10 22:19:20,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:19:20,177 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:20,188 INFO L225 Difference]: With dead ends: 6458 [2021-03-10 22:19:20,188 INFO L226 Difference]: Without dead ends: 6361 [2021-03-10 22:19:20,188 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 737.0ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:19:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2021-03-10 22:19:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 5950. [2021-03-10 22:19:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5950 states, 5949 states have (on average 3.5111783493024036) internal successors, (20888), 5949 states have internal predecessors, (20888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 20888 transitions. [2021-03-10 22:19:20,275 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 20888 transitions. Word has length 47 [2021-03-10 22:19:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:20,275 INFO L480 AbstractCegarLoop]: Abstraction has 5950 states and 20888 transitions. [2021-03-10 22:19:20,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 20888 transitions. [2021-03-10 22:19:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:20,282 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:20,282 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:20,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-10 22:19:20,282 INFO L428 AbstractCegarLoop]: === Iteration 26 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:20,282 INFO L82 PathProgramCache]: Analyzing trace with hash 804127636, now seen corresponding path program 26 times [2021-03-10 22:19:20,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:20,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412408007] [2021-03-10 22:19:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:20,530 INFO 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 22:19:20,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412408007] [2021-03-10 22:19:20,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:20,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:20,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103480619] [2021-03-10 22:19:20,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:20,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:20,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:20,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:20,531 INFO L87 Difference]: Start difference. First operand 5950 states and 20888 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:21,784 INFO L93 Difference]: Finished difference Result 6359 states and 22221 transitions. [2021-03-10 22:19:21,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:19:21,784 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:21,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:21,796 INFO L225 Difference]: With dead ends: 6359 [2021-03-10 22:19:21,796 INFO L226 Difference]: Without dead ends: 6242 [2021-03-10 22:19:21,797 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 777.2ms TimeCoverageRelationStatistics Valid=186, Invalid=1884, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 22:19:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2021-03-10 22:19:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 5924. [2021-03-10 22:19:21,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5924 states, 5923 states have (on average 3.515617085936181) internal successors, (20823), 5923 states have internal predecessors, (20823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 20823 transitions. [2021-03-10 22:19:21,880 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 20823 transitions. Word has length 47 [2021-03-10 22:19:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:21,880 INFO L480 AbstractCegarLoop]: Abstraction has 5924 states and 20823 transitions. [2021-03-10 22:19:21,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 20823 transitions. [2021-03-10 22:19:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:21,887 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:21,887 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, 1] [2021-03-10 22:19:21,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-10 22:19:21,888 INFO L428 AbstractCegarLoop]: === Iteration 27 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:21,888 INFO L82 PathProgramCache]: Analyzing trace with hash -234197158, now seen corresponding path program 27 times [2021-03-10 22:19:21,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:21,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083408489] [2021-03-10 22:19:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:22,142 INFO 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 22:19:22,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083408489] [2021-03-10 22:19:22,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:22,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:22,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259978478] [2021-03-10 22:19:22,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:22,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:22,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:22,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:22,143 INFO L87 Difference]: Start difference. First operand 5924 states and 20823 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:23,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:23,407 INFO L93 Difference]: Finished difference Result 6593 states and 23082 transitions. [2021-03-10 22:19:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 22:19:23,407 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:23,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:23,418 INFO L225 Difference]: With dead ends: 6593 [2021-03-10 22:19:23,418 INFO L226 Difference]: Without dead ends: 6466 [2021-03-10 22:19:23,419 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 811.1ms TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 22:19:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6466 states. [2021-03-10 22:19:23,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6466 to 5944. [2021-03-10 22:19:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 5943 states have (on average 3.513545347467609) internal successors, (20881), 5943 states have internal predecessors, (20881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20881 transitions. [2021-03-10 22:19:23,500 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20881 transitions. Word has length 47 [2021-03-10 22:19:23,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:23,500 INFO L480 AbstractCegarLoop]: Abstraction has 5944 states and 20881 transitions. [2021-03-10 22:19:23,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:23,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20881 transitions. [2021-03-10 22:19:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:23,507 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:23,507 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:23,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-10 22:19:23,508 INFO L428 AbstractCegarLoop]: === Iteration 28 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:23,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1017451496, now seen corresponding path program 28 times [2021-03-10 22:19:23,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:23,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189933667] [2021-03-10 22:19:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:23,748 INFO 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 22:19:23,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189933667] [2021-03-10 22:19:23,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:23,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:23,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879018225] [2021-03-10 22:19:23,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:23,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:23,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:23,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:23,749 INFO L87 Difference]: Start difference. First operand 5944 states and 20881 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:25,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:25,797 INFO L93 Difference]: Finished difference Result 9238 states and 32604 transitions. [2021-03-10 22:19:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 22:19:25,798 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:25,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:25,814 INFO L225 Difference]: With dead ends: 9238 [2021-03-10 22:19:25,814 INFO L226 Difference]: Without dead ends: 9149 [2021-03-10 22:19:25,814 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1199.9ms TimeCoverageRelationStatistics Valid=327, Invalid=3213, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 22:19:25,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2021-03-10 22:19:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 5968. [2021-03-10 22:19:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5968 states, 5967 states have (on average 3.5118149824032177) internal successors, (20955), 5967 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:25,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5968 states to 5968 states and 20955 transitions. [2021-03-10 22:19:25,913 INFO L78 Accepts]: Start accepts. Automaton has 5968 states and 20955 transitions. Word has length 47 [2021-03-10 22:19:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:25,913 INFO L480 AbstractCegarLoop]: Abstraction has 5968 states and 20955 transitions. [2021-03-10 22:19:25,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:25,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5968 states and 20955 transitions. [2021-03-10 22:19:25,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:25,920 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:25,920 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:25,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-10 22:19:25,920 INFO L428 AbstractCegarLoop]: === Iteration 29 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:25,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:25,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1868103404, now seen corresponding path program 29 times [2021-03-10 22:19:25,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:25,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113473843] [2021-03-10 22:19:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:26,181 INFO 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 22:19:26,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113473843] [2021-03-10 22:19:26,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:26,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:26,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604412759] [2021-03-10 22:19:26,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:26,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:26,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:26,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:26,182 INFO L87 Difference]: Start difference. First operand 5968 states and 20955 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:28,302 INFO L93 Difference]: Finished difference Result 9722 states and 34560 transitions. [2021-03-10 22:19:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 22:19:28,302 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:28,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:28,319 INFO L225 Difference]: With dead ends: 9722 [2021-03-10 22:19:28,319 INFO L226 Difference]: Without dead ends: 9619 [2021-03-10 22:19:28,320 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1228.8ms TimeCoverageRelationStatistics Valid=332, Invalid=3450, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 22:19:28,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2021-03-10 22:19:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 5948. [2021-03-10 22:19:28,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.5148814528333614) internal successors, (20903), 5947 states have internal predecessors, (20903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20903 transitions. [2021-03-10 22:19:28,419 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20903 transitions. Word has length 47 [2021-03-10 22:19:28,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:28,419 INFO L480 AbstractCegarLoop]: Abstraction has 5948 states and 20903 transitions. [2021-03-10 22:19:28,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20903 transitions. [2021-03-10 22:19:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:28,426 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:28,426 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:28,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-10 22:19:28,426 INFO L428 AbstractCegarLoop]: === Iteration 30 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:28,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:28,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1307726200, now seen corresponding path program 30 times [2021-03-10 22:19:28,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:28,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825193643] [2021-03-10 22:19:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:28,680 INFO 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 22:19:28,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825193643] [2021-03-10 22:19:28,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:28,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:28,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189634275] [2021-03-10 22:19:28,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:28,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:28,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:28,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:28,681 INFO L87 Difference]: Start difference. First operand 5948 states and 20903 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:29,887 INFO L93 Difference]: Finished difference Result 6447 states and 22511 transitions. [2021-03-10 22:19:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 22:19:29,887 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:29,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:29,899 INFO L225 Difference]: With dead ends: 6447 [2021-03-10 22:19:29,899 INFO L226 Difference]: Without dead ends: 6320 [2021-03-10 22:19:29,899 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 786.7ms TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 22:19:29,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-03-10 22:19:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 5960. [2021-03-10 22:19:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5960 states, 5959 states have (on average 3.512837724450411) internal successors, (20933), 5959 states have internal predecessors, (20933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 20933 transitions. [2021-03-10 22:19:29,980 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 20933 transitions. Word has length 47 [2021-03-10 22:19:29,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:29,980 INFO L480 AbstractCegarLoop]: Abstraction has 5960 states and 20933 transitions. [2021-03-10 22:19:29,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 20933 transitions. [2021-03-10 22:19:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:29,987 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:29,987 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:29,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-10 22:19:29,987 INFO L428 AbstractCegarLoop]: === Iteration 31 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:29,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:29,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1159869836, now seen corresponding path program 31 times [2021-03-10 22:19:29,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:29,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402950977] [2021-03-10 22:19:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:30,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402950977] [2021-03-10 22:19:30,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:30,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:30,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173821272] [2021-03-10 22:19:30,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:30,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:30,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:30,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:30,245 INFO L87 Difference]: Start difference. First operand 5960 states and 20933 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:31,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:31,659 INFO L93 Difference]: Finished difference Result 6520 states and 22721 transitions. [2021-03-10 22:19:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 22:19:31,660 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:31,671 INFO L225 Difference]: With dead ends: 6520 [2021-03-10 22:19:31,671 INFO L226 Difference]: Without dead ends: 6423 [2021-03-10 22:19:31,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 945.2ms TimeCoverageRelationStatistics Valid=226, Invalid=2324, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 22:19:31,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2021-03-10 22:19:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 5966. [2021-03-10 22:19:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 5965 states have (on average 3.511818943839061) internal successors, (20948), 5965 states have internal predecessors, (20948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 20948 transitions. [2021-03-10 22:19:31,753 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 20948 transitions. Word has length 47 [2021-03-10 22:19:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:31,754 INFO L480 AbstractCegarLoop]: Abstraction has 5966 states and 20948 transitions. [2021-03-10 22:19:31,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:31,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 20948 transitions. [2021-03-10 22:19:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:31,761 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:31,761 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:31,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-10 22:19:31,762 INFO L428 AbstractCegarLoop]: === Iteration 32 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:31,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:31,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1157196010, now seen corresponding path program 32 times [2021-03-10 22:19:31,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:31,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775009521] [2021-03-10 22:19:31,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:32,024 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 22:19:32,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775009521] [2021-03-10 22:19:32,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:32,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:32,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347231107] [2021-03-10 22:19:32,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:32,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:32,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:32,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:32,025 INFO L87 Difference]: Start difference. First operand 5966 states and 20948 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:33,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:33,275 INFO L93 Difference]: Finished difference Result 6417 states and 22408 transitions. [2021-03-10 22:19:33,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 22:19:33,275 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:33,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:33,286 INFO L225 Difference]: With dead ends: 6417 [2021-03-10 22:19:33,286 INFO L226 Difference]: Without dead ends: 6308 [2021-03-10 22:19:33,287 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 821.2ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 22:19:33,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2021-03-10 22:19:33,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5948. [2021-03-10 22:19:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.514208844795695) internal successors, (20899), 5947 states have internal predecessors, (20899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:33,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20899 transitions. [2021-03-10 22:19:33,369 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20899 transitions. Word has length 47 [2021-03-10 22:19:33,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:33,369 INFO L480 AbstractCegarLoop]: Abstraction has 5948 states and 20899 transitions. [2021-03-10 22:19:33,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:33,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20899 transitions. [2021-03-10 22:19:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:33,376 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:33,376 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:33,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-10 22:19:33,376 INFO L428 AbstractCegarLoop]: === Iteration 33 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:33,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:33,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1898173416, now seen corresponding path program 33 times [2021-03-10 22:19:33,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:33,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435876918] [2021-03-10 22:19:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:33,634 INFO 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 22:19:33,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435876918] [2021-03-10 22:19:33,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:33,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:33,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596182070] [2021-03-10 22:19:33,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:33,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:33,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:33,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:33,635 INFO L87 Difference]: Start difference. First operand 5948 states and 20899 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:35,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:35,003 INFO L93 Difference]: Finished difference Result 6609 states and 22999 transitions. [2021-03-10 22:19:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 22:19:35,003 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:35,014 INFO L225 Difference]: With dead ends: 6609 [2021-03-10 22:19:35,014 INFO L226 Difference]: Without dead ends: 6488 [2021-03-10 22:19:35,014 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 929.2ms TimeCoverageRelationStatistics Valid=242, Invalid=2514, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 22:19:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2021-03-10 22:19:35,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5954. [2021-03-10 22:19:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5954 states, 5953 states have (on average 3.5128506635309926) internal successors, (20912), 5953 states have internal predecessors, (20912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5954 states to 5954 states and 20912 transitions. [2021-03-10 22:19:35,119 INFO L78 Accepts]: Start accepts. Automaton has 5954 states and 20912 transitions. Word has length 47 [2021-03-10 22:19:35,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:35,119 INFO L480 AbstractCegarLoop]: Abstraction has 5954 states and 20912 transitions. [2021-03-10 22:19:35,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5954 states and 20912 transitions. [2021-03-10 22:19:35,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:35,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:35,126 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:35,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-10 22:19:35,126 INFO L428 AbstractCegarLoop]: === Iteration 34 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:35,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:35,127 INFO L82 PathProgramCache]: Analyzing trace with hash -326751980, now seen corresponding path program 34 times [2021-03-10 22:19:35,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:35,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521049773] [2021-03-10 22:19:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:35,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521049773] [2021-03-10 22:19:35,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:35,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:35,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159997005] [2021-03-10 22:19:35,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:35,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:35,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:35,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:35,385 INFO L87 Difference]: Start difference. First operand 5954 states and 20912 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:37,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:37,296 INFO L93 Difference]: Finished difference Result 7878 states and 27548 transitions. [2021-03-10 22:19:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 22:19:37,297 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:37,309 INFO L225 Difference]: With dead ends: 7878 [2021-03-10 22:19:37,310 INFO L226 Difference]: Without dead ends: 7783 [2021-03-10 22:19:37,310 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1117.8ms TimeCoverageRelationStatistics Valid=293, Invalid=3129, Unknown=0, NotChecked=0, Total=3422 [2021-03-10 22:19:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2021-03-10 22:19:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 5944. [2021-03-10 22:19:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 5943 states have (on average 3.5142184082113412) internal successors, (20885), 5943 states have internal predecessors, (20885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20885 transitions. [2021-03-10 22:19:37,402 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20885 transitions. Word has length 47 [2021-03-10 22:19:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:37,402 INFO L480 AbstractCegarLoop]: Abstraction has 5944 states and 20885 transitions. [2021-03-10 22:19:37,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20885 transitions. [2021-03-10 22:19:37,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:37,409 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:37,409 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:37,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-10 22:19:37,409 INFO L428 AbstractCegarLoop]: === Iteration 35 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:37,409 INFO L82 PathProgramCache]: Analyzing trace with hash -27860302, now seen corresponding path program 35 times [2021-03-10 22:19:37,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:37,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216143714] [2021-03-10 22:19:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:37,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216143714] [2021-03-10 22:19:37,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:37,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:37,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242550621] [2021-03-10 22:19:37,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:37,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:37,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:37,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:37,675 INFO L87 Difference]: Start difference. First operand 5944 states and 20885 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:39,148 INFO L93 Difference]: Finished difference Result 6605 states and 22975 transitions. [2021-03-10 22:19:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 22:19:39,148 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:39,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:39,160 INFO L225 Difference]: With dead ends: 6605 [2021-03-10 22:19:39,160 INFO L226 Difference]: Without dead ends: 6508 [2021-03-10 22:19:39,160 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 988.3ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 22:19:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-03-10 22:19:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 5952. [2021-03-10 22:19:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5951 states have (on average 3.5125189043858174) internal successors, (20903), 5951 states have internal predecessors, (20903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20903 transitions. [2021-03-10 22:19:39,283 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20903 transitions. Word has length 47 [2021-03-10 22:19:39,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:39,283 INFO L480 AbstractCegarLoop]: Abstraction has 5952 states and 20903 transitions. [2021-03-10 22:19:39,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20903 transitions. [2021-03-10 22:19:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:39,290 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:39,290 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:39,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-10 22:19:39,290 INFO L428 AbstractCegarLoop]: === Iteration 36 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:39,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:39,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1753280812, now seen corresponding path program 36 times [2021-03-10 22:19:39,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:39,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018624156] [2021-03-10 22:19:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:39,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018624156] [2021-03-10 22:19:39,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:39,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:39,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506288135] [2021-03-10 22:19:39,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:39,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:39,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:39,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:39,542 INFO L87 Difference]: Start difference. First operand 5952 states and 20903 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:40,847 INFO L93 Difference]: Finished difference Result 6502 states and 22662 transitions. [2021-03-10 22:19:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 22:19:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:40,858 INFO L225 Difference]: With dead ends: 6502 [2021-03-10 22:19:40,858 INFO L226 Difference]: Without dead ends: 6399 [2021-03-10 22:19:40,859 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 836.3ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 22:19:40,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2021-03-10 22:19:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5940. [2021-03-10 22:19:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.5149014985687828) internal successors, (20875), 5939 states have internal predecessors, (20875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20875 transitions. [2021-03-10 22:19:40,941 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20875 transitions. Word has length 47 [2021-03-10 22:19:40,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:40,941 INFO L480 AbstractCegarLoop]: Abstraction has 5940 states and 20875 transitions. [2021-03-10 22:19:40,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:40,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20875 transitions. [2021-03-10 22:19:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:40,948 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:40,948 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:40,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-10 22:19:40,948 INFO L428 AbstractCegarLoop]: === Iteration 37 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:40,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:40,948 INFO L82 PathProgramCache]: Analyzing trace with hash 392123308, now seen corresponding path program 37 times [2021-03-10 22:19:40,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:40,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489127456] [2021-03-10 22:19:40,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:41,222 INFO 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 22:19:41,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489127456] [2021-03-10 22:19:41,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:41,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:41,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242905066] [2021-03-10 22:19:41,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:41,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:41,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:41,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:41,223 INFO L87 Difference]: Start difference. First operand 5940 states and 20875 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:42,417 INFO L93 Difference]: Finished difference Result 6361 states and 22242 transitions. [2021-03-10 22:19:42,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 22:19:42,417 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:42,428 INFO L225 Difference]: With dead ends: 6361 [2021-03-10 22:19:42,428 INFO L226 Difference]: Without dead ends: 6234 [2021-03-10 22:19:42,428 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 746.6ms TimeCoverageRelationStatistics Valid=175, Invalid=1717, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:19:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-03-10 22:19:42,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 5976. [2021-03-10 22:19:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5976 states, 5975 states have (on average 3.5128033472803346) internal successors, (20989), 5975 states have internal predecessors, (20989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 20989 transitions. [2021-03-10 22:19:42,512 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 20989 transitions. Word has length 47 [2021-03-10 22:19:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:42,512 INFO L480 AbstractCegarLoop]: Abstraction has 5976 states and 20989 transitions. [2021-03-10 22:19:42,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:42,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 20989 transitions. [2021-03-10 22:19:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:42,519 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:42,519 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:42,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-10 22:19:42,519 INFO L428 AbstractCegarLoop]: === Iteration 38 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:42,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:42,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2075472728, now seen corresponding path program 38 times [2021-03-10 22:19:42,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:42,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709660338] [2021-03-10 22:19:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:42,794 INFO 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 22:19:42,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709660338] [2021-03-10 22:19:42,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:42,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:42,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309039197] [2021-03-10 22:19:42,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:42,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:42,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:42,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:42,795 INFO L87 Difference]: Start difference. First operand 5976 states and 20989 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:44,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:44,106 INFO L93 Difference]: Finished difference Result 6440 states and 22471 transitions. [2021-03-10 22:19:44,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 22:19:44,106 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:44,117 INFO L225 Difference]: With dead ends: 6440 [2021-03-10 22:19:44,117 INFO L226 Difference]: Without dead ends: 6343 [2021-03-10 22:19:44,118 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 876.5ms TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 22:19:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2021-03-10 22:19:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 5982. [2021-03-10 22:19:44,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5982 states, 5981 states have (on average 3.5117873265340243) internal successors, (21004), 5981 states have internal predecessors, (21004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 21004 transitions. [2021-03-10 22:19:44,198 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 21004 transitions. Word has length 47 [2021-03-10 22:19:44,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:44,198 INFO L480 AbstractCegarLoop]: Abstraction has 5982 states and 21004 transitions. [2021-03-10 22:19:44,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 21004 transitions. [2021-03-10 22:19:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:44,206 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:44,206 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:44,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-10 22:19:44,206 INFO L428 AbstractCegarLoop]: === Iteration 39 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:44,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:44,206 INFO L82 PathProgramCache]: Analyzing trace with hash -2072798902, now seen corresponding path program 39 times [2021-03-10 22:19:44,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:44,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55299987] [2021-03-10 22:19:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:44,473 INFO 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 22:19:44,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55299987] [2021-03-10 22:19:44,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:44,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:44,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787253222] [2021-03-10 22:19:44,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:44,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:44,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:44,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:44,475 INFO L87 Difference]: Start difference. First operand 5982 states and 21004 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:45,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:45,641 INFO L93 Difference]: Finished difference Result 6331 states and 22139 transitions. [2021-03-10 22:19:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:19:45,641 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:45,652 INFO L225 Difference]: With dead ends: 6331 [2021-03-10 22:19:45,652 INFO L226 Difference]: Without dead ends: 6222 [2021-03-10 22:19:45,652 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 755.5ms TimeCoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:19:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2021-03-10 22:19:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 5964. [2021-03-10 22:19:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5964 states, 5963 states have (on average 3.512829112862653) internal successors, (20947), 5963 states have internal predecessors, (20947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 20947 transitions. [2021-03-10 22:19:45,733 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 20947 transitions. Word has length 47 [2021-03-10 22:19:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:45,733 INFO L480 AbstractCegarLoop]: Abstraction has 5964 states and 20947 transitions. [2021-03-10 22:19:45,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 20947 transitions. [2021-03-10 22:19:45,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:45,740 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:45,740 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:45,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-10 22:19:45,740 INFO L428 AbstractCegarLoop]: === Iteration 40 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:45,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:45,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1973112992, now seen corresponding path program 40 times [2021-03-10 22:19:45,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:45,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631479176] [2021-03-10 22:19:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:46,002 INFO 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 22:19:46,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631479176] [2021-03-10 22:19:46,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:46,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:19:46,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844922246] [2021-03-10 22:19:46,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:19:46,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:46,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:19:46,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:19:46,003 INFO L87 Difference]: Start difference. First operand 5964 states and 20947 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:47,248 INFO L93 Difference]: Finished difference Result 6401 states and 22402 transitions. [2021-03-10 22:19:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:19:47,249 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:47,260 INFO L225 Difference]: With dead ends: 6401 [2021-03-10 22:19:47,260 INFO L226 Difference]: Without dead ends: 6256 [2021-03-10 22:19:47,260 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 800.6ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:19:47,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2021-03-10 22:19:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 5976. [2021-03-10 22:19:47,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5976 states, 5975 states have (on average 3.510794979079498) internal successors, (20977), 5975 states have internal predecessors, (20977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 20977 transitions. [2021-03-10 22:19:47,344 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 20977 transitions. Word has length 47 [2021-03-10 22:19:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:47,345 INFO L480 AbstractCegarLoop]: Abstraction has 5976 states and 20977 transitions. [2021-03-10 22:19:47,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 20977 transitions. [2021-03-10 22:19:47,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:47,353 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:47,353 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:47,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-10 22:19:47,353 INFO L428 AbstractCegarLoop]: === Iteration 41 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:47,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:47,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1255583042, now seen corresponding path program 41 times [2021-03-10 22:19:47,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:47,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082881683] [2021-03-10 22:19:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:47,637 INFO 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 22:19:47,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082881683] [2021-03-10 22:19:47,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:47,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:47,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819550789] [2021-03-10 22:19:47,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:47,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:47,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:47,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:47,638 INFO L87 Difference]: Start difference. First operand 5976 states and 20977 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:48,970 INFO L93 Difference]: Finished difference Result 6422 states and 22406 transitions. [2021-03-10 22:19:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 22:19:48,971 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:48,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:48,982 INFO L225 Difference]: With dead ends: 6422 [2021-03-10 22:19:48,982 INFO L226 Difference]: Without dead ends: 6325 [2021-03-10 22:19:48,983 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 897.7ms TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 22:19:49,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-03-10 22:19:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 5982. [2021-03-10 22:19:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5982 states, 5981 states have (on average 3.5097809730814244) internal successors, (20992), 5981 states have internal predecessors, (20992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 20992 transitions. [2021-03-10 22:19:49,067 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 20992 transitions. Word has length 47 [2021-03-10 22:19:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:49,067 INFO L480 AbstractCegarLoop]: Abstraction has 5982 states and 20992 transitions. [2021-03-10 22:19:49,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 20992 transitions. [2021-03-10 22:19:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:49,074 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:49,074 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:49,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-10 22:19:49,074 INFO L428 AbstractCegarLoop]: === Iteration 42 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:49,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1252909216, now seen corresponding path program 42 times [2021-03-10 22:19:49,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:49,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280259203] [2021-03-10 22:19:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:49,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280259203] [2021-03-10 22:19:49,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:49,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:49,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077686439] [2021-03-10 22:19:49,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:49,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:49,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:49,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:49,332 INFO L87 Difference]: Start difference. First operand 5982 states and 20992 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:50,534 INFO L93 Difference]: Finished difference Result 6307 states and 22053 transitions. [2021-03-10 22:19:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 22:19:50,534 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:50,545 INFO L225 Difference]: With dead ends: 6307 [2021-03-10 22:19:50,546 INFO L226 Difference]: Without dead ends: 6174 [2021-03-10 22:19:50,546 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 762.9ms TimeCoverageRelationStatistics Valid=180, Invalid=1712, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:19:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2021-03-10 22:19:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 5940. [2021-03-10 22:19:50,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.5135544704495705) internal successors, (20867), 5939 states have internal predecessors, (20867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20867 transitions. [2021-03-10 22:19:50,628 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20867 transitions. Word has length 47 [2021-03-10 22:19:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:50,628 INFO L480 AbstractCegarLoop]: Abstraction has 5940 states and 20867 transitions. [2021-03-10 22:19:50,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20867 transitions. [2021-03-10 22:19:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:50,635 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:50,636 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:50,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-10 22:19:50,636 INFO L428 AbstractCegarLoop]: === Iteration 43 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:50,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:50,636 INFO L82 PathProgramCache]: Analyzing trace with hash -439671468, now seen corresponding path program 43 times [2021-03-10 22:19:50,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:50,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004673688] [2021-03-10 22:19:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:50,897 INFO 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 22:19:50,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004673688] [2021-03-10 22:19:50,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:50,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:50,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6163330] [2021-03-10 22:19:50,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:50,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:50,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:50,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:50,898 INFO L87 Difference]: Start difference. First operand 5940 states and 20867 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:52,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:52,320 INFO L93 Difference]: Finished difference Result 6586 states and 23006 transitions. [2021-03-10 22:19:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 22:19:52,321 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:52,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:52,332 INFO L225 Difference]: With dead ends: 6586 [2021-03-10 22:19:52,332 INFO L226 Difference]: Without dead ends: 6401 [2021-03-10 22:19:52,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 954.4ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 22:19:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2021-03-10 22:19:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 5944. [2021-03-10 22:19:52,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 5943 states have (on average 3.512872286723877) internal successors, (20877), 5943 states have internal predecessors, (20877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:52,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20877 transitions. [2021-03-10 22:19:52,413 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20877 transitions. Word has length 47 [2021-03-10 22:19:52,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:52,413 INFO L480 AbstractCegarLoop]: Abstraction has 5944 states and 20877 transitions. [2021-03-10 22:19:52,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:52,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20877 transitions. [2021-03-10 22:19:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:52,421 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:52,421 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:52,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-10 22:19:52,421 INFO L428 AbstractCegarLoop]: === Iteration 44 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:52,422 INFO L82 PathProgramCache]: Analyzing trace with hash -557163210, now seen corresponding path program 44 times [2021-03-10 22:19:52,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:52,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872091900] [2021-03-10 22:19:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:52,681 INFO 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 22:19:52,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872091900] [2021-03-10 22:19:52,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:52,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:52,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840118420] [2021-03-10 22:19:52,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:52,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:52,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:52,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:52,682 INFO L87 Difference]: Start difference. First operand 5944 states and 20877 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:54,118 INFO L93 Difference]: Finished difference Result 6678 states and 23209 transitions. [2021-03-10 22:19:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 22:19:54,118 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:54,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:54,129 INFO L225 Difference]: With dead ends: 6678 [2021-03-10 22:19:54,130 INFO L226 Difference]: Without dead ends: 6541 [2021-03-10 22:19:54,130 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 949.9ms TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 22:19:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2021-03-10 22:19:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 5950. [2021-03-10 22:19:54,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5950 states, 5949 states have (on average 3.511514540258867) internal successors, (20890), 5949 states have internal predecessors, (20890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 20890 transitions. [2021-03-10 22:19:54,212 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 20890 transitions. Word has length 47 [2021-03-10 22:19:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:54,212 INFO L480 AbstractCegarLoop]: Abstraction has 5950 states and 20890 transitions. [2021-03-10 22:19:54,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:54,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 20890 transitions. [2021-03-10 22:19:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:54,220 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:54,220 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:54,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-10 22:19:54,220 INFO L428 AbstractCegarLoop]: === Iteration 45 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:54,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:54,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1014258226, now seen corresponding path program 45 times [2021-03-10 22:19:54,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:54,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076988830] [2021-03-10 22:19:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:54,472 INFO 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 22:19:54,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076988830] [2021-03-10 22:19:54,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:54,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:54,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815963265] [2021-03-10 22:19:54,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:54,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:54,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:54,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:54,473 INFO L87 Difference]: Start difference. First operand 5950 states and 20890 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:57,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:57,241 INFO L93 Difference]: Finished difference Result 9988 states and 35005 transitions. [2021-03-10 22:19:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 22:19:57,242 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:57,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:57,258 INFO L225 Difference]: With dead ends: 9988 [2021-03-10 22:19:57,258 INFO L226 Difference]: Without dead ends: 9893 [2021-03-10 22:19:57,259 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1432.4ms TimeCoverageRelationStatistics Valid=394, Invalid=4718, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 22:19:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2021-03-10 22:19:57,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 5948. [2021-03-10 22:19:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.512863628720363) internal successors, (20891), 5947 states have internal predecessors, (20891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20891 transitions. [2021-03-10 22:19:57,354 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20891 transitions. Word has length 47 [2021-03-10 22:19:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:57,354 INFO L480 AbstractCegarLoop]: Abstraction has 5948 states and 20891 transitions. [2021-03-10 22:19:57,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:57,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20891 transitions. [2021-03-10 22:19:57,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:57,361 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:57,361 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:57,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-10 22:19:57,362 INFO L428 AbstractCegarLoop]: === Iteration 46 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:57,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1313149904, now seen corresponding path program 46 times [2021-03-10 22:19:57,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:57,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591518536] [2021-03-10 22:19:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:57,616 INFO 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 22:19:57,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591518536] [2021-03-10 22:19:57,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:57,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:57,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240597168] [2021-03-10 22:19:57,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:57,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:57,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:57,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:57,617 INFO L87 Difference]: Start difference. First operand 5948 states and 20891 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:59,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:59,093 INFO L93 Difference]: Finished difference Result 6579 states and 22906 transitions. [2021-03-10 22:19:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 22:19:59,094 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:19:59,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:59,105 INFO L225 Difference]: With dead ends: 6579 [2021-03-10 22:19:59,105 INFO L226 Difference]: Without dead ends: 6482 [2021-03-10 22:19:59,106 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 964.3ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 22:19:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2021-03-10 22:19:59,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 5956. [2021-03-10 22:19:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5956 states, 5955 states have (on average 3.5111670864819478) internal successors, (20909), 5955 states have internal predecessors, (20909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 20909 transitions. [2021-03-10 22:19:59,187 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 20909 transitions. Word has length 47 [2021-03-10 22:19:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:59,187 INFO L480 AbstractCegarLoop]: Abstraction has 5956 states and 20909 transitions. [2021-03-10 22:19:59,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 20909 transitions. [2021-03-10 22:19:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:19:59,194 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:59,194 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:59,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-10 22:19:59,194 INFO L428 AbstractCegarLoop]: === Iteration 47 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:19:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:59,194 INFO L82 PathProgramCache]: Analyzing trace with hash -412270606, now seen corresponding path program 47 times [2021-03-10 22:19:59,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:59,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307761038] [2021-03-10 22:19:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:59,453 INFO 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 22:19:59,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307761038] [2021-03-10 22:19:59,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:59,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:19:59,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250743509] [2021-03-10 22:19:59,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:19:59,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:59,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:19:59,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:59,454 INFO L87 Difference]: Start difference. First operand 5956 states and 20909 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:00,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:00,724 INFO L93 Difference]: Finished difference Result 6464 states and 22553 transitions. [2021-03-10 22:20:00,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 22:20:00,725 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:00,736 INFO L225 Difference]: With dead ends: 6464 [2021-03-10 22:20:00,736 INFO L226 Difference]: Without dead ends: 6365 [2021-03-10 22:20:00,737 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 842.5ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 22:20:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6365 states. [2021-03-10 22:20:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6365 to 5948. [2021-03-10 22:20:00,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.51252732470153) internal successors, (20889), 5947 states have internal predecessors, (20889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20889 transitions. [2021-03-10 22:20:00,843 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20889 transitions. Word has length 47 [2021-03-10 22:20:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:00,844 INFO L480 AbstractCegarLoop]: Abstraction has 5948 states and 20889 transitions. [2021-03-10 22:20:00,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20889 transitions. [2021-03-10 22:20:00,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:00,851 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:00,851 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:00,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-10 22:20:00,851 INFO L428 AbstractCegarLoop]: === Iteration 48 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:00,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:00,851 INFO L82 PathProgramCache]: Analyzing trace with hash 663473958, now seen corresponding path program 48 times [2021-03-10 22:20:00,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:00,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687642614] [2021-03-10 22:20:00,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:01,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687642614] [2021-03-10 22:20:01,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:01,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:01,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548378763] [2021-03-10 22:20:01,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:01,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:01,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:01,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:01,099 INFO L87 Difference]: Start difference. First operand 5948 states and 20889 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:02,467 INFO L93 Difference]: Finished difference Result 6385 states and 22344 transitions. [2021-03-10 22:20:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:20:02,468 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:02,478 INFO L225 Difference]: With dead ends: 6385 [2021-03-10 22:20:02,478 INFO L226 Difference]: Without dead ends: 6240 [2021-03-10 22:20:02,478 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 852.0ms TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:20:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2021-03-10 22:20:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 5960. [2021-03-10 22:20:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5960 states, 5959 states have (on average 3.5104883369692903) internal successors, (20919), 5959 states have internal predecessors, (20919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 20919 transitions. [2021-03-10 22:20:02,557 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 20919 transitions. Word has length 47 [2021-03-10 22:20:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:02,557 INFO L480 AbstractCegarLoop]: Abstraction has 5960 states and 20919 transitions. [2021-03-10 22:20:02,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 20919 transitions. [2021-03-10 22:20:02,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:02,564 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:02,564 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:02,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-10 22:20:02,564 INFO L428 AbstractCegarLoop]: === Iteration 49 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:02,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:02,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1279978748, now seen corresponding path program 49 times [2021-03-10 22:20:02,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:02,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414053638] [2021-03-10 22:20:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:02,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414053638] [2021-03-10 22:20:02,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:02,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:02,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876151968] [2021-03-10 22:20:02,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:02,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:02,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:02,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:02,829 INFO L87 Difference]: Start difference. First operand 5960 states and 20919 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:04,205 INFO L93 Difference]: Finished difference Result 6406 states and 22348 transitions. [2021-03-10 22:20:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:20:04,206 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:04,217 INFO L225 Difference]: With dead ends: 6406 [2021-03-10 22:20:04,217 INFO L226 Difference]: Without dead ends: 6309 [2021-03-10 22:20:04,218 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 901.2ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 22:20:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2021-03-10 22:20:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 5966. [2021-03-10 22:20:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 5965 states have (on average 3.5094719195305952) internal successors, (20934), 5965 states have internal predecessors, (20934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 20934 transitions. [2021-03-10 22:20:04,301 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 20934 transitions. Word has length 47 [2021-03-10 22:20:04,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:04,301 INFO L480 AbstractCegarLoop]: Abstraction has 5966 states and 20934 transitions. [2021-03-10 22:20:04,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:04,301 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 20934 transitions. [2021-03-10 22:20:04,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:04,308 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:04,308 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:04,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-10 22:20:04,308 INFO L428 AbstractCegarLoop]: === Iteration 50 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:04,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1289568038, now seen corresponding path program 50 times [2021-03-10 22:20:04,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:04,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682518331] [2021-03-10 22:20:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:04,574 INFO 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 22:20:04,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682518331] [2021-03-10 22:20:04,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:04,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:04,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638639817] [2021-03-10 22:20:04,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:04,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:04,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:04,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:04,575 INFO L87 Difference]: Start difference. First operand 5966 states and 20934 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:05,845 INFO L93 Difference]: Finished difference Result 6291 states and 21995 transitions. [2021-03-10 22:20:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:20:05,845 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:05,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:05,856 INFO L225 Difference]: With dead ends: 6291 [2021-03-10 22:20:05,856 INFO L226 Difference]: Without dead ends: 6170 [2021-03-10 22:20:05,857 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 796.4ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:20:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2021-03-10 22:20:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 5936. [2021-03-10 22:20:05,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 3.5142375737152487) internal successors, (20857), 5935 states have internal predecessors, (20857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20857 transitions. [2021-03-10 22:20:05,938 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20857 transitions. Word has length 47 [2021-03-10 22:20:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:05,939 INFO L480 AbstractCegarLoop]: Abstraction has 5936 states and 20857 transitions. [2021-03-10 22:20:05,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:05,939 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20857 transitions. [2021-03-10 22:20:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:05,947 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:05,947 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:05,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-10 22:20:05,947 INFO L428 AbstractCegarLoop]: === Iteration 51 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:05,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:05,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1335783944, now seen corresponding path program 51 times [2021-03-10 22:20:05,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:05,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743074843] [2021-03-10 22:20:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:06,172 INFO 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 22:20:06,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743074843] [2021-03-10 22:20:06,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:06,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-10 22:20:06,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880049995] [2021-03-10 22:20:06,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 22:20:06,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:06,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 22:20:06,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:20:06,173 INFO L87 Difference]: Start difference. First operand 5936 states and 20857 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:07,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:07,257 INFO L93 Difference]: Finished difference Result 6489 states and 22676 transitions. [2021-03-10 22:20:07,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 22:20:07,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:07,269 INFO L225 Difference]: With dead ends: 6489 [2021-03-10 22:20:07,269 INFO L226 Difference]: Without dead ends: 6352 [2021-03-10 22:20:07,269 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 685.6ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 22:20:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-03-10 22:20:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 5952. [2021-03-10 22:20:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5951 states have (on average 3.5138632162661736) internal successors, (20911), 5951 states have internal predecessors, (20911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20911 transitions. [2021-03-10 22:20:07,351 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20911 transitions. Word has length 47 [2021-03-10 22:20:07,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:07,352 INFO L480 AbstractCegarLoop]: Abstraction has 5952 states and 20911 transitions. [2021-03-10 22:20:07,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20911 transitions. [2021-03-10 22:20:07,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:07,360 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:07,360 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:07,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-10 22:20:07,360 INFO L428 AbstractCegarLoop]: === Iteration 52 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash 526843336, now seen corresponding path program 52 times [2021-03-10 22:20:07,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:07,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127172999] [2021-03-10 22:20:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:07,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127172999] [2021-03-10 22:20:07,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:07,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:07,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850255149] [2021-03-10 22:20:07,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:07,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:07,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:07,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:07,610 INFO L87 Difference]: Start difference. First operand 5952 states and 20911 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:08,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:08,796 INFO L93 Difference]: Finished difference Result 6473 states and 22620 transitions. [2021-03-10 22:20:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:20:08,797 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:08,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:08,808 INFO L225 Difference]: With dead ends: 6473 [2021-03-10 22:20:08,808 INFO L226 Difference]: Without dead ends: 6328 [2021-03-10 22:20:08,808 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 769.9ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 22:20:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2021-03-10 22:20:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 6016. [2021-03-10 22:20:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6016 states, 6015 states have (on average 3.508395677472984) internal successors, (21103), 6015 states have internal predecessors, (21103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 21103 transitions. [2021-03-10 22:20:08,890 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 21103 transitions. Word has length 47 [2021-03-10 22:20:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:08,891 INFO L480 AbstractCegarLoop]: Abstraction has 6016 states and 21103 transitions. [2021-03-10 22:20:08,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 21103 transitions. [2021-03-10 22:20:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:08,898 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:08,898 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:08,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-10 22:20:08,898 INFO L428 AbstractCegarLoop]: === Iteration 53 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:08,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:08,898 INFO L82 PathProgramCache]: Analyzing trace with hash 253187976, now seen corresponding path program 53 times [2021-03-10 22:20:08,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:08,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362519323] [2021-03-10 22:20:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:09,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362519323] [2021-03-10 22:20:09,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:09,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:09,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586068298] [2021-03-10 22:20:09,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:09,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:09,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:09,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:09,151 INFO L87 Difference]: Start difference. First operand 6016 states and 21103 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:10,399 INFO L93 Difference]: Finished difference Result 6521 states and 22796 transitions. [2021-03-10 22:20:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:20:10,400 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:10,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:10,411 INFO L225 Difference]: With dead ends: 6521 [2021-03-10 22:20:10,411 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 22:20:10,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 774.9ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 22:20:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 22:20:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5952. [2021-03-10 22:20:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5951 states have (on average 3.511174592505461) internal successors, (20895), 5951 states have internal predecessors, (20895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20895 transitions. [2021-03-10 22:20:10,493 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20895 transitions. Word has length 47 [2021-03-10 22:20:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:10,493 INFO L480 AbstractCegarLoop]: Abstraction has 5952 states and 20895 transitions. [2021-03-10 22:20:10,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20895 transitions. [2021-03-10 22:20:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:10,499 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:10,500 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:10,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-10 22:20:10,500 INFO L428 AbstractCegarLoop]: === Iteration 54 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:10,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1988507238, now seen corresponding path program 54 times [2021-03-10 22:20:10,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:10,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906707232] [2021-03-10 22:20:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:10,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906707232] [2021-03-10 22:20:10,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:10,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:10,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54801356] [2021-03-10 22:20:10,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:10,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:10,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:10,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:10,772 INFO L87 Difference]: Start difference. First operand 5952 states and 20895 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:12,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:12,057 INFO L93 Difference]: Finished difference Result 6409 states and 22380 transitions. [2021-03-10 22:20:12,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 22:20:12,058 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:12,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:12,069 INFO L225 Difference]: With dead ends: 6409 [2021-03-10 22:20:12,069 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 22:20:12,070 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 790.0ms TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 22:20:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 22:20:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5970. [2021-03-10 22:20:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5970 states, 5969 states have (on average 3.5081253141229687) internal successors, (20940), 5969 states have internal predecessors, (20940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20940 transitions. [2021-03-10 22:20:12,155 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20940 transitions. Word has length 47 [2021-03-10 22:20:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:12,155 INFO L480 AbstractCegarLoop]: Abstraction has 5970 states and 20940 transitions. [2021-03-10 22:20:12,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20940 transitions. [2021-03-10 22:20:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:12,163 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:12,163 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:12,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-10 22:20:12,163 INFO L428 AbstractCegarLoop]: === Iteration 55 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:12,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1179566630, now seen corresponding path program 55 times [2021-03-10 22:20:12,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:12,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930146611] [2021-03-10 22:20:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:12,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930146611] [2021-03-10 22:20:12,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:12,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:12,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265307464] [2021-03-10 22:20:12,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:12,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:12,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:12,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:12,435 INFO L87 Difference]: Start difference. First operand 5970 states and 20940 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:13,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:13,811 INFO L93 Difference]: Finished difference Result 6393 states and 22312 transitions. [2021-03-10 22:20:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:20:13,812 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:13,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:13,823 INFO L225 Difference]: With dead ends: 6393 [2021-03-10 22:20:13,823 INFO L226 Difference]: Without dead ends: 6248 [2021-03-10 22:20:13,824 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 846.9ms TimeCoverageRelationStatistics Valid=181, Invalid=1799, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:20:13,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2021-03-10 22:20:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 5970. [2021-03-10 22:20:13,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5970 states, 5969 states have (on average 3.50712012062322) internal successors, (20934), 5969 states have internal predecessors, (20934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20934 transitions. [2021-03-10 22:20:13,906 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20934 transitions. Word has length 47 [2021-03-10 22:20:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:13,907 INFO L480 AbstractCegarLoop]: Abstraction has 5970 states and 20934 transitions. [2021-03-10 22:20:13,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20934 transitions. [2021-03-10 22:20:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:13,914 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:13,914 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:13,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-10 22:20:13,914 INFO L428 AbstractCegarLoop]: === Iteration 56 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:13,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2079462408, now seen corresponding path program 56 times [2021-03-10 22:20:13,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:13,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818160473] [2021-03-10 22:20:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:14,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818160473] [2021-03-10 22:20:14,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:14,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:14,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098872066] [2021-03-10 22:20:14,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:14,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:14,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:14,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:14,236 INFO L87 Difference]: Start difference. First operand 5970 states and 20934 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:18,392 INFO L93 Difference]: Finished difference Result 11008 states and 39096 transitions. [2021-03-10 22:20:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-03-10 22:20:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:18,413 INFO L225 Difference]: With dead ends: 11008 [2021-03-10 22:20:18,413 INFO L226 Difference]: Without dead ends: 10871 [2021-03-10 22:20:18,414 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 2219.7ms TimeCoverageRelationStatistics Valid=609, Invalid=6363, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 22:20:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2021-03-10 22:20:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 6020. [2021-03-10 22:20:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6020 states, 6019 states have (on average 3.507227114138561) internal successors, (21110), 6019 states have internal predecessors, (21110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 21110 transitions. [2021-03-10 22:20:18,525 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 21110 transitions. Word has length 47 [2021-03-10 22:20:18,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:18,526 INFO L480 AbstractCegarLoop]: Abstraction has 6020 states and 21110 transitions. [2021-03-10 22:20:18,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 21110 transitions. [2021-03-10 22:20:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:18,533 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:18,533 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:18,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-10 22:20:18,533 INFO L428 AbstractCegarLoop]: === Iteration 57 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:18,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1228810500, now seen corresponding path program 57 times [2021-03-10 22:20:18,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:18,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353616877] [2021-03-10 22:20:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:18,831 INFO 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 22:20:18,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353616877] [2021-03-10 22:20:18,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:18,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:18,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084485560] [2021-03-10 22:20:18,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:18,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:18,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:18,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:18,832 INFO L87 Difference]: Start difference. First operand 6020 states and 21110 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:22,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:22,862 INFO L93 Difference]: Finished difference Result 11027 states and 39284 transitions. [2021-03-10 22:20:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 22:20:22,863 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:22,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:22,883 INFO L225 Difference]: With dead ends: 11027 [2021-03-10 22:20:22,883 INFO L226 Difference]: Without dead ends: 10920 [2021-03-10 22:20:22,884 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1945 ImplicationChecksByTransitivity, 2199.6ms TimeCoverageRelationStatistics Valid=568, Invalid=6074, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 22:20:22,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10920 states. [2021-03-10 22:20:22,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10920 to 5998. [2021-03-10 22:20:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5998 states, 5997 states have (on average 3.510255127563782) internal successors, (21051), 5997 states have internal predecessors, (21051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5998 states to 5998 states and 21051 transitions. [2021-03-10 22:20:23,000 INFO L78 Accepts]: Start accepts. Automaton has 5998 states and 21051 transitions. Word has length 47 [2021-03-10 22:20:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:23,000 INFO L480 AbstractCegarLoop]: Abstraction has 5998 states and 21051 transitions. [2021-03-10 22:20:23,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5998 states and 21051 transitions. [2021-03-10 22:20:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:23,007 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:23,007 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:23,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-10 22:20:23,008 INFO L428 AbstractCegarLoop]: === Iteration 58 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:23,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:23,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1385555350, now seen corresponding path program 58 times [2021-03-10 22:20:23,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:23,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669202708] [2021-03-10 22:20:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:23,276 INFO 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 22:20:23,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669202708] [2021-03-10 22:20:23,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:23,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:23,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809623114] [2021-03-10 22:20:23,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:23,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:23,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:23,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:23,277 INFO L87 Difference]: Start difference. First operand 5998 states and 21051 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:24,781 INFO L93 Difference]: Finished difference Result 6601 states and 22970 transitions. [2021-03-10 22:20:24,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 22:20:24,782 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:24,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:24,793 INFO L225 Difference]: With dead ends: 6601 [2021-03-10 22:20:24,793 INFO L226 Difference]: Without dead ends: 6480 [2021-03-10 22:20:24,794 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 956.8ms TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 22:20:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6480 states. [2021-03-10 22:20:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6480 to 6004. [2021-03-10 22:20:24,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6004 states, 6003 states have (on average 3.508912210561386) internal successors, (21064), 6003 states have internal predecessors, (21064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6004 states to 6004 states and 21064 transitions. [2021-03-10 22:20:24,878 INFO L78 Accepts]: Start accepts. Automaton has 6004 states and 21064 transitions. Word has length 47 [2021-03-10 22:20:24,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:24,878 INFO L480 AbstractCegarLoop]: Abstraction has 6004 states and 21064 transitions. [2021-03-10 22:20:24,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:24,878 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states and 21064 transitions. [2021-03-10 22:20:24,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:24,886 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:24,886 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:24,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-10 22:20:24,886 INFO L428 AbstractCegarLoop]: === Iteration 59 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:24,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:24,886 INFO L82 PathProgramCache]: Analyzing trace with hash 185866086, now seen corresponding path program 59 times [2021-03-10 22:20:24,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:24,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99336861] [2021-03-10 22:20:24,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:25,155 INFO 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 22:20:25,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99336861] [2021-03-10 22:20:25,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:25,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:25,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312435854] [2021-03-10 22:20:25,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:25,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:25,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:25,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:25,156 INFO L87 Difference]: Start difference. First operand 6004 states and 21064 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:27,284 INFO L93 Difference]: Finished difference Result 7445 states and 26088 transitions. [2021-03-10 22:20:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-10 22:20:27,284 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:27,296 INFO L225 Difference]: With dead ends: 7445 [2021-03-10 22:20:27,296 INFO L226 Difference]: Without dead ends: 7201 [2021-03-10 22:20:27,297 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1174.7ms TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 22:20:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2021-03-10 22:20:27,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 6072. [2021-03-10 22:20:27,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6071 states have (on average 3.5065063416241147) internal successors, (21288), 6071 states have internal predecessors, (21288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 21288 transitions. [2021-03-10 22:20:27,383 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 21288 transitions. Word has length 47 [2021-03-10 22:20:27,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:27,383 INFO L480 AbstractCegarLoop]: Abstraction has 6072 states and 21288 transitions. [2021-03-10 22:20:27,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:27,383 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 21288 transitions. [2021-03-10 22:20:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:27,391 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:27,391 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:27,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-10 22:20:27,391 INFO L428 AbstractCegarLoop]: === Iteration 60 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:27,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:27,391 INFO L82 PathProgramCache]: Analyzing trace with hash 484757764, now seen corresponding path program 60 times [2021-03-10 22:20:27,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:27,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825984036] [2021-03-10 22:20:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:27,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825984036] [2021-03-10 22:20:27,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:27,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:27,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877473158] [2021-03-10 22:20:27,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:27,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:27,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:27,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:27,666 INFO L87 Difference]: Start difference. First operand 6072 states and 21288 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:29,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:29,175 INFO L93 Difference]: Finished difference Result 6570 states and 22873 transitions. [2021-03-10 22:20:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 22:20:29,177 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:29,187 INFO L225 Difference]: With dead ends: 6570 [2021-03-10 22:20:29,188 INFO L226 Difference]: Without dead ends: 6473 [2021-03-10 22:20:29,188 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 973.3ms TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 22:20:29,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6473 states. [2021-03-10 22:20:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6473 to 6086. [2021-03-10 22:20:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6086 states, 6085 states have (on average 3.5028759244042726) internal successors, (21315), 6085 states have internal predecessors, (21315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 21315 transitions. [2021-03-10 22:20:29,270 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 21315 transitions. Word has length 47 [2021-03-10 22:20:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:29,271 INFO L480 AbstractCegarLoop]: Abstraction has 6086 states and 21315 transitions. [2021-03-10 22:20:29,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:29,271 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 21315 transitions. [2021-03-10 22:20:29,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:29,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:29,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:29,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-10 22:20:29,278 INFO L428 AbstractCegarLoop]: === Iteration 61 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:29,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:29,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1240662746, now seen corresponding path program 61 times [2021-03-10 22:20:29,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:29,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652735281] [2021-03-10 22:20:29,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:29,584 INFO 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 22:20:29,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652735281] [2021-03-10 22:20:29,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:29,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:29,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348309990] [2021-03-10 22:20:29,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:29,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:29,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:29,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:29,585 INFO L87 Difference]: Start difference. First operand 6086 states and 21315 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:30,937 INFO L93 Difference]: Finished difference Result 6455 states and 22520 transitions. [2021-03-10 22:20:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:20:30,938 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:30,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:30,949 INFO L225 Difference]: With dead ends: 6455 [2021-03-10 22:20:30,950 INFO L226 Difference]: Without dead ends: 6350 [2021-03-10 22:20:30,950 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 858.7ms TimeCoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:20:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-03-10 22:20:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 6072. [2021-03-10 22:20:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6071 states have (on average 3.505518036567287) internal successors, (21282), 6071 states have internal predecessors, (21282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 21282 transitions. [2021-03-10 22:20:31,036 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 21282 transitions. Word has length 47 [2021-03-10 22:20:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:31,036 INFO L480 AbstractCegarLoop]: Abstraction has 6072 states and 21282 transitions. [2021-03-10 22:20:31,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 21282 transitions. [2021-03-10 22:20:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:31,044 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:31,044 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:31,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-10 22:20:31,044 INFO L428 AbstractCegarLoop]: === Iteration 62 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:31,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:31,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1995258442, now seen corresponding path program 62 times [2021-03-10 22:20:31,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:31,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577236159] [2021-03-10 22:20:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:31,353 INFO 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 22:20:31,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577236159] [2021-03-10 22:20:31,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:31,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:31,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059628312] [2021-03-10 22:20:31,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:31,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:31,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:31,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:31,354 INFO L87 Difference]: Start difference. First operand 6072 states and 21282 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:32,858 INFO L93 Difference]: Finished difference Result 6712 states and 23400 transitions. [2021-03-10 22:20:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 22:20:32,858 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:32,870 INFO L225 Difference]: With dead ends: 6712 [2021-03-10 22:20:32,870 INFO L226 Difference]: Without dead ends: 6527 [2021-03-10 22:20:32,870 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 991.8ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 22:20:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2021-03-10 22:20:32,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 6076. [2021-03-10 22:20:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6076 states, 6075 states have (on average 3.504855967078189) internal successors, (21292), 6075 states have internal predecessors, (21292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 21292 transitions. [2021-03-10 22:20:32,956 INFO L78 Accepts]: Start accepts. Automaton has 6076 states and 21292 transitions. Word has length 47 [2021-03-10 22:20:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:32,956 INFO L480 AbstractCegarLoop]: Abstraction has 6076 states and 21292 transitions. [2021-03-10 22:20:32,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6076 states and 21292 transitions. [2021-03-10 22:20:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:32,964 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:32,964 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:32,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-10 22:20:32,964 INFO L428 AbstractCegarLoop]: === Iteration 63 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:32,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2112750184, now seen corresponding path program 63 times [2021-03-10 22:20:32,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:32,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389647003] [2021-03-10 22:20:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:33,241 INFO 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 22:20:33,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389647003] [2021-03-10 22:20:33,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:33,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:33,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371176732] [2021-03-10 22:20:33,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:33,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:33,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:33,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:33,242 INFO L87 Difference]: Start difference. First operand 6076 states and 21292 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:34,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:34,773 INFO L93 Difference]: Finished difference Result 6804 states and 23603 transitions. [2021-03-10 22:20:34,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 22:20:34,774 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:34,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:34,786 INFO L225 Difference]: With dead ends: 6804 [2021-03-10 22:20:34,786 INFO L226 Difference]: Without dead ends: 6667 [2021-03-10 22:20:34,786 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 962.2ms TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 22:20:34,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6667 states. [2021-03-10 22:20:34,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 6082. [2021-03-10 22:20:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6082 states, 6081 states have (on average 3.5035356026969247) internal successors, (21305), 6081 states have internal predecessors, (21305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:34,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 21305 transitions. [2021-03-10 22:20:34,870 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 21305 transitions. Word has length 47 [2021-03-10 22:20:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:34,870 INFO L480 AbstractCegarLoop]: Abstraction has 6082 states and 21305 transitions. [2021-03-10 22:20:34,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 21305 transitions. [2021-03-10 22:20:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:34,878 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:34,878 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:34,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-10 22:20:34,878 INFO L428 AbstractCegarLoop]: === Iteration 64 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:34,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:34,878 INFO L82 PathProgramCache]: Analyzing trace with hash -541328748, now seen corresponding path program 64 times [2021-03-10 22:20:34,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:34,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180643721] [2021-03-10 22:20:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:35,168 INFO 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 22:20:35,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180643721] [2021-03-10 22:20:35,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:35,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:35,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028222807] [2021-03-10 22:20:35,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:35,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:35,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:35,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:35,169 INFO L87 Difference]: Start difference. First operand 6082 states and 21305 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:38,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:38,329 INFO L93 Difference]: Finished difference Result 11009 states and 38579 transitions. [2021-03-10 22:20:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 22:20:38,329 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:38,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:38,349 INFO L225 Difference]: With dead ends: 11009 [2021-03-10 22:20:38,349 INFO L226 Difference]: Without dead ends: 10769 [2021-03-10 22:20:38,350 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 1540.6ms TimeCoverageRelationStatistics Valid=381, Invalid=4449, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 22:20:38,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10769 states. [2021-03-10 22:20:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10769 to 6106. [2021-03-10 22:20:38,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6106 states, 6105 states have (on average 3.500900900900901) internal successors, (21373), 6105 states have internal predecessors, (21373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 21373 transitions. [2021-03-10 22:20:38,462 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 21373 transitions. Word has length 47 [2021-03-10 22:20:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:38,462 INFO L480 AbstractCegarLoop]: Abstraction has 6106 states and 21373 transitions. [2021-03-10 22:20:38,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 21373 transitions. [2021-03-10 22:20:38,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:38,470 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:38,470 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:38,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-10 22:20:38,470 INFO L428 AbstractCegarLoop]: === Iteration 65 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:38,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:38,470 INFO L82 PathProgramCache]: Analyzing trace with hash -242437070, now seen corresponding path program 65 times [2021-03-10 22:20:38,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:38,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822077404] [2021-03-10 22:20:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:38,802 INFO 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 22:20:38,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822077404] [2021-03-10 22:20:38,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:38,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:38,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175900402] [2021-03-10 22:20:38,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:38,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:38,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:38,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:38,803 INFO L87 Difference]: Start difference. First operand 6106 states and 21373 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:40,320 INFO L93 Difference]: Finished difference Result 6731 states and 23367 transitions. [2021-03-10 22:20:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 22:20:40,321 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:40,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:40,332 INFO L225 Difference]: With dead ends: 6731 [2021-03-10 22:20:40,332 INFO L226 Difference]: Without dead ends: 6634 [2021-03-10 22:20:40,332 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 1016.8ms TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 22:20:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2021-03-10 22:20:40,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6114. [2021-03-10 22:20:40,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 6113 states have (on average 3.499263863896614) internal successors, (21391), 6113 states have internal predecessors, (21391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 21391 transitions. [2021-03-10 22:20:40,421 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 21391 transitions. Word has length 47 [2021-03-10 22:20:40,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:40,421 INFO L480 AbstractCegarLoop]: Abstraction has 6114 states and 21391 transitions. [2021-03-10 22:20:40,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 21391 transitions. [2021-03-10 22:20:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:40,429 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:40,429 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:40,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-10 22:20:40,429 INFO L428 AbstractCegarLoop]: === Iteration 66 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:40,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1967857580, now seen corresponding path program 66 times [2021-03-10 22:20:40,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:40,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218501990] [2021-03-10 22:20:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:40,718 INFO 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 22:20:40,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218501990] [2021-03-10 22:20:40,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:40,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:40,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592936056] [2021-03-10 22:20:40,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:40,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:40,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:40,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:40,719 INFO L87 Difference]: Start difference. First operand 6114 states and 21391 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:42,030 INFO L93 Difference]: Finished difference Result 6616 states and 23014 transitions. [2021-03-10 22:20:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:20:42,030 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:42,042 INFO L225 Difference]: With dead ends: 6616 [2021-03-10 22:20:42,043 INFO L226 Difference]: Without dead ends: 6517 [2021-03-10 22:20:42,043 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 842.5ms TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 22:20:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6517 states. [2021-03-10 22:20:42,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6517 to 6106. [2021-03-10 22:20:42,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6106 states, 6105 states have (on average 3.5005733005733006) internal successors, (21371), 6105 states have internal predecessors, (21371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 21371 transitions. [2021-03-10 22:20:42,129 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 21371 transitions. Word has length 47 [2021-03-10 22:20:42,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:42,129 INFO L480 AbstractCegarLoop]: Abstraction has 6106 states and 21371 transitions. [2021-03-10 22:20:42,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 21371 transitions. [2021-03-10 22:20:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:42,137 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:42,137 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:42,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-10 22:20:42,137 INFO L428 AbstractCegarLoop]: === Iteration 67 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:42,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:42,137 INFO L82 PathProgramCache]: Analyzing trace with hash -892113016, now seen corresponding path program 67 times [2021-03-10 22:20:42,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:42,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652678114] [2021-03-10 22:20:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:42,401 INFO 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 22:20:42,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652678114] [2021-03-10 22:20:42,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:42,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:42,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156440113] [2021-03-10 22:20:42,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:42,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:42,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:42,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:42,402 INFO L87 Difference]: Start difference. First operand 6106 states and 21371 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:43,723 INFO L93 Difference]: Finished difference Result 6537 states and 22805 transitions. [2021-03-10 22:20:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 22:20:43,724 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:43,735 INFO L225 Difference]: With dead ends: 6537 [2021-03-10 22:20:43,735 INFO L226 Difference]: Without dead ends: 6392 [2021-03-10 22:20:43,735 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 836.0ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 22:20:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6392 states. [2021-03-10 22:20:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6392 to 6118. [2021-03-10 22:20:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 6117 states have (on average 3.4986104299493217) internal successors, (21401), 6117 states have internal predecessors, (21401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 21401 transitions. [2021-03-10 22:20:43,817 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 21401 transitions. Word has length 47 [2021-03-10 22:20:43,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:43,817 INFO L480 AbstractCegarLoop]: Abstraction has 6118 states and 21401 transitions. [2021-03-10 22:20:43,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:43,817 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 21401 transitions. [2021-03-10 22:20:43,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:43,825 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:43,825 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:43,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-10 22:20:43,825 INFO L428 AbstractCegarLoop]: === Iteration 68 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:43,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:43,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1459401574, now seen corresponding path program 68 times [2021-03-10 22:20:43,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:43,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502151861] [2021-03-10 22:20:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:44,112 INFO 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 22:20:44,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502151861] [2021-03-10 22:20:44,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:44,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:44,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144129007] [2021-03-10 22:20:44,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:44,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:44,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:44,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:44,113 INFO L87 Difference]: Start difference. First operand 6118 states and 21401 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:45,506 INFO L93 Difference]: Finished difference Result 6558 states and 22809 transitions. [2021-03-10 22:20:45,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:20:45,507 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:45,517 INFO L225 Difference]: With dead ends: 6558 [2021-03-10 22:20:45,517 INFO L226 Difference]: Without dead ends: 6461 [2021-03-10 22:20:45,518 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 884.9ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:20:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6461 states. [2021-03-10 22:20:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6461 to 6124. [2021-03-10 22:20:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6124 states, 6123 states have (on average 3.497631879797485) internal successors, (21416), 6123 states have internal predecessors, (21416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 21416 transitions. [2021-03-10 22:20:45,604 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 21416 transitions. Word has length 47 [2021-03-10 22:20:45,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:45,605 INFO L480 AbstractCegarLoop]: Abstraction has 6124 states and 21416 transitions. [2021-03-10 22:20:45,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 21416 transitions. [2021-03-10 22:20:45,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:45,612 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:45,612 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:45,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-10 22:20:45,612 INFO L428 AbstractCegarLoop]: === Iteration 69 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:45,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:45,613 INFO L82 PathProgramCache]: Analyzing trace with hash -266018936, now seen corresponding path program 69 times [2021-03-10 22:20:45,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:45,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777056517] [2021-03-10 22:20:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:45,891 INFO 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 22:20:45,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777056517] [2021-03-10 22:20:45,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:45,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:20:45,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71976398] [2021-03-10 22:20:45,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:20:45,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:45,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:20:45,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:45,892 INFO L87 Difference]: Start difference. First operand 6124 states and 21416 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:47,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:47,150 INFO L93 Difference]: Finished difference Result 6443 states and 22456 transitions. [2021-03-10 22:20:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 22:20:47,150 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:47,162 INFO L225 Difference]: With dead ends: 6443 [2021-03-10 22:20:47,162 INFO L226 Difference]: Without dead ends: 6282 [2021-03-10 22:20:47,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 785.1ms TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 22:20:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-03-10 22:20:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6054. [2021-03-10 22:20:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 6053 states have (on average 3.5081777630926814) internal successors, (21235), 6053 states have internal predecessors, (21235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 21235 transitions. [2021-03-10 22:20:47,247 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 21235 transitions. Word has length 47 [2021-03-10 22:20:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:47,247 INFO L480 AbstractCegarLoop]: Abstraction has 6054 states and 21235 transitions. [2021-03-10 22:20:47,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 21235 transitions. [2021-03-10 22:20:47,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:47,254 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:47,254 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:47,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-10 22:20:47,254 INFO L428 AbstractCegarLoop]: === Iteration 70 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:47,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:47,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1367624742, now seen corresponding path program 70 times [2021-03-10 22:20:47,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:47,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979503965] [2021-03-10 22:20:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:47,495 INFO 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 22:20:47,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979503965] [2021-03-10 22:20:47,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:47,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-10 22:20:47,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940875028] [2021-03-10 22:20:47,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 22:20:47,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:47,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 22:20:47,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:20:47,496 INFO L87 Difference]: Start difference. First operand 6054 states and 21235 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:48,757 INFO L93 Difference]: Finished difference Result 6791 states and 23680 transitions. [2021-03-10 22:20:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:20:48,757 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:48,769 INFO L225 Difference]: With dead ends: 6791 [2021-03-10 22:20:48,769 INFO L226 Difference]: Without dead ends: 6654 [2021-03-10 22:20:48,770 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 768.4ms TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 22:20:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2021-03-10 22:20:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 6074. [2021-03-10 22:20:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6074 states, 6073 states have (on average 3.507492178494978) internal successors, (21301), 6073 states have internal predecessors, (21301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:48,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 21301 transitions. [2021-03-10 22:20:48,854 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 21301 transitions. Word has length 47 [2021-03-10 22:20:48,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:48,854 INFO L480 AbstractCegarLoop]: Abstraction has 6074 states and 21301 transitions. [2021-03-10 22:20:48,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:48,854 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 21301 transitions. [2021-03-10 22:20:48,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:48,861 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:48,861 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:48,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-10 22:20:48,862 INFO L428 AbstractCegarLoop]: === Iteration 71 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:48,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:48,862 INFO L82 PathProgramCache]: Analyzing trace with hash 150071480, now seen corresponding path program 71 times [2021-03-10 22:20:48,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:48,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128973319] [2021-03-10 22:20:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:49,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128973319] [2021-03-10 22:20:49,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:49,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:49,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78479041] [2021-03-10 22:20:49,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:49,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:49,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:49,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:49,128 INFO L87 Difference]: Start difference. First operand 6074 states and 21301 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:50,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:50,472 INFO L93 Difference]: Finished difference Result 6850 states and 23839 transitions. [2021-03-10 22:20:50,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:20:50,473 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:50,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:50,485 INFO L225 Difference]: With dead ends: 6850 [2021-03-10 22:20:50,485 INFO L226 Difference]: Without dead ends: 6761 [2021-03-10 22:20:50,485 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 862.9ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:20:50,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2021-03-10 22:20:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6170. [2021-03-10 22:20:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6170 states, 6169 states have (on average 3.500891554546928) internal successors, (21597), 6169 states have internal predecessors, (21597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 21597 transitions. [2021-03-10 22:20:50,574 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 21597 transitions. Word has length 47 [2021-03-10 22:20:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:50,574 INFO L480 AbstractCegarLoop]: Abstraction has 6170 states and 21597 transitions. [2021-03-10 22:20:50,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 21597 transitions. [2021-03-10 22:20:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:50,582 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:50,582 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:50,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-10 22:20:50,582 INFO L428 AbstractCegarLoop]: === Iteration 72 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:50,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:50,582 INFO L82 PathProgramCache]: Analyzing trace with hash 584100826, now seen corresponding path program 72 times [2021-03-10 22:20:50,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:50,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420803629] [2021-03-10 22:20:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:50,855 INFO 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 22:20:50,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420803629] [2021-03-10 22:20:50,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:50,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:50,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025496197] [2021-03-10 22:20:50,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:50,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:50,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:50,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:50,856 INFO L87 Difference]: Start difference. First operand 6170 states and 21597 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:52,277 INFO L93 Difference]: Finished difference Result 6839 states and 23808 transitions. [2021-03-10 22:20:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:20:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:52,290 INFO L225 Difference]: With dead ends: 6839 [2021-03-10 22:20:52,290 INFO L226 Difference]: Without dead ends: 6614 [2021-03-10 22:20:52,290 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 882.1ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:20:52,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2021-03-10 22:20:52,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6144. [2021-03-10 22:20:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 3.501220901839492) internal successors, (21508), 6143 states have internal predecessors, (21508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:52,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21508 transitions. [2021-03-10 22:20:52,378 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21508 transitions. Word has length 47 [2021-03-10 22:20:52,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:52,378 INFO L480 AbstractCegarLoop]: Abstraction has 6144 states and 21508 transitions. [2021-03-10 22:20:52,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:52,378 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21508 transitions. [2021-03-10 22:20:52,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:52,386 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:52,386 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:52,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-10 22:20:52,386 INFO L428 AbstractCegarLoop]: === Iteration 73 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:52,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:52,386 INFO L82 PathProgramCache]: Analyzing trace with hash 2145534312, now seen corresponding path program 73 times [2021-03-10 22:20:52,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:52,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722258386] [2021-03-10 22:20:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:52,659 INFO 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 22:20:52,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722258386] [2021-03-10 22:20:52,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:52,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:52,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117770807] [2021-03-10 22:20:52,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:52,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:52,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:52,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:52,660 INFO L87 Difference]: Start difference. First operand 6144 states and 21508 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:54,016 INFO L93 Difference]: Finished difference Result 6842 states and 23813 transitions. [2021-03-10 22:20:54,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:20:54,016 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:54,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:54,028 INFO L225 Difference]: With dead ends: 6842 [2021-03-10 22:20:54,028 INFO L226 Difference]: Without dead ends: 6753 [2021-03-10 22:20:54,028 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 897.4ms TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:20:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2021-03-10 22:20:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 6168. [2021-03-10 22:20:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6168 states, 6167 states have (on average 3.4999189233014434) internal successors, (21584), 6167 states have internal predecessors, (21584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 21584 transitions. [2021-03-10 22:20:54,114 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 21584 transitions. Word has length 47 [2021-03-10 22:20:54,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:54,114 INFO L480 AbstractCegarLoop]: Abstraction has 6168 states and 21584 transitions. [2021-03-10 22:20:54,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:54,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 21584 transitions. [2021-03-10 22:20:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:54,122 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:54,122 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:54,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-10 22:20:54,122 INFO L428 AbstractCegarLoop]: === Iteration 74 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:54,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1715403638, now seen corresponding path program 74 times [2021-03-10 22:20:54,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:54,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161378288] [2021-03-10 22:20:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:54,387 INFO 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 22:20:54,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161378288] [2021-03-10 22:20:54,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:54,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:54,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172499111] [2021-03-10 22:20:54,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:54,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:54,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:54,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:54,388 INFO L87 Difference]: Start difference. First operand 6168 states and 21584 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:55,857 INFO L93 Difference]: Finished difference Result 6866 states and 23889 transitions. [2021-03-10 22:20:55,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 22:20:55,858 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:55,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:55,870 INFO L225 Difference]: With dead ends: 6866 [2021-03-10 22:20:55,870 INFO L226 Difference]: Without dead ends: 6761 [2021-03-10 22:20:55,870 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 911.4ms TimeCoverageRelationStatistics Valid=193, Invalid=1877, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 22:20:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2021-03-10 22:20:55,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6160. [2021-03-10 22:20:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 3.4999188179899337) internal successors, (21556), 6159 states have internal predecessors, (21556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21556 transitions. [2021-03-10 22:20:55,956 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21556 transitions. Word has length 47 [2021-03-10 22:20:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:55,956 INFO L480 AbstractCegarLoop]: Abstraction has 6160 states and 21556 transitions. [2021-03-10 22:20:55,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21556 transitions. [2021-03-10 22:20:55,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:55,964 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:55,964 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:55,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-10 22:20:55,964 INFO L428 AbstractCegarLoop]: === Iteration 75 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:55,964 INFO L82 PathProgramCache]: Analyzing trace with hash -442469930, now seen corresponding path program 75 times [2021-03-10 22:20:55,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:55,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429714174] [2021-03-10 22:20:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:56,234 INFO 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 22:20:56,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429714174] [2021-03-10 22:20:56,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:56,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:56,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009026716] [2021-03-10 22:20:56,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:56,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:56,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:56,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:56,235 INFO L87 Difference]: Start difference. First operand 6160 states and 21556 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:57,665 INFO L93 Difference]: Finished difference Result 6767 states and 23590 transitions. [2021-03-10 22:20:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:20:57,666 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:20:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:57,677 INFO L225 Difference]: With dead ends: 6767 [2021-03-10 22:20:57,677 INFO L226 Difference]: Without dead ends: 6542 [2021-03-10 22:20:57,678 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 883.1ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:20:57,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2021-03-10 22:20:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6080. [2021-03-10 22:20:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 6079 states have (on average 3.5038657673959532) internal successors, (21300), 6079 states have internal predecessors, (21300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 21300 transitions. [2021-03-10 22:20:57,788 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 21300 transitions. Word has length 47 [2021-03-10 22:20:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:57,788 INFO L480 AbstractCegarLoop]: Abstraction has 6080 states and 21300 transitions. [2021-03-10 22:20:57,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:57,789 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 21300 transitions. [2021-03-10 22:20:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:20:57,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:57,796 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:57,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-10 22:20:57,796 INFO L428 AbstractCegarLoop]: === Iteration 76 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:20:57,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:57,796 INFO L82 PathProgramCache]: Analyzing trace with hash -386634088, now seen corresponding path program 76 times [2021-03-10 22:20:57,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:57,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001026392] [2021-03-10 22:20:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:58,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001026392] [2021-03-10 22:20:58,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:58,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:20:58,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260963355] [2021-03-10 22:20:58,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:20:58,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:58,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:20:58,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:20:58,079 INFO L87 Difference]: Start difference. First operand 6080 states and 21300 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:01,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:01,884 INFO L93 Difference]: Finished difference Result 9849 states and 34418 transitions. [2021-03-10 22:21:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-03-10 22:21:01,885 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:01,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:01,904 INFO L225 Difference]: With dead ends: 9849 [2021-03-10 22:21:01,904 INFO L226 Difference]: Without dead ends: 9712 [2021-03-10 22:21:01,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1992.5ms TimeCoverageRelationStatistics Valid=467, Invalid=5083, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 22:21:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2021-03-10 22:21:01,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 6118. [2021-03-10 22:21:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 6117 states have (on average 3.5002452182442374) internal successors, (21411), 6117 states have internal predecessors, (21411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 21411 transitions. [2021-03-10 22:21:02,013 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 21411 transitions. Word has length 47 [2021-03-10 22:21:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:02,013 INFO L480 AbstractCegarLoop]: Abstraction has 6118 states and 21411 transitions. [2021-03-10 22:21:02,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 21411 transitions. [2021-03-10 22:21:02,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:02,020 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:02,020 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:02,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-10 22:21:02,021 INFO L428 AbstractCegarLoop]: === Iteration 77 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:02,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:02,021 INFO L82 PathProgramCache]: Analyzing trace with hash -400165510, now seen corresponding path program 77 times [2021-03-10 22:21:02,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:02,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290298773] [2021-03-10 22:21:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:02,321 INFO 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 22:21:02,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290298773] [2021-03-10 22:21:02,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:02,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:02,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603707225] [2021-03-10 22:21:02,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:02,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:02,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:02,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:02,322 INFO L87 Difference]: Start difference. First operand 6118 states and 21411 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:06,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:06,674 INFO L93 Difference]: Finished difference Result 10931 states and 38497 transitions. [2021-03-10 22:21:06,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-03-10 22:21:06,674 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:06,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:06,694 INFO L225 Difference]: With dead ends: 10931 [2021-03-10 22:21:06,694 INFO L226 Difference]: Without dead ends: 10842 [2021-03-10 22:21:06,695 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 2429.6ms TimeCoverageRelationStatistics Valid=594, Invalid=6048, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 22:21:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2021-03-10 22:21:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 6122. [2021-03-10 22:21:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 6121 states have (on average 3.499264826008822) internal successors, (21419), 6121 states have internal predecessors, (21419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 21419 transitions. [2021-03-10 22:21:06,804 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 21419 transitions. Word has length 47 [2021-03-10 22:21:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:06,804 INFO L480 AbstractCegarLoop]: Abstraction has 6122 states and 21419 transitions. [2021-03-10 22:21:06,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 21419 transitions. [2021-03-10 22:21:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:06,811 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:06,811 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:06,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-10 22:21:06,811 INFO L428 AbstractCegarLoop]: === Iteration 78 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:06,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1250817418, now seen corresponding path program 78 times [2021-03-10 22:21:06,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:06,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403107320] [2021-03-10 22:21:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:07,118 INFO 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 22:21:07,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403107320] [2021-03-10 22:21:07,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:07,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:07,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796008446] [2021-03-10 22:21:07,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:07,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:07,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:07,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:07,119 INFO L87 Difference]: Start difference. First operand 6122 states and 21419 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:11,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:11,235 INFO L93 Difference]: Finished difference Result 11010 states and 38913 transitions. [2021-03-10 22:21:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-03-10 22:21:11,236 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:11,257 INFO L225 Difference]: With dead ends: 11010 [2021-03-10 22:21:11,258 INFO L226 Difference]: Without dead ends: 10903 [2021-03-10 22:21:11,258 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 2271.2ms TimeCoverageRelationStatistics Valid=553, Invalid=5767, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 22:21:11,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10903 states. [2021-03-10 22:21:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10903 to 6084. [2021-03-10 22:21:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 6083 states have (on average 3.5025480848265658) internal successors, (21306), 6083 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 21306 transitions. [2021-03-10 22:21:11,375 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 21306 transitions. Word has length 47 [2021-03-10 22:21:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:11,375 INFO L480 AbstractCegarLoop]: Abstraction has 6084 states and 21306 transitions. [2021-03-10 22:21:11,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 21306 transitions. [2021-03-10 22:21:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:11,382 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:11,383 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:11,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-10 22:21:11,383 INFO L428 AbstractCegarLoop]: === Iteration 79 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:11,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1350183558, now seen corresponding path program 79 times [2021-03-10 22:21:11,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:11,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205867186] [2021-03-10 22:21:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:11,686 INFO 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 22:21:11,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205867186] [2021-03-10 22:21:11,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:11,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:11,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936263308] [2021-03-10 22:21:11,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:11,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:11,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:11,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:11,687 INFO L87 Difference]: Start difference. First operand 6084 states and 21306 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:13,311 INFO L93 Difference]: Finished difference Result 7050 states and 24382 transitions. [2021-03-10 22:21:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 22:21:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:13,323 INFO L225 Difference]: With dead ends: 7050 [2021-03-10 22:21:13,324 INFO L226 Difference]: Without dead ends: 6961 [2021-03-10 22:21:13,324 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1070.3ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 22:21:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2021-03-10 22:21:13,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 6094. [2021-03-10 22:21:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6094 states, 6093 states have (on average 3.501230920728705) internal successors, (21333), 6093 states have internal predecessors, (21333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 21333 transitions. [2021-03-10 22:21:13,412 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 21333 transitions. Word has length 47 [2021-03-10 22:21:13,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:13,412 INFO L480 AbstractCegarLoop]: Abstraction has 6094 states and 21333 transitions. [2021-03-10 22:21:13,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:13,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 21333 transitions. [2021-03-10 22:21:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:13,420 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:13,420 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:13,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-10 22:21:13,420 INFO L428 AbstractCegarLoop]: === Iteration 80 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:13,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:13,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1673845382, now seen corresponding path program 80 times [2021-03-10 22:21:13,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:13,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524253245] [2021-03-10 22:21:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:13,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524253245] [2021-03-10 22:21:13,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:13,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:13,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421318847] [2021-03-10 22:21:13,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:13,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:13,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:13,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:13,723 INFO L87 Difference]: Start difference. First operand 6094 states and 21333 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:15,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:15,539 INFO L93 Difference]: Finished difference Result 6983 states and 24195 transitions. [2021-03-10 22:21:15,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 22:21:15,540 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:15,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:15,553 INFO L225 Difference]: With dead ends: 6983 [2021-03-10 22:21:15,553 INFO L226 Difference]: Without dead ends: 6862 [2021-03-10 22:21:15,553 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 1163.9ms TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 22:21:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6862 states. [2021-03-10 22:21:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6862 to 6090. [2021-03-10 22:21:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 6089 states have (on average 3.5012317293480044) internal successors, (21319), 6089 states have internal predecessors, (21319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 21319 transitions. [2021-03-10 22:21:15,640 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 21319 transitions. Word has length 47 [2021-03-10 22:21:15,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:15,640 INFO L480 AbstractCegarLoop]: Abstraction has 6090 states and 21319 transitions. [2021-03-10 22:21:15,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:15,641 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 21319 transitions. [2021-03-10 22:21:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:15,648 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:15,648 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:15,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-10 22:21:15,648 INFO L428 AbstractCegarLoop]: === Iteration 81 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:15,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:15,648 INFO L82 PathProgramCache]: Analyzing trace with hash 221237878, now seen corresponding path program 81 times [2021-03-10 22:21:15,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:15,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901309536] [2021-03-10 22:21:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:15,951 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 22:21:15,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901309536] [2021-03-10 22:21:15,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:15,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:15,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648204117] [2021-03-10 22:21:15,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:15,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:15,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:15,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:15,952 INFO L87 Difference]: Start difference. First operand 6090 states and 21319 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:18,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:18,168 INFO L93 Difference]: Finished difference Result 7659 states and 26554 transitions. [2021-03-10 22:21:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 22:21:18,169 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:18,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:18,183 INFO L225 Difference]: With dead ends: 7659 [2021-03-10 22:21:18,183 INFO L226 Difference]: Without dead ends: 7544 [2021-03-10 22:21:18,184 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1227.4ms TimeCoverageRelationStatistics Valid=243, Invalid=2513, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 22:21:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7544 states. [2021-03-10 22:21:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7544 to 6202. [2021-03-10 22:21:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 6201 states have (on average 3.4960490243509112) internal successors, (21679), 6201 states have internal predecessors, (21679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:18,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 21679 transitions. [2021-03-10 22:21:18,278 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 21679 transitions. Word has length 47 [2021-03-10 22:21:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:18,279 INFO L480 AbstractCegarLoop]: Abstraction has 6202 states and 21679 transitions. [2021-03-10 22:21:18,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 21679 transitions. [2021-03-10 22:21:18,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:18,286 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:18,286 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:18,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-10 22:21:18,287 INFO L428 AbstractCegarLoop]: === Iteration 82 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:18,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:18,287 INFO L82 PathProgramCache]: Analyzing trace with hash 520129556, now seen corresponding path program 82 times [2021-03-10 22:21:18,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:18,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744985550] [2021-03-10 22:21:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:18,592 INFO 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 22:21:18,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744985550] [2021-03-10 22:21:18,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:18,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:18,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075127627] [2021-03-10 22:21:18,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:18,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:18,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:18,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:18,593 INFO L87 Difference]: Start difference. First operand 6202 states and 21679 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:20,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:20,333 INFO L93 Difference]: Finished difference Result 7055 states and 24409 transitions. [2021-03-10 22:21:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 22:21:20,334 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:20,347 INFO L225 Difference]: With dead ends: 7055 [2021-03-10 22:21:20,347 INFO L226 Difference]: Without dead ends: 6958 [2021-03-10 22:21:20,347 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1081.7ms TimeCoverageRelationStatistics Valid=208, Invalid=2144, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 22:21:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2021-03-10 22:21:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 6216. [2021-03-10 22:21:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6216 states, 6215 states have (on average 3.4925181013676587) internal successors, (21706), 6215 states have internal predecessors, (21706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 21706 transitions. [2021-03-10 22:21:20,435 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 21706 transitions. Word has length 47 [2021-03-10 22:21:20,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:20,436 INFO L480 AbstractCegarLoop]: Abstraction has 6216 states and 21706 transitions. [2021-03-10 22:21:20,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 21706 transitions. [2021-03-10 22:21:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:20,443 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:20,443 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:20,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-10 22:21:20,444 INFO L428 AbstractCegarLoop]: === Iteration 83 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:20,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1205290954, now seen corresponding path program 83 times [2021-03-10 22:21:20,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:20,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293297298] [2021-03-10 22:21:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:20,751 INFO 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 22:21:20,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293297298] [2021-03-10 22:21:20,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:20,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:20,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370316755] [2021-03-10 22:21:20,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:20,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:20,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:20,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:20,752 INFO L87 Difference]: Start difference. First operand 6216 states and 21706 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:22,330 INFO L93 Difference]: Finished difference Result 7031 states and 24319 transitions. [2021-03-10 22:21:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:21:22,331 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:22,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:22,343 INFO L225 Difference]: With dead ends: 7031 [2021-03-10 22:21:22,343 INFO L226 Difference]: Without dead ends: 6926 [2021-03-10 22:21:22,344 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 977.9ms TimeCoverageRelationStatistics Valid=187, Invalid=1883, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 22:21:22,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2021-03-10 22:21:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6202. [2021-03-10 22:21:22,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 6201 states have (on average 3.4950814384776647) internal successors, (21673), 6201 states have internal predecessors, (21673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:22,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 21673 transitions. [2021-03-10 22:21:22,435 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 21673 transitions. Word has length 47 [2021-03-10 22:21:22,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:22,436 INFO L480 AbstractCegarLoop]: Abstraction has 6202 states and 21673 transitions. [2021-03-10 22:21:22,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:22,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 21673 transitions. [2021-03-10 22:21:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:22,444 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:22,444 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:22,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-10 22:21:22,444 INFO L428 AbstractCegarLoop]: === Iteration 84 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:22,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:22,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1114276790, now seen corresponding path program 84 times [2021-03-10 22:21:22,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:22,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249874964] [2021-03-10 22:21:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:22,757 INFO 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 22:21:22,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249874964] [2021-03-10 22:21:22,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:22,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:22,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817040835] [2021-03-10 22:21:22,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:22,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:22,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:22,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:22,758 INFO L87 Difference]: Start difference. First operand 6202 states and 21673 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:24,488 INFO L93 Difference]: Finished difference Result 6942 states and 24123 transitions. [2021-03-10 22:21:24,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 22:21:24,488 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:24,501 INFO L225 Difference]: With dead ends: 6942 [2021-03-10 22:21:24,501 INFO L226 Difference]: Without dead ends: 6853 [2021-03-10 22:21:24,501 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1153.6ms TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 22:21:24,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6853 states. [2021-03-10 22:21:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6853 to 6222. [2021-03-10 22:21:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6221 states have (on average 3.4950972512457805) internal successors, (21743), 6221 states have internal predecessors, (21743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 21743 transitions. [2021-03-10 22:21:24,628 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 21743 transitions. Word has length 47 [2021-03-10 22:21:24,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:24,628 INFO L480 AbstractCegarLoop]: Abstraction has 6222 states and 21743 transitions. [2021-03-10 22:21:24,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:24,628 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 21743 transitions. [2021-03-10 22:21:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:24,636 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:24,636 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:24,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-10 22:21:24,636 INFO L428 AbstractCegarLoop]: === Iteration 85 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:24,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:24,636 INFO L82 PathProgramCache]: Analyzing trace with hash 790614966, now seen corresponding path program 85 times [2021-03-10 22:21:24,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:24,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297595086] [2021-03-10 22:21:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:24,957 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 22:21:24,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297595086] [2021-03-10 22:21:24,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:24,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:24,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134774096] [2021-03-10 22:21:24,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:24,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:24,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:24,958 INFO L87 Difference]: Start difference. First operand 6222 states and 21743 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:26,731 INFO L93 Difference]: Finished difference Result 6970 states and 24211 transitions. [2021-03-10 22:21:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 22:21:26,732 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:26,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:26,744 INFO L225 Difference]: With dead ends: 6970 [2021-03-10 22:21:26,744 INFO L226 Difference]: Without dead ends: 6841 [2021-03-10 22:21:26,744 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1156.4ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 22:21:26,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6841 states. [2021-03-10 22:21:26,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6841 to 6224. [2021-03-10 22:21:26,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4934918849429537) internal successors, (21740), 6223 states have internal predecessors, (21740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:26,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21740 transitions. [2021-03-10 22:21:26,834 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21740 transitions. Word has length 47 [2021-03-10 22:21:26,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:26,835 INFO L480 AbstractCegarLoop]: Abstraction has 6224 states and 21740 transitions. [2021-03-10 22:21:26,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:26,835 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21740 transitions. [2021-03-10 22:21:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:26,843 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:26,843 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:26,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-10 22:21:26,843 INFO L428 AbstractCegarLoop]: === Iteration 86 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:26,843 INFO L82 PathProgramCache]: Analyzing trace with hash 846726420, now seen corresponding path program 86 times [2021-03-10 22:21:26,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:26,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130817249] [2021-03-10 22:21:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:27,166 INFO 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 22:21:27,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130817249] [2021-03-10 22:21:27,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:27,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:27,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928183557] [2021-03-10 22:21:27,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:27,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:27,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:27,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:27,167 INFO L87 Difference]: Start difference. First operand 6224 states and 21740 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:28,959 INFO L93 Difference]: Finished difference Result 6907 states and 24038 transitions. [2021-03-10 22:21:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 22:21:28,960 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:28,972 INFO L225 Difference]: With dead ends: 6907 [2021-03-10 22:21:28,972 INFO L226 Difference]: Without dead ends: 6746 [2021-03-10 22:21:28,972 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1161.6ms TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 22:21:28,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-03-10 22:21:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 6208. [2021-03-10 22:21:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6208 states, 6207 states have (on average 3.4941195424520703) internal successors, (21688), 6207 states have internal predecessors, (21688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 21688 transitions. [2021-03-10 22:21:29,062 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 21688 transitions. Word has length 47 [2021-03-10 22:21:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:29,062 INFO L480 AbstractCegarLoop]: Abstraction has 6208 states and 21688 transitions. [2021-03-10 22:21:29,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:29,062 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 21688 transitions. [2021-03-10 22:21:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:29,070 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:29,071 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:29,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-10 22:21:29,071 INFO L428 AbstractCegarLoop]: === Iteration 87 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:29,071 INFO L82 PathProgramCache]: Analyzing trace with hash -951643210, now seen corresponding path program 87 times [2021-03-10 22:21:29,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:29,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768463239] [2021-03-10 22:21:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:29,412 INFO 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 22:21:29,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768463239] [2021-03-10 22:21:29,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:29,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:29,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629787209] [2021-03-10 22:21:29,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:29,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:29,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:29,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:29,413 INFO L87 Difference]: Start difference. First operand 6208 states and 21688 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:32,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:32,258 INFO L93 Difference]: Finished difference Result 8257 states and 28674 transitions. [2021-03-10 22:21:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-03-10 22:21:32,259 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:32,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:32,273 INFO L225 Difference]: With dead ends: 8257 [2021-03-10 22:21:32,273 INFO L226 Difference]: Without dead ends: 8060 [2021-03-10 22:21:32,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1577.7ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 22:21:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2021-03-10 22:21:32,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 6144. [2021-03-10 22:21:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 3.49894188507244) internal successors, (21494), 6143 states have internal predecessors, (21494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21494 transitions. [2021-03-10 22:21:32,369 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21494 transitions. Word has length 47 [2021-03-10 22:21:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:32,369 INFO L480 AbstractCegarLoop]: Abstraction has 6144 states and 21494 transitions. [2021-03-10 22:21:32,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:32,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21494 transitions. [2021-03-10 22:21:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:32,376 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:32,376 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:32,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-10 22:21:32,377 INFO L428 AbstractCegarLoop]: === Iteration 88 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1726760812, now seen corresponding path program 88 times [2021-03-10 22:21:32,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:32,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570914771] [2021-03-10 22:21:32,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:32,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570914771] [2021-03-10 22:21:32,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:32,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:32,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950059167] [2021-03-10 22:21:32,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:32,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:32,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:32,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:32,705 INFO L87 Difference]: Start difference. First operand 6144 states and 21494 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:35,485 INFO L93 Difference]: Finished difference Result 8151 states and 28335 transitions. [2021-03-10 22:21:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 22:21:35,486 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:35,500 INFO L225 Difference]: With dead ends: 8151 [2021-03-10 22:21:35,500 INFO L226 Difference]: Without dead ends: 8056 [2021-03-10 22:21:35,501 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1521.8ms TimeCoverageRelationStatistics Valid=313, Invalid=3347, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 22:21:35,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2021-03-10 22:21:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 6132. [2021-03-10 22:21:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.500897080411026) internal successors, (21464), 6131 states have internal predecessors, (21464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21464 transitions. [2021-03-10 22:21:35,595 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21464 transitions. Word has length 47 [2021-03-10 22:21:35,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:35,595 INFO L480 AbstractCegarLoop]: Abstraction has 6132 states and 21464 transitions. [2021-03-10 22:21:35,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:35,595 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21464 transitions. [2021-03-10 22:21:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:35,603 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:35,603 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:35,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-10 22:21:35,603 INFO L428 AbstractCegarLoop]: === Iteration 89 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:35,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1427869134, now seen corresponding path program 89 times [2021-03-10 22:21:35,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:35,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938203489] [2021-03-10 22:21:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:35,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938203489] [2021-03-10 22:21:35,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:35,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:35,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697739661] [2021-03-10 22:21:35,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:35,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:35,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:35,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:35,972 INFO L87 Difference]: Start difference. First operand 6132 states and 21464 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:37,785 INFO L93 Difference]: Finished difference Result 7016 states and 24295 transitions. [2021-03-10 22:21:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 22:21:37,786 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:37,798 INFO L225 Difference]: With dead ends: 7016 [2021-03-10 22:21:37,798 INFO L226 Difference]: Without dead ends: 6919 [2021-03-10 22:21:37,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1184.6ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 22:21:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-03-10 22:21:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6144. [2021-03-10 22:21:37,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 3.4986163112485755) internal successors, (21492), 6143 states have internal predecessors, (21492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21492 transitions. [2021-03-10 22:21:37,889 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21492 transitions. Word has length 47 [2021-03-10 22:21:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:37,889 INFO L480 AbstractCegarLoop]: Abstraction has 6144 states and 21492 transitions. [2021-03-10 22:21:37,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21492 transitions. [2021-03-10 22:21:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:37,896 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:37,897 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:37,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-10 22:21:37,897 INFO L428 AbstractCegarLoop]: === Iteration 90 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:37,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1141677652, now seen corresponding path program 90 times [2021-03-10 22:21:37,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:37,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614500541] [2021-03-10 22:21:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:38,242 INFO 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 22:21:38,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614500541] [2021-03-10 22:21:38,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:38,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:38,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548418062] [2021-03-10 22:21:38,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:38,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:38,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:38,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:38,243 INFO L87 Difference]: Start difference. First operand 6144 states and 21492 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:39,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:39,978 INFO L93 Difference]: Finished difference Result 6992 states and 24205 transitions. [2021-03-10 22:21:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 22:21:39,978 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:39,991 INFO L225 Difference]: With dead ends: 6992 [2021-03-10 22:21:39,992 INFO L226 Difference]: Without dead ends: 6893 [2021-03-10 22:21:39,992 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 1107.9ms TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 22:21:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-03-10 22:21:40,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6136. [2021-03-10 22:21:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 6135 states have (on average 3.4999185004074977) internal successors, (21472), 6135 states have internal predecessors, (21472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 21472 transitions. [2021-03-10 22:21:40,083 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 21472 transitions. Word has length 47 [2021-03-10 22:21:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:40,083 INFO L480 AbstractCegarLoop]: Abstraction has 6136 states and 21472 transitions. [2021-03-10 22:21:40,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 21472 transitions. [2021-03-10 22:21:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:40,091 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:40,091 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:40,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-10 22:21:40,091 INFO L428 AbstractCegarLoop]: === Iteration 91 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:40,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:40,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2077545080, now seen corresponding path program 91 times [2021-03-10 22:21:40,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:40,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553293480] [2021-03-10 22:21:40,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:40,428 INFO 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 22:21:40,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553293480] [2021-03-10 22:21:40,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:40,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:40,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108235790] [2021-03-10 22:21:40,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:40,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:40,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:40,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:40,429 INFO L87 Difference]: Start difference. First operand 6136 states and 21472 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:42,313 INFO L93 Difference]: Finished difference Result 6771 states and 23602 transitions. [2021-03-10 22:21:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 22:21:42,314 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:42,326 INFO L225 Difference]: With dead ends: 6771 [2021-03-10 22:21:42,326 INFO L226 Difference]: Without dead ends: 6626 [2021-03-10 22:21:42,326 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1144.7ms TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 22:21:42,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2021-03-10 22:21:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 6148. [2021-03-10 22:21:42,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.497966487717586) internal successors, (21502), 6147 states have internal predecessors, (21502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21502 transitions. [2021-03-10 22:21:42,417 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21502 transitions. Word has length 47 [2021-03-10 22:21:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:42,417 INFO L480 AbstractCegarLoop]: Abstraction has 6148 states and 21502 transitions. [2021-03-10 22:21:42,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:42,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21502 transitions. [2021-03-10 22:21:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:42,425 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:42,425 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:42,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-10 22:21:42,425 INFO L428 AbstractCegarLoop]: === Iteration 92 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:42,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:42,425 INFO L82 PathProgramCache]: Analyzing trace with hash 273969510, now seen corresponding path program 92 times [2021-03-10 22:21:42,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:42,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033071807] [2021-03-10 22:21:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:42,765 INFO 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 22:21:42,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033071807] [2021-03-10 22:21:42,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:42,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:42,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211912062] [2021-03-10 22:21:42,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:42,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:42,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:42,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:42,766 INFO L87 Difference]: Start difference. First operand 6148 states and 21502 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:44,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:44,484 INFO L93 Difference]: Finished difference Result 6867 states and 23829 transitions. [2021-03-10 22:21:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 22:21:44,485 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:44,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:44,497 INFO L225 Difference]: With dead ends: 6867 [2021-03-10 22:21:44,497 INFO L226 Difference]: Without dead ends: 6770 [2021-03-10 22:21:44,497 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1080.7ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 22:21:44,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-03-10 22:21:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 6154. [2021-03-10 22:21:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 6153 states have (on average 3.49699333658378) internal successors, (21517), 6153 states have internal predecessors, (21517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 21517 transitions. [2021-03-10 22:21:44,582 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 21517 transitions. Word has length 47 [2021-03-10 22:21:44,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:44,582 INFO L480 AbstractCegarLoop]: Abstraction has 6154 states and 21517 transitions. [2021-03-10 22:21:44,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:44,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 21517 transitions. [2021-03-10 22:21:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:44,590 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:44,590 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:44,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-10 22:21:44,590 INFO L428 AbstractCegarLoop]: === Iteration 93 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:44,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:44,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1451451000, now seen corresponding path program 93 times [2021-03-10 22:21:44,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:44,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626434944] [2021-03-10 22:21:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:44,929 INFO 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 22:21:44,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626434944] [2021-03-10 22:21:44,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:44,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:21:44,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559359653] [2021-03-10 22:21:44,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:21:44,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:44,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:21:44,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:21:44,930 INFO L87 Difference]: Start difference. First operand 6154 states and 21517 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:46,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:46,622 INFO L93 Difference]: Finished difference Result 6768 states and 23524 transitions. [2021-03-10 22:21:46,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 22:21:46,623 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:46,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:46,635 INFO L225 Difference]: With dead ends: 6768 [2021-03-10 22:21:46,635 INFO L226 Difference]: Without dead ends: 6639 [2021-03-10 22:21:46,636 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1057.3ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:21:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-03-10 22:21:46,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6116. [2021-03-10 22:21:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 6115 states have (on average 3.504170073589534) internal successors, (21428), 6115 states have internal predecessors, (21428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 21428 transitions. [2021-03-10 22:21:46,725 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 21428 transitions. Word has length 47 [2021-03-10 22:21:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:46,725 INFO L480 AbstractCegarLoop]: Abstraction has 6116 states and 21428 transitions. [2021-03-10 22:21:46,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:46,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 21428 transitions. [2021-03-10 22:21:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:46,733 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:46,733 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:46,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-10 22:21:46,733 INFO L428 AbstractCegarLoop]: === Iteration 94 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:46,734 INFO L82 PathProgramCache]: Analyzing trace with hash 380026104, now seen corresponding path program 94 times [2021-03-10 22:21:46,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:46,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702984820] [2021-03-10 22:21:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:47,040 INFO 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 22:21:47,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702984820] [2021-03-10 22:21:47,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:47,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-10 22:21:47,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001551464] [2021-03-10 22:21:47,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 22:21:47,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:47,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 22:21:47,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:21:47,041 INFO L87 Difference]: Start difference. First operand 6116 states and 21428 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:48,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:48,478 INFO L93 Difference]: Finished difference Result 6669 states and 23239 transitions. [2021-03-10 22:21:48,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 22:21:48,479 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:48,491 INFO L225 Difference]: With dead ends: 6669 [2021-03-10 22:21:48,491 INFO L226 Difference]: Without dead ends: 6532 [2021-03-10 22:21:48,491 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 864.4ms TimeCoverageRelationStatistics Valid=146, Invalid=1260, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 22:21:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-03-10 22:21:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6132. [2021-03-10 22:21:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.5028543467623554) internal successors, (21476), 6131 states have internal predecessors, (21476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21476 transitions. [2021-03-10 22:21:48,576 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21476 transitions. Word has length 47 [2021-03-10 22:21:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:48,576 INFO L480 AbstractCegarLoop]: Abstraction has 6132 states and 21476 transitions. [2021-03-10 22:21:48,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21476 transitions. [2021-03-10 22:21:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:48,583 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:48,583 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:48,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-10 22:21:48,584 INFO L428 AbstractCegarLoop]: === Iteration 95 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:48,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1897722326, now seen corresponding path program 95 times [2021-03-10 22:21:48,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:48,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324889876] [2021-03-10 22:21:48,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:48,910 INFO 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 22:21:48,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324889876] [2021-03-10 22:21:48,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:48,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:21:48,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737267951] [2021-03-10 22:21:48,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:21:48,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:48,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:21:48,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:21:48,912 INFO L87 Difference]: Start difference. First operand 6132 states and 21476 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:50,489 INFO L93 Difference]: Finished difference Result 6728 states and 23398 transitions. [2021-03-10 22:21:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 22:21:50,490 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:50,502 INFO L225 Difference]: With dead ends: 6728 [2021-03-10 22:21:50,503 INFO L226 Difference]: Without dead ends: 6639 [2021-03-10 22:21:50,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 957.7ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 22:21:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-03-10 22:21:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6196. [2021-03-10 22:21:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.5015334947538337) internal successors, (21692), 6195 states have internal predecessors, (21692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21692 transitions. [2021-03-10 22:21:50,590 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21692 transitions. Word has length 47 [2021-03-10 22:21:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:50,590 INFO L480 AbstractCegarLoop]: Abstraction has 6196 states and 21692 transitions. [2021-03-10 22:21:50,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:50,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21692 transitions. [2021-03-10 22:21:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:50,598 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:50,598 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:50,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-10 22:21:50,598 INFO L428 AbstractCegarLoop]: === Iteration 96 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:50,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:50,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1963215624, now seen corresponding path program 96 times [2021-03-10 22:21:50,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:50,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72925919] [2021-03-10 22:21:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:50,907 INFO 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 22:21:50,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72925919] [2021-03-10 22:21:50,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:50,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:21:50,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194673340] [2021-03-10 22:21:50,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:21:50,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:50,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:21:50,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:21:50,909 INFO L87 Difference]: Start difference. First operand 6196 states and 21692 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:52,478 INFO L93 Difference]: Finished difference Result 6637 states and 23127 transitions. [2021-03-10 22:21:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 22:21:52,479 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:52,491 INFO L225 Difference]: With dead ends: 6637 [2021-03-10 22:21:52,491 INFO L226 Difference]: Without dead ends: 6508 [2021-03-10 22:21:52,492 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 908.4ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 22:21:52,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-03-10 22:21:52,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6196. [2021-03-10 22:21:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4976594027441483) internal successors, (21668), 6195 states have internal predecessors, (21668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21668 transitions. [2021-03-10 22:21:52,580 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21668 transitions. Word has length 47 [2021-03-10 22:21:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:52,580 INFO L480 AbstractCegarLoop]: Abstraction has 6196 states and 21668 transitions. [2021-03-10 22:21:52,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:52,580 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21668 transitions. [2021-03-10 22:21:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:52,588 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:52,589 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:52,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-10 22:21:52,589 INFO L428 AbstractCegarLoop]: === Iteration 97 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:52,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:52,589 INFO L82 PathProgramCache]: Analyzing trace with hash -401782138, now seen corresponding path program 97 times [2021-03-10 22:21:52,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:52,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791790398] [2021-03-10 22:21:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:52,952 INFO 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 22:21:52,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791790398] [2021-03-10 22:21:52,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:52,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:21:52,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420760282] [2021-03-10 22:21:52,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:21:52,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:52,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:21:52,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:21:52,953 INFO L87 Difference]: Start difference. First operand 6196 states and 21668 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:54,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:54,552 INFO L93 Difference]: Finished difference Result 6680 states and 23238 transitions. [2021-03-10 22:21:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 22:21:54,553 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:54,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:54,564 INFO L225 Difference]: With dead ends: 6680 [2021-03-10 22:21:54,564 INFO L226 Difference]: Without dead ends: 6591 [2021-03-10 22:21:54,565 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1034.7ms TimeCoverageRelationStatistics Valid=171, Invalid=1551, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 22:21:54,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-03-10 22:21:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6196. [2021-03-10 22:21:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4976594027441483) internal successors, (21668), 6195 states have internal predecessors, (21668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21668 transitions. [2021-03-10 22:21:54,651 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21668 transitions. Word has length 47 [2021-03-10 22:21:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:54,652 INFO L480 AbstractCegarLoop]: Abstraction has 6196 states and 21668 transitions. [2021-03-10 22:21:54,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21668 transitions. [2021-03-10 22:21:54,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:54,660 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:54,660 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:54,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-10 22:21:54,660 INFO L428 AbstractCegarLoop]: === Iteration 98 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:54,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:54,660 INFO L82 PathProgramCache]: Analyzing trace with hash 32247208, now seen corresponding path program 98 times [2021-03-10 22:21:54,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:54,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560863684] [2021-03-10 22:21:54,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:54,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:54,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560863684] [2021-03-10 22:21:54,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:54,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:21:54,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7749819] [2021-03-10 22:21:54,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:21:54,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:54,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:21:54,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:21:54,986 INFO L87 Difference]: Start difference. First operand 6196 states and 21668 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:56,554 INFO L93 Difference]: Finished difference Result 6688 states and 23266 transitions. [2021-03-10 22:21:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 22:21:56,555 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:56,567 INFO L225 Difference]: With dead ends: 6688 [2021-03-10 22:21:56,567 INFO L226 Difference]: Without dead ends: 6583 [2021-03-10 22:21:56,567 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 975.4ms TimeCoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 22:21:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-03-10 22:21:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6212. [2021-03-10 22:21:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.4963773949444534) internal successors, (21716), 6211 states have internal predecessors, (21716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21716 transitions. [2021-03-10 22:21:56,653 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21716 transitions. Word has length 47 [2021-03-10 22:21:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:56,654 INFO L480 AbstractCegarLoop]: Abstraction has 6212 states and 21716 transitions. [2021-03-10 22:21:56,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21716 transitions. [2021-03-10 22:21:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:56,661 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:56,661 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:56,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-10 22:21:56,662 INFO L428 AbstractCegarLoop]: === Iteration 99 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:56,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:56,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1305180916, now seen corresponding path program 99 times [2021-03-10 22:21:56,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:56,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612856275] [2021-03-10 22:21:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:57,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612856275] [2021-03-10 22:21:57,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:57,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:21:57,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930975493] [2021-03-10 22:21:57,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:21:57,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:57,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:21:57,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:21:57,043 INFO L87 Difference]: Start difference. First operand 6212 states and 21716 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:58,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:58,639 INFO L93 Difference]: Finished difference Result 6605 states and 23015 transitions. [2021-03-10 22:21:58,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 22:21:58,640 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:21:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:58,652 INFO L225 Difference]: With dead ends: 6605 [2021-03-10 22:21:58,652 INFO L226 Difference]: Without dead ends: 6352 [2021-03-10 22:21:58,653 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1012.2ms TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 22:21:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-03-10 22:21:58,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 6104. [2021-03-10 22:21:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 3.5058168114042276) internal successors, (21396), 6103 states have internal predecessors, (21396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 21396 transitions. [2021-03-10 22:21:58,772 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 21396 transitions. Word has length 47 [2021-03-10 22:21:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:58,772 INFO L480 AbstractCegarLoop]: Abstraction has 6104 states and 21396 transitions. [2021-03-10 22:21:58,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:58,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 21396 transitions. [2021-03-10 22:21:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:21:58,779 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:58,779 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:58,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-10 22:21:58,780 INFO L428 AbstractCegarLoop]: === Iteration 100 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:21:58,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:58,780 INFO L82 PathProgramCache]: Analyzing trace with hash 851399496, now seen corresponding path program 100 times [2021-03-10 22:21:58,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:58,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325383258] [2021-03-10 22:21:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:59,086 INFO 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 22:21:59,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325383258] [2021-03-10 22:21:59,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:59,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-10 22:21:59,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052352984] [2021-03-10 22:21:59,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 22:21:59,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:59,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 22:21:59,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:21:59,087 INFO L87 Difference]: Start difference. First operand 6104 states and 21396 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:00,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:00,544 INFO L93 Difference]: Finished difference Result 6681 states and 23265 transitions. [2021-03-10 22:22:00,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 22:22:00,546 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:00,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:00,559 INFO L225 Difference]: With dead ends: 6681 [2021-03-10 22:22:00,559 INFO L226 Difference]: Without dead ends: 6544 [2021-03-10 22:22:00,559 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 876.6ms TimeCoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 22:22:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2021-03-10 22:22:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6160. [2021-03-10 22:22:00,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 3.5012177301509984) internal successors, (21564), 6159 states have internal predecessors, (21564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:00,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21564 transitions. [2021-03-10 22:22:00,658 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21564 transitions. Word has length 47 [2021-03-10 22:22:00,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:00,658 INFO L480 AbstractCegarLoop]: Abstraction has 6160 states and 21564 transitions. [2021-03-10 22:22:00,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21564 transitions. [2021-03-10 22:22:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:00,667 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:00,667 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:00,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-10 22:22:00,668 INFO L428 AbstractCegarLoop]: === Iteration 101 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:00,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:00,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1568967496, now seen corresponding path program 101 times [2021-03-10 22:22:00,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:00,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608716677] [2021-03-10 22:22:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:01,027 INFO 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 22:22:01,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608716677] [2021-03-10 22:22:01,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:01,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:01,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370825872] [2021-03-10 22:22:01,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:01,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:01,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:01,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:01,028 INFO L87 Difference]: Start difference. First operand 6160 states and 21564 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:02,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:02,664 INFO L93 Difference]: Finished difference Result 6740 states and 23424 transitions. [2021-03-10 22:22:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 22:22:02,665 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:02,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:02,677 INFO L225 Difference]: With dead ends: 6740 [2021-03-10 22:22:02,677 INFO L226 Difference]: Without dead ends: 6651 [2021-03-10 22:22:02,677 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 996.2ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 22:22:02,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-03-10 22:22:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 6224. [2021-03-10 22:22:02,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4999196529005303) internal successors, (21780), 6223 states have internal predecessors, (21780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21780 transitions. [2021-03-10 22:22:02,766 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21780 transitions. Word has length 47 [2021-03-10 22:22:02,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:02,766 INFO L480 AbstractCegarLoop]: Abstraction has 6224 states and 21780 transitions. [2021-03-10 22:22:02,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21780 transitions. [2021-03-10 22:22:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:02,774 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:02,774 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:22:02,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-10 22:22:02,774 INFO L428 AbstractCegarLoop]: === Iteration 102 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:02,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:02,775 INFO L82 PathProgramCache]: Analyzing trace with hash -115495190, now seen corresponding path program 102 times [2021-03-10 22:22:02,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:02,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498642958] [2021-03-10 22:22:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:03,154 INFO 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 22:22:03,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498642958] [2021-03-10 22:22:03,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:03,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:03,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378105817] [2021-03-10 22:22:03,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:03,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:03,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:03,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:03,155 INFO L87 Difference]: Start difference. First operand 6224 states and 21780 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:04,723 INFO L93 Difference]: Finished difference Result 6649 states and 23153 transitions. [2021-03-10 22:22:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 22:22:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:04,736 INFO L225 Difference]: With dead ends: 6649 [2021-03-10 22:22:04,736 INFO L226 Difference]: Without dead ends: 6520 [2021-03-10 22:22:04,736 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 962.2ms TimeCoverageRelationStatistics Valid=141, Invalid=1341, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 22:22:04,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-03-10 22:22:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 6224. [2021-03-10 22:22:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4960629921259843) internal successors, (21756), 6223 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21756 transitions. [2021-03-10 22:22:04,852 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21756 transitions. Word has length 47 [2021-03-10 22:22:04,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:04,852 INFO L480 AbstractCegarLoop]: Abstraction has 6224 states and 21756 transitions. [2021-03-10 22:22:04,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21756 transitions. [2021-03-10 22:22:04,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:04,860 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:04,860 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:22:04,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-10 22:22:04,860 INFO L428 AbstractCegarLoop]: === Iteration 103 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:04,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:04,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1928645226, now seen corresponding path program 103 times [2021-03-10 22:22:04,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:04,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667827386] [2021-03-10 22:22:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:05,198 INFO 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 22:22:05,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667827386] [2021-03-10 22:22:05,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:05,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:05,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985074414] [2021-03-10 22:22:05,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:05,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:05,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:05,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:05,199 INFO L87 Difference]: Start difference. First operand 6224 states and 21756 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:06,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:06,840 INFO L93 Difference]: Finished difference Result 6692 states and 23264 transitions. [2021-03-10 22:22:06,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 22:22:06,841 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:06,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:06,853 INFO L225 Difference]: With dead ends: 6692 [2021-03-10 22:22:06,853 INFO L226 Difference]: Without dead ends: 6603 [2021-03-10 22:22:06,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1008.4ms TimeCoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 22:22:06,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2021-03-10 22:22:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6224. [2021-03-10 22:22:06,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4960629921259843) internal successors, (21756), 6223 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21756 transitions. [2021-03-10 22:22:06,941 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21756 transitions. Word has length 47 [2021-03-10 22:22:06,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:06,941 INFO L480 AbstractCegarLoop]: Abstraction has 6224 states and 21756 transitions. [2021-03-10 22:22:06,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:06,941 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21756 transitions. [2021-03-10 22:22:06,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:06,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:06,949 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:22:06,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-10 22:22:06,949 INFO L428 AbstractCegarLoop]: === Iteration 104 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:06,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:06,949 INFO L82 PathProgramCache]: Analyzing trace with hash 244182540, now seen corresponding path program 104 times [2021-03-10 22:22:06,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:06,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226890269] [2021-03-10 22:22:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:07,297 INFO 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 22:22:07,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226890269] [2021-03-10 22:22:07,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:07,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:07,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915297036] [2021-03-10 22:22:07,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:07,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:07,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:07,298 INFO L87 Difference]: Start difference. First operand 6224 states and 21756 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:08,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:08,835 INFO L93 Difference]: Finished difference Result 6700 states and 23292 transitions. [2021-03-10 22:22:08,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 22:22:08,837 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:08,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:08,848 INFO L225 Difference]: With dead ends: 6700 [2021-03-10 22:22:08,849 INFO L226 Difference]: Without dead ends: 6595 [2021-03-10 22:22:08,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 972.8ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 22:22:08,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2021-03-10 22:22:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6240. [2021-03-10 22:22:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6240 states, 6239 states have (on average 3.494790831864081) internal successors, (21804), 6239 states have internal predecessors, (21804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 21804 transitions. [2021-03-10 22:22:08,939 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 21804 transitions. Word has length 47 [2021-03-10 22:22:08,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:08,939 INFO L480 AbstractCegarLoop]: Abstraction has 6240 states and 21804 transitions. [2021-03-10 22:22:08,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 21804 transitions. [2021-03-10 22:22:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:08,947 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:08,947 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:08,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-10 22:22:08,947 INFO L428 AbstractCegarLoop]: === Iteration 105 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:08,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:08,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1572879960, now seen corresponding path program 105 times [2021-03-10 22:22:08,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:08,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453576039] [2021-03-10 22:22:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:09,299 INFO 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 22:22:09,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453576039] [2021-03-10 22:22:09,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:09,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:09,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251791032] [2021-03-10 22:22:09,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:09,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:09,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:09,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:09,300 INFO L87 Difference]: Start difference. First operand 6240 states and 21804 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:10,865 INFO L93 Difference]: Finished difference Result 6593 states and 22965 transitions. [2021-03-10 22:22:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-10 22:22:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:10,878 INFO L225 Difference]: With dead ends: 6593 [2021-03-10 22:22:10,878 INFO L226 Difference]: Without dead ends: 6320 [2021-03-10 22:22:10,878 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 941.1ms TimeCoverageRelationStatistics Valid=137, Invalid=1269, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 22:22:10,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-03-10 22:22:10,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 6112. [2021-03-10 22:22:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 6111 states have (on average 3.503845524464081) internal successors, (21412), 6111 states have internal predecessors, (21412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 21412 transitions. [2021-03-10 22:22:10,996 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 21412 transitions. Word has length 47 [2021-03-10 22:22:10,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:10,997 INFO L480 AbstractCegarLoop]: Abstraction has 6112 states and 21412 transitions. [2021-03-10 22:22:10,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 21412 transitions. [2021-03-10 22:22:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:11,004 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:11,005 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, 1] [2021-03-10 22:22:11,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-10 22:22:11,005 INFO L428 AbstractCegarLoop]: === Iteration 106 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:11,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:11,005 INFO L82 PathProgramCache]: Analyzing trace with hash 3597688, now seen corresponding path program 106 times [2021-03-10 22:22:11,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:11,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488604499] [2021-03-10 22:22:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:11,363 INFO 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 22:22:11,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488604499] [2021-03-10 22:22:11,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:11,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-10 22:22:11,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430943319] [2021-03-10 22:22:11,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 22:22:11,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:11,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 22:22:11,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:22:11,364 INFO L87 Difference]: Start difference. First operand 6112 states and 21412 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:13,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:13,026 INFO L93 Difference]: Finished difference Result 6837 states and 23807 transitions. [2021-03-10 22:22:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 22:22:13,027 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:13,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:13,038 INFO L225 Difference]: With dead ends: 6837 [2021-03-10 22:22:13,039 INFO L226 Difference]: Without dead ends: 6700 [2021-03-10 22:22:13,039 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1016.9ms TimeCoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 22:22:13,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-03-10 22:22:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 6132. [2021-03-10 22:22:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.5031805578209103) internal successors, (21478), 6131 states have internal predecessors, (21478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21478 transitions. [2021-03-10 22:22:13,126 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21478 transitions. Word has length 47 [2021-03-10 22:22:13,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:13,127 INFO L480 AbstractCegarLoop]: Abstraction has 6132 states and 21478 transitions. [2021-03-10 22:22:13,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21478 transitions. [2021-03-10 22:22:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:13,134 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:13,134 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:22:13,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-10 22:22:13,135 INFO L428 AbstractCegarLoop]: === Iteration 107 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:13,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:13,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1521293910, now seen corresponding path program 107 times [2021-03-10 22:22:13,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:13,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157427615] [2021-03-10 22:22:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:13,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157427615] [2021-03-10 22:22:13,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:13,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:13,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209913424] [2021-03-10 22:22:13,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:13,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:13,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:13,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:13,503 INFO L87 Difference]: Start difference. First operand 6132 states and 21478 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:15,334 INFO L93 Difference]: Finished difference Result 6896 states and 23966 transitions. [2021-03-10 22:22:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:22:15,335 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:15,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:15,348 INFO L225 Difference]: With dead ends: 6896 [2021-03-10 22:22:15,348 INFO L226 Difference]: Without dead ends: 6807 [2021-03-10 22:22:15,348 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1118.1ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 22:22:15,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2021-03-10 22:22:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 6196. [2021-03-10 22:22:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.501856335754641) internal successors, (21694), 6195 states have internal predecessors, (21694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21694 transitions. [2021-03-10 22:22:15,438 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21694 transitions. Word has length 47 [2021-03-10 22:22:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:15,439 INFO L480 AbstractCegarLoop]: Abstraction has 6196 states and 21694 transitions. [2021-03-10 22:22:15,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21694 transitions. [2021-03-10 22:22:15,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:15,447 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:15,447 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:15,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-10 22:22:15,447 INFO L428 AbstractCegarLoop]: === Iteration 108 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:15,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:15,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1955323256, now seen corresponding path program 108 times [2021-03-10 22:22:15,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:15,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423649243] [2021-03-10 22:22:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:15,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423649243] [2021-03-10 22:22:15,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:15,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:15,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389974501] [2021-03-10 22:22:15,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:15,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:15,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:15,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:15,838 INFO L87 Difference]: Start difference. First operand 6196 states and 21694 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:17,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:17,737 INFO L93 Difference]: Finished difference Result 6805 states and 23695 transitions. [2021-03-10 22:22:17,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 22:22:17,738 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:17,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:17,751 INFO L225 Difference]: With dead ends: 6805 [2021-03-10 22:22:17,751 INFO L226 Difference]: Without dead ends: 6676 [2021-03-10 22:22:17,751 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1103.8ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 22:22:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-03-10 22:22:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 6196. [2021-03-10 22:22:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4979822437449557) internal successors, (21670), 6195 states have internal predecessors, (21670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21670 transitions. [2021-03-10 22:22:17,838 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21670 transitions. Word has length 47 [2021-03-10 22:22:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:17,838 INFO L480 AbstractCegarLoop]: Abstraction has 6196 states and 21670 transitions. [2021-03-10 22:22:17,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21670 transitions. [2021-03-10 22:22:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:17,846 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:17,846 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:17,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-10 22:22:17,846 INFO L428 AbstractCegarLoop]: === Iteration 109 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash -778210554, now seen corresponding path program 109 times [2021-03-10 22:22:17,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:17,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569479554] [2021-03-10 22:22:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:18,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569479554] [2021-03-10 22:22:18,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:18,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:18,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910201677] [2021-03-10 22:22:18,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:18,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:18,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:18,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:18,205 INFO L87 Difference]: Start difference. First operand 6196 states and 21670 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:20,146 INFO L93 Difference]: Finished difference Result 6944 states and 24142 transitions. [2021-03-10 22:22:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:22:20,147 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:20,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:20,160 INFO L225 Difference]: With dead ends: 6944 [2021-03-10 22:22:20,160 INFO L226 Difference]: Without dead ends: 6855 [2021-03-10 22:22:20,160 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1178.1ms TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:22:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2021-03-10 22:22:20,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6196. [2021-03-10 22:22:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4979822437449557) internal successors, (21670), 6195 states have internal predecessors, (21670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21670 transitions. [2021-03-10 22:22:20,250 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21670 transitions. Word has length 47 [2021-03-10 22:22:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:20,250 INFO L480 AbstractCegarLoop]: Abstraction has 6196 states and 21670 transitions. [2021-03-10 22:22:20,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21670 transitions. [2021-03-10 22:22:20,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:20,258 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:20,258 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:20,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-10 22:22:20,258 INFO L428 AbstractCegarLoop]: === Iteration 110 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:20,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:20,258 INFO L82 PathProgramCache]: Analyzing trace with hash -344181208, now seen corresponding path program 110 times [2021-03-10 22:22:20,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:20,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971304435] [2021-03-10 22:22:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:20,640 INFO 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 22:22:20,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971304435] [2021-03-10 22:22:20,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:20,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:20,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482597520] [2021-03-10 22:22:20,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:20,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:20,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:20,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:20,641 INFO L87 Difference]: Start difference. First operand 6196 states and 21670 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:22,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:22,619 INFO L93 Difference]: Finished difference Result 6952 states and 24170 transitions. [2021-03-10 22:22:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:22:22,620 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:22,633 INFO L225 Difference]: With dead ends: 6952 [2021-03-10 22:22:22,633 INFO L226 Difference]: Without dead ends: 6847 [2021-03-10 22:22:22,634 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1184.5ms TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 22:22:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2021-03-10 22:22:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 6212. [2021-03-10 22:22:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.496699404282724) internal successors, (21718), 6211 states have internal predecessors, (21718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21718 transitions. [2021-03-10 22:22:22,723 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21718 transitions. Word has length 47 [2021-03-10 22:22:22,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:22,723 INFO L480 AbstractCegarLoop]: Abstraction has 6212 states and 21718 transitions. [2021-03-10 22:22:22,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21718 transitions. [2021-03-10 22:22:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:22,731 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:22,732 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:22,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-10 22:22:22,732 INFO L428 AbstractCegarLoop]: === Iteration 111 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:22,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:22,732 INFO L82 PathProgramCache]: Analyzing trace with hash 928752500, now seen corresponding path program 111 times [2021-03-10 22:22:22,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:22,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905790237] [2021-03-10 22:22:22,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:23,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905790237] [2021-03-10 22:22:23,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:23,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:23,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642069277] [2021-03-10 22:22:23,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:23,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:23,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:23,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:23,152 INFO L87 Difference]: Start difference. First operand 6212 states and 21718 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:25,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:25,200 INFO L93 Difference]: Finished difference Result 6861 states and 23891 transitions. [2021-03-10 22:22:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 22:22:25,201 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:25,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:25,213 INFO L225 Difference]: With dead ends: 6861 [2021-03-10 22:22:25,213 INFO L226 Difference]: Without dead ends: 6636 [2021-03-10 22:22:25,214 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1237.9ms TimeCoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:22:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-03-10 22:22:25,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6132. [2021-03-10 22:22:25,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.500570869352471) internal successors, (21462), 6131 states have internal predecessors, (21462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:25,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21462 transitions. [2021-03-10 22:22:25,303 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21462 transitions. Word has length 47 [2021-03-10 22:22:25,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:25,303 INFO L480 AbstractCegarLoop]: Abstraction has 6132 states and 21462 transitions. [2021-03-10 22:22:25,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:25,303 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21462 transitions. [2021-03-10 22:22:25,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:25,311 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:25,311 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:25,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-10 22:22:25,311 INFO L428 AbstractCegarLoop]: === Iteration 112 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:25,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:25,312 INFO L82 PathProgramCache]: Analyzing trace with hash 818403224, now seen corresponding path program 112 times [2021-03-10 22:22:25,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:25,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632925233] [2021-03-10 22:22:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:25,715 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 22:22:25,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632925233] [2021-03-10 22:22:25,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:25,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:25,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556809221] [2021-03-10 22:22:25,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:25,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:25,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:25,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:25,716 INFO L87 Difference]: Start difference. First operand 6132 states and 21462 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:27,610 INFO L93 Difference]: Finished difference Result 6885 states and 23895 transitions. [2021-03-10 22:22:27,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 22:22:27,611 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:27,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:27,624 INFO L225 Difference]: With dead ends: 6885 [2021-03-10 22:22:27,624 INFO L226 Difference]: Without dead ends: 6748 [2021-03-10 22:22:27,624 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1161.1ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 22:22:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2021-03-10 22:22:27,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 6138. [2021-03-10 22:22:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 6137 states have (on average 3.500570311226984) internal successors, (21483), 6137 states have internal predecessors, (21483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21483 transitions. [2021-03-10 22:22:27,716 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21483 transitions. Word has length 47 [2021-03-10 22:22:27,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:27,716 INFO L480 AbstractCegarLoop]: Abstraction has 6138 states and 21483 transitions. [2021-03-10 22:22:27,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:27,716 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21483 transitions. [2021-03-10 22:22:27,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:27,724 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:27,724 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:27,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-10 22:22:27,724 INFO L428 AbstractCegarLoop]: === Iteration 113 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:27,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1958867850, now seen corresponding path program 113 times [2021-03-10 22:22:27,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:27,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115937785] [2021-03-10 22:22:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:28,154 INFO 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 22:22:28,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115937785] [2021-03-10 22:22:28,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:28,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:22:28,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204068475] [2021-03-10 22:22:28,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:22:28,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:28,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:22:28,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:22:28,155 INFO L87 Difference]: Start difference. First operand 6138 states and 21483 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:30,293 INFO L93 Difference]: Finished difference Result 7035 states and 24317 transitions. [2021-03-10 22:22:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:22:30,294 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:30,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:30,307 INFO L225 Difference]: With dead ends: 7035 [2021-03-10 22:22:30,308 INFO L226 Difference]: Without dead ends: 6946 [2021-03-10 22:22:30,308 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1331.1ms TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:22:30,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2021-03-10 22:22:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6138. [2021-03-10 22:22:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 6137 states have (on average 3.500570311226984) internal successors, (21483), 6137 states have internal predecessors, (21483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21483 transitions. [2021-03-10 22:22:30,401 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21483 transitions. Word has length 47 [2021-03-10 22:22:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:30,401 INFO L480 AbstractCegarLoop]: Abstraction has 6138 states and 21483 transitions. [2021-03-10 22:22:30,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:30,401 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21483 transitions. [2021-03-10 22:22:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:30,408 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:30,409 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:30,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-10 22:22:30,409 INFO L428 AbstractCegarLoop]: === Iteration 114 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:30,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:30,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1524838504, now seen corresponding path program 114 times [2021-03-10 22:22:30,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:30,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678164315] [2021-03-10 22:22:30,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:30,854 INFO 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 22:22:30,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678164315] [2021-03-10 22:22:30,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:30,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:22:30,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959162801] [2021-03-10 22:22:30,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:22:30,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:30,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:22:30,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:22:30,855 INFO L87 Difference]: Start difference. First operand 6138 states and 21483 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:33,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:33,327 INFO L93 Difference]: Finished difference Result 6944 states and 24046 transitions. [2021-03-10 22:22:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:22:33,329 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:33,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:33,341 INFO L225 Difference]: With dead ends: 6944 [2021-03-10 22:22:33,342 INFO L226 Difference]: Without dead ends: 6815 [2021-03-10 22:22:33,342 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1429.9ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:22:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-03-10 22:22:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 6138. [2021-03-10 22:22:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 6137 states have (on average 3.4995926348378688) internal successors, (21477), 6137 states have internal predecessors, (21477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21477 transitions. [2021-03-10 22:22:33,432 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21477 transitions. Word has length 47 [2021-03-10 22:22:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:33,432 INFO L480 AbstractCegarLoop]: Abstraction has 6138 states and 21477 transitions. [2021-03-10 22:22:33,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21477 transitions. [2021-03-10 22:22:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:33,439 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:33,439 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:33,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-10 22:22:33,439 INFO L428 AbstractCegarLoop]: === Iteration 115 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:33,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:33,440 INFO L82 PathProgramCache]: Analyzing trace with hash 984588342, now seen corresponding path program 115 times [2021-03-10 22:22:33,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:33,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981716427] [2021-03-10 22:22:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:33,850 INFO 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 22:22:33,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981716427] [2021-03-10 22:22:33,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:33,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:22:33,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219816297] [2021-03-10 22:22:33,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:22:33,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:33,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:22:33,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:22:33,851 INFO L87 Difference]: Start difference. First operand 6138 states and 21477 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:39,208 INFO L93 Difference]: Finished difference Result 9355 states and 32755 transitions. [2021-03-10 22:22:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 22:22:39,210 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:39,228 INFO L225 Difference]: With dead ends: 9355 [2021-03-10 22:22:39,228 INFO L226 Difference]: Without dead ends: 9218 [2021-03-10 22:22:39,229 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 2603.2ms TimeCoverageRelationStatistics Valid=404, Invalid=4152, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 22:22:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9218 states. [2021-03-10 22:22:39,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9218 to 6184. [2021-03-10 22:22:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6183 states have (on average 3.495390587093644) internal successors, (21612), 6183 states have internal predecessors, (21612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21612 transitions. [2021-03-10 22:22:39,386 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21612 transitions. Word has length 47 [2021-03-10 22:22:39,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:39,386 INFO L480 AbstractCegarLoop]: Abstraction has 6184 states and 21612 transitions. [2021-03-10 22:22:39,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21612 transitions. [2021-03-10 22:22:39,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:39,394 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:39,394 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, 1] [2021-03-10 22:22:39,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-10 22:22:39,394 INFO L428 AbstractCegarLoop]: === Iteration 116 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:39,395 INFO L82 PathProgramCache]: Analyzing trace with hash 971056920, now seen corresponding path program 116 times [2021-03-10 22:22:39,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:39,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727637470] [2021-03-10 22:22:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:39,904 INFO 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 22:22:39,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727637470] [2021-03-10 22:22:39,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:39,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:22:39,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924745455] [2021-03-10 22:22:39,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:22:39,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:39,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:22:39,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:22:39,905 INFO L87 Difference]: Start difference. First operand 6184 states and 21612 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:46,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:46,018 INFO L93 Difference]: Finished difference Result 10525 states and 37110 transitions. [2021-03-10 22:22:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 22:22:46,020 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:46,041 INFO L225 Difference]: With dead ends: 10525 [2021-03-10 22:22:46,041 INFO L226 Difference]: Without dead ends: 10436 [2021-03-10 22:22:46,042 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 3299.5ms TimeCoverageRelationStatistics Valid=531, Invalid=5019, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 22:22:46,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10436 states. [2021-03-10 22:22:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10436 to 6188. [2021-03-10 22:22:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6188 states, 6187 states have (on average 3.4944237918215615) internal successors, (21620), 6187 states have internal predecessors, (21620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 21620 transitions. [2021-03-10 22:22:46,158 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 21620 transitions. Word has length 47 [2021-03-10 22:22:46,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:46,158 INFO L480 AbstractCegarLoop]: Abstraction has 6188 states and 21620 transitions. [2021-03-10 22:22:46,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:46,158 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 21620 transitions. [2021-03-10 22:22:46,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:46,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:46,166 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:46,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-10 22:22:46,166 INFO L428 AbstractCegarLoop]: === Iteration 117 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:46,167 INFO L82 PathProgramCache]: Analyzing trace with hash 120405012, now seen corresponding path program 117 times [2021-03-10 22:22:46,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:46,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050755619] [2021-03-10 22:22:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:46,631 INFO 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 22:22:46,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050755619] [2021-03-10 22:22:46,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:46,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:22:46,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236970144] [2021-03-10 22:22:46,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:22:46,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:46,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:22:46,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:22:46,632 INFO L87 Difference]: Start difference. First operand 6188 states and 21620 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:52,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:52,880 INFO L93 Difference]: Finished difference Result 10604 states and 37526 transitions. [2021-03-10 22:22:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 22:22:52,881 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:52,902 INFO L225 Difference]: With dead ends: 10604 [2021-03-10 22:22:52,902 INFO L226 Difference]: Without dead ends: 10497 [2021-03-10 22:22:52,903 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 3193.4ms TimeCoverageRelationStatistics Valid=484, Invalid=4628, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 22:22:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10497 states. [2021-03-10 22:22:52,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10497 to 6146. [2021-03-10 22:22:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 6145 states have (on average 3.497965825874695) internal successors, (21495), 6145 states have internal predecessors, (21495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 21495 transitions. [2021-03-10 22:22:53,014 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 21495 transitions. Word has length 47 [2021-03-10 22:22:53,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:53,014 INFO L480 AbstractCegarLoop]: Abstraction has 6146 states and 21495 transitions. [2021-03-10 22:22:53,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:53,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 21495 transitions. [2021-03-10 22:22:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:53,022 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:53,022 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:53,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-10 22:22:53,023 INFO L428 AbstractCegarLoop]: === Iteration 118 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:53,023 INFO L82 PathProgramCache]: Analyzing trace with hash 21038872, now seen corresponding path program 118 times [2021-03-10 22:22:53,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:53,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179862028] [2021-03-10 22:22:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:53,530 INFO 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 22:22:53,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179862028] [2021-03-10 22:22:53,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:53,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:22:53,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160535483] [2021-03-10 22:22:53,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:22:53,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:53,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:22:53,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:22:53,531 INFO L87 Difference]: Start difference. First operand 6146 states and 21495 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:56,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:56,101 INFO L93 Difference]: Finished difference Result 7096 states and 24509 transitions. [2021-03-10 22:22:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 22:22:56,103 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:56,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:56,116 INFO L225 Difference]: With dead ends: 7096 [2021-03-10 22:22:56,116 INFO L226 Difference]: Without dead ends: 7007 [2021-03-10 22:22:56,116 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1638.3ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 22:22:56,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-03-10 22:22:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6148. [2021-03-10 22:22:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.497966487717586) internal successors, (21502), 6147 states have internal predecessors, (21502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21502 transitions. [2021-03-10 22:22:56,264 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21502 transitions. Word has length 47 [2021-03-10 22:22:56,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:56,264 INFO L480 AbstractCegarLoop]: Abstraction has 6148 states and 21502 transitions. [2021-03-10 22:22:56,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:56,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21502 transitions. [2021-03-10 22:22:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:56,273 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:56,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:56,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-10 22:22:56,273 INFO L428 AbstractCegarLoop]: === Iteration 119 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:56,273 INFO L82 PathProgramCache]: Analyzing trace with hash -302622952, now seen corresponding path program 119 times [2021-03-10 22:22:56,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:56,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126585539] [2021-03-10 22:22:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:56,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126585539] [2021-03-10 22:22:56,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:56,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:22:56,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260575554] [2021-03-10 22:22:56,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:22:56,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:56,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:22:56,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:22:56,787 INFO L87 Difference]: Start difference. First operand 6148 states and 21502 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:59,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:59,382 INFO L93 Difference]: Finished difference Result 7104 states and 24537 transitions. [2021-03-10 22:22:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 22:22:59,384 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:22:59,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:59,397 INFO L225 Difference]: With dead ends: 7104 [2021-03-10 22:22:59,397 INFO L226 Difference]: Without dead ends: 6999 [2021-03-10 22:22:59,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1601.5ms TimeCoverageRelationStatistics Valid=191, Invalid=1879, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 22:22:59,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-03-10 22:22:59,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6148. [2021-03-10 22:22:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.4976411257523994) internal successors, (21500), 6147 states have internal predecessors, (21500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21500 transitions. [2021-03-10 22:22:59,490 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21500 transitions. Word has length 47 [2021-03-10 22:22:59,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:59,490 INFO L480 AbstractCegarLoop]: Abstraction has 6148 states and 21500 transitions. [2021-03-10 22:22:59,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:59,490 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21500 transitions. [2021-03-10 22:22:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:22:59,498 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:59,499 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:59,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-10 22:22:59,499 INFO L428 AbstractCegarLoop]: === Iteration 120 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:22:59,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:59,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1927389386, now seen corresponding path program 120 times [2021-03-10 22:22:59,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:59,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767654412] [2021-03-10 22:22:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:00,010 INFO 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 22:23:00,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767654412] [2021-03-10 22:23:00,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:00,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:00,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916428977] [2021-03-10 22:23:00,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:00,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:00,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:00,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:00,011 INFO L87 Difference]: Start difference. First operand 6148 states and 21500 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:03,582 INFO L93 Difference]: Finished difference Result 7685 states and 26629 transitions. [2021-03-10 22:23:03,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 22:23:03,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:03,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:03,600 INFO L225 Difference]: With dead ends: 7685 [2021-03-10 22:23:03,600 INFO L226 Difference]: Without dead ends: 7596 [2021-03-10 22:23:03,600 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1977.5ms TimeCoverageRelationStatistics Valid=225, Invalid=2225, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 22:23:03,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-03-10 22:23:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 6252. [2021-03-10 22:23:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6251 states have (on average 3.493201087825948) internal successors, (21836), 6251 states have internal predecessors, (21836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 21836 transitions. [2021-03-10 22:23:03,700 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 21836 transitions. Word has length 47 [2021-03-10 22:23:03,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:03,700 INFO L480 AbstractCegarLoop]: Abstraction has 6252 states and 21836 transitions. [2021-03-10 22:23:03,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 21836 transitions. [2021-03-10 22:23:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:03,709 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:03,709 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:03,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-10 22:23:03,709 INFO L428 AbstractCegarLoop]: === Iteration 121 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:03,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:03,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1592460308, now seen corresponding path program 121 times [2021-03-10 22:23:03,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:03,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439224471] [2021-03-10 22:23:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:04,232 INFO 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 22:23:04,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439224471] [2021-03-10 22:23:04,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:04,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:04,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622041428] [2021-03-10 22:23:04,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:04,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:04,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:04,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:04,233 INFO L87 Difference]: Start difference. First operand 6252 states and 21836 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:07,657 INFO L93 Difference]: Finished difference Result 7687 states and 26622 transitions. [2021-03-10 22:23:07,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 22:23:07,659 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:07,674 INFO L225 Difference]: With dead ends: 7687 [2021-03-10 22:23:07,674 INFO L226 Difference]: Without dead ends: 7592 [2021-03-10 22:23:07,674 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1803.4ms TimeCoverageRelationStatistics Valid=213, Invalid=2139, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 22:23:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2021-03-10 22:23:07,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6232. [2021-03-10 22:23:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 6231 states have (on average 3.4973519499277805) internal successors, (21792), 6231 states have internal predecessors, (21792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 21792 transitions. [2021-03-10 22:23:07,773 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 21792 transitions. Word has length 47 [2021-03-10 22:23:07,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:07,773 INFO L480 AbstractCegarLoop]: Abstraction has 6232 states and 21792 transitions. [2021-03-10 22:23:07,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 21792 transitions. [2021-03-10 22:23:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:07,781 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:07,781 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:23:07,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-10 22:23:07,781 INFO L428 AbstractCegarLoop]: === Iteration 122 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:07,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1891351986, now seen corresponding path program 122 times [2021-03-10 22:23:07,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:07,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205955057] [2021-03-10 22:23:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:08,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205955057] [2021-03-10 22:23:08,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:08,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:08,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125449414] [2021-03-10 22:23:08,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:08,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:08,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:08,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:08,306 INFO L87 Difference]: Start difference. First operand 6232 states and 21792 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:10,964 INFO L93 Difference]: Finished difference Result 7069 states and 24460 transitions. [2021-03-10 22:23:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:23:10,965 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:10,979 INFO L225 Difference]: With dead ends: 7069 [2021-03-10 22:23:10,979 INFO L226 Difference]: Without dead ends: 6972 [2021-03-10 22:23:10,979 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1539.5ms TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:23:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states. [2021-03-10 22:23:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 6246. [2021-03-10 22:23:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6246 states, 6245 states have (on average 3.4938350680544437) internal successors, (21819), 6245 states have internal predecessors, (21819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 21819 transitions. [2021-03-10 22:23:11,073 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 21819 transitions. Word has length 47 [2021-03-10 22:23:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:11,073 INFO L480 AbstractCegarLoop]: Abstraction has 6246 states and 21819 transitions. [2021-03-10 22:23:11,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 21819 transitions. [2021-03-10 22:23:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:11,081 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:11,081 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:11,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-10 22:23:11,082 INFO L428 AbstractCegarLoop]: === Iteration 123 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:11,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:11,082 INFO L82 PathProgramCache]: Analyzing trace with hash 165931476, now seen corresponding path program 123 times [2021-03-10 22:23:11,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:11,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807119533] [2021-03-10 22:23:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:11,616 INFO 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 22:23:11,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807119533] [2021-03-10 22:23:11,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:11,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:11,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605856525] [2021-03-10 22:23:11,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:11,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:11,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:11,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:11,617 INFO L87 Difference]: Start difference. First operand 6246 states and 21819 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:14,299 INFO L93 Difference]: Finished difference Result 7045 states and 24370 transitions. [2021-03-10 22:23:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:23:14,301 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:14,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:14,313 INFO L225 Difference]: With dead ends: 7045 [2021-03-10 22:23:14,313 INFO L226 Difference]: Without dead ends: 6940 [2021-03-10 22:23:14,313 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1541.8ms TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:23:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6940 states. [2021-03-10 22:23:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6940 to 6232. [2021-03-10 22:23:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 6231 states have (on average 3.4963890226287915) internal successors, (21786), 6231 states have internal predecessors, (21786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 21786 transitions. [2021-03-10 22:23:14,402 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 21786 transitions. Word has length 47 [2021-03-10 22:23:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:14,402 INFO L480 AbstractCegarLoop]: Abstraction has 6232 states and 21786 transitions. [2021-03-10 22:23:14,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 21786 transitions. [2021-03-10 22:23:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:14,410 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:14,410 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:14,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-10 22:23:14,410 INFO L428 AbstractCegarLoop]: === Iteration 124 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:14,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:14,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1809468076, now seen corresponding path program 124 times [2021-03-10 22:23:14,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:14,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151538160] [2021-03-10 22:23:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:14,938 INFO 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 22:23:14,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151538160] [2021-03-10 22:23:14,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:14,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:14,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274990216] [2021-03-10 22:23:14,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:14,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:14,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:14,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:14,939 INFO L87 Difference]: Start difference. First operand 6232 states and 21786 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:17,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:17,614 INFO L93 Difference]: Finished difference Result 6956 states and 24174 transitions. [2021-03-10 22:23:17,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 22:23:17,615 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:17,628 INFO L225 Difference]: With dead ends: 6956 [2021-03-10 22:23:17,628 INFO L226 Difference]: Without dead ends: 6867 [2021-03-10 22:23:17,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1744.3ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 22:23:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6867 states. [2021-03-10 22:23:17,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6867 to 6236. [2021-03-10 22:23:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 3.4963913392141137) internal successors, (21800), 6235 states have internal predecessors, (21800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 21800 transitions. [2021-03-10 22:23:17,717 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 21800 transitions. Word has length 47 [2021-03-10 22:23:17,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:17,717 INFO L480 AbstractCegarLoop]: Abstraction has 6236 states and 21800 transitions. [2021-03-10 22:23:17,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 21800 transitions. [2021-03-10 22:23:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:17,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:17,725 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:17,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-10 22:23:17,725 INFO L428 AbstractCegarLoop]: === Iteration 125 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2133129900, now seen corresponding path program 125 times [2021-03-10 22:23:17,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:17,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123409114] [2021-03-10 22:23:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:18,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123409114] [2021-03-10 22:23:18,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:18,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:18,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852937264] [2021-03-10 22:23:18,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:18,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:18,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:18,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:18,254 INFO L87 Difference]: Start difference. First operand 6236 states and 21800 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:21,000 INFO L93 Difference]: Finished difference Result 6964 states and 24202 transitions. [2021-03-10 22:23:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 22:23:21,002 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:21,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:21,016 INFO L225 Difference]: With dead ends: 6964 [2021-03-10 22:23:21,016 INFO L226 Difference]: Without dead ends: 6859 [2021-03-10 22:23:21,016 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1750.4ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 22:23:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2021-03-10 22:23:21,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 6252. [2021-03-10 22:23:21,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6251 states have (on average 3.495120780675092) internal successors, (21848), 6251 states have internal predecessors, (21848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 21848 transitions. [2021-03-10 22:23:21,111 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 21848 transitions. Word has length 47 [2021-03-10 22:23:21,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:21,111 INFO L480 AbstractCegarLoop]: Abstraction has 6252 states and 21848 transitions. [2021-03-10 22:23:21,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:21,111 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 21848 transitions. [2021-03-10 22:23:21,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:21,120 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:21,120 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:21,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-10 22:23:21,120 INFO L428 AbstractCegarLoop]: === Iteration 126 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:21,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:21,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2077018446, now seen corresponding path program 126 times [2021-03-10 22:23:21,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:21,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442910830] [2021-03-10 22:23:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:21,670 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 22:23:21,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442910830] [2021-03-10 22:23:21,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:21,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:21,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86861528] [2021-03-10 22:23:21,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:21,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:21,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:21,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:21,671 INFO L87 Difference]: Start difference. First operand 6252 states and 21848 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:24,706 INFO L93 Difference]: Finished difference Result 6933 states and 24139 transitions. [2021-03-10 22:23:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 22:23:24,708 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:24,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:24,722 INFO L225 Difference]: With dead ends: 6933 [2021-03-10 22:23:24,722 INFO L226 Difference]: Without dead ends: 6772 [2021-03-10 22:23:24,722 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1911.8ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 22:23:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2021-03-10 22:23:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6236. [2021-03-10 22:23:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 3.4957497995188453) internal successors, (21796), 6235 states have internal predecessors, (21796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:24,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 21796 transitions. [2021-03-10 22:23:24,812 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 21796 transitions. Word has length 47 [2021-03-10 22:23:24,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:24,812 INFO L480 AbstractCegarLoop]: Abstraction has 6236 states and 21796 transitions. [2021-03-10 22:23:24,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 21796 transitions. [2021-03-10 22:23:24,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:24,820 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:24,820 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:24,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-10 22:23:24,821 INFO L428 AbstractCegarLoop]: === Iteration 127 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:24,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:24,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1926959818, now seen corresponding path program 127 times [2021-03-10 22:23:24,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:24,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638142467] [2021-03-10 22:23:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:25,431 INFO 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 22:23:25,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638142467] [2021-03-10 22:23:25,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:25,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:25,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372067346] [2021-03-10 22:23:25,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:25,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:25,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:25,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:25,432 INFO L87 Difference]: Start difference. First operand 6236 states and 21796 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:28,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:28,347 INFO L93 Difference]: Finished difference Result 7096 states and 24537 transitions. [2021-03-10 22:23:28,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 22:23:28,349 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:28,362 INFO L225 Difference]: With dead ends: 7096 [2021-03-10 22:23:28,362 INFO L226 Difference]: Without dead ends: 7007 [2021-03-10 22:23:28,362 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1853.4ms TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 22:23:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-03-10 22:23:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6238. [2021-03-10 22:23:28,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 3.4957511624178292) internal successors, (21803), 6237 states have internal predecessors, (21803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 21803 transitions. [2021-03-10 22:23:28,456 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 21803 transitions. Word has length 47 [2021-03-10 22:23:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:28,456 INFO L480 AbstractCegarLoop]: Abstraction has 6238 states and 21803 transitions. [2021-03-10 22:23:28,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 21803 transitions. [2021-03-10 22:23:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:28,465 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:28,465 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:28,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-10 22:23:28,465 INFO L428 AbstractCegarLoop]: === Iteration 128 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:28,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:28,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2044345654, now seen corresponding path program 128 times [2021-03-10 22:23:28,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:28,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654412682] [2021-03-10 22:23:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:29,046 INFO 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 22:23:29,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654412682] [2021-03-10 22:23:29,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:29,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:29,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223743395] [2021-03-10 22:23:29,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:29,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:29,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:29,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:29,047 INFO L87 Difference]: Start difference. First operand 6238 states and 21803 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:31,899 INFO L93 Difference]: Finished difference Result 7104 states and 24565 transitions. [2021-03-10 22:23:31,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 22:23:31,901 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:31,916 INFO L225 Difference]: With dead ends: 7104 [2021-03-10 22:23:31,916 INFO L226 Difference]: Without dead ends: 6999 [2021-03-10 22:23:31,916 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1823.7ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 22:23:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-03-10 22:23:32,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6238. [2021-03-10 22:23:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 3.4954304954304956) internal successors, (21801), 6237 states have internal predecessors, (21801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 21801 transitions. [2021-03-10 22:23:32,053 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 21801 transitions. Word has length 47 [2021-03-10 22:23:32,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:32,053 INFO L480 AbstractCegarLoop]: Abstraction has 6238 states and 21801 transitions. [2021-03-10 22:23:32,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 21801 transitions. [2021-03-10 22:23:32,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:32,062 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:32,062 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:32,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-10 22:23:32,062 INFO L428 AbstractCegarLoop]: === Iteration 129 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:32,063 INFO L82 PathProgramCache]: Analyzing trace with hash 419579220, now seen corresponding path program 129 times [2021-03-10 22:23:32,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:32,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930014855] [2021-03-10 22:23:32,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:32,667 INFO 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 22:23:32,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930014855] [2021-03-10 22:23:32,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:32,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:32,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107142323] [2021-03-10 22:23:32,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:32,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:32,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:32,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:32,668 INFO L87 Difference]: Start difference. First operand 6238 states and 21801 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:37,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:37,182 INFO L93 Difference]: Finished difference Result 8205 states and 28472 transitions. [2021-03-10 22:23:37,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 22:23:37,184 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:37,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:37,199 INFO L225 Difference]: With dead ends: 8205 [2021-03-10 22:23:37,199 INFO L226 Difference]: Without dead ends: 8100 [2021-03-10 22:23:37,200 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2281.8ms TimeCoverageRelationStatistics Valid=250, Invalid=2506, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 22:23:37,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2021-03-10 22:23:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 6184. [2021-03-10 22:23:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6183 states have (on average 3.4957140546660197) internal successors, (21614), 6183 states have internal predecessors, (21614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21614 transitions. [2021-03-10 22:23:37,300 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21614 transitions. Word has length 47 [2021-03-10 22:23:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:37,300 INFO L480 AbstractCegarLoop]: Abstraction has 6184 states and 21614 transitions. [2021-03-10 22:23:37,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21614 transitions. [2021-03-10 22:23:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:37,308 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:37,308 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:37,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-10 22:23:37,308 INFO L428 AbstractCegarLoop]: === Iteration 130 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:37,309 INFO L82 PathProgramCache]: Analyzing trace with hash -355538382, now seen corresponding path program 130 times [2021-03-10 22:23:37,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:37,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515940495] [2021-03-10 22:23:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:37,879 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 22:23:37,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515940495] [2021-03-10 22:23:37,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:37,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:37,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149571397] [2021-03-10 22:23:37,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:37,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:37,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:37,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:37,880 INFO L87 Difference]: Start difference. First operand 6184 states and 21614 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:42,246 INFO L93 Difference]: Finished difference Result 8191 states and 28417 transitions. [2021-03-10 22:23:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-10 22:23:42,248 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:42,264 INFO L225 Difference]: With dead ends: 8191 [2021-03-10 22:23:42,265 INFO L226 Difference]: Without dead ends: 8096 [2021-03-10 22:23:42,265 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 2157.8ms TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 22:23:42,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2021-03-10 22:23:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 6148. [2021-03-10 22:23:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.498291849682772) internal successors, (21504), 6147 states have internal predecessors, (21504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:42,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21504 transitions. [2021-03-10 22:23:42,396 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21504 transitions. Word has length 47 [2021-03-10 22:23:42,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:42,396 INFO L480 AbstractCegarLoop]: Abstraction has 6148 states and 21504 transitions. [2021-03-10 22:23:42,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:42,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21504 transitions. [2021-03-10 22:23:42,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:42,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:42,404 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:23:42,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-10 22:23:42,404 INFO L428 AbstractCegarLoop]: === Iteration 131 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:42,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:42,404 INFO L82 PathProgramCache]: Analyzing trace with hash -56646704, now seen corresponding path program 131 times [2021-03-10 22:23:42,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:42,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241323021] [2021-03-10 22:23:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:42,992 INFO 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 22:23:42,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241323021] [2021-03-10 22:23:42,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:42,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:42,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649317268] [2021-03-10 22:23:42,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:42,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:42,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:42,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:42,993 INFO L87 Difference]: Start difference. First operand 6148 states and 21504 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:45,929 INFO L93 Difference]: Finished difference Result 7016 states and 24273 transitions. [2021-03-10 22:23:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 22:23:45,931 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:45,944 INFO L225 Difference]: With dead ends: 7016 [2021-03-10 22:23:45,944 INFO L226 Difference]: Without dead ends: 6919 [2021-03-10 22:23:45,945 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1818.7ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:23:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-03-10 22:23:46,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6160. [2021-03-10 22:23:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 3.496022081506738) internal successors, (21532), 6159 states have internal predecessors, (21532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21532 transitions. [2021-03-10 22:23:46,039 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21532 transitions. Word has length 47 [2021-03-10 22:23:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:46,039 INFO L480 AbstractCegarLoop]: Abstraction has 6160 states and 21532 transitions. [2021-03-10 22:23:46,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21532 transitions. [2021-03-10 22:23:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:46,047 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:46,047 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:23:46,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-10 22:23:46,047 INFO L428 AbstractCegarLoop]: === Iteration 132 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:46,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1782067214, now seen corresponding path program 132 times [2021-03-10 22:23:46,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:46,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721329662] [2021-03-10 22:23:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:46,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721329662] [2021-03-10 22:23:46,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:46,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:46,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989435367] [2021-03-10 22:23:46,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:46,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:46,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:46,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:46,647 INFO L87 Difference]: Start difference. First operand 6160 states and 21532 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:49,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:49,669 INFO L93 Difference]: Finished difference Result 6992 states and 24183 transitions. [2021-03-10 22:23:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 22:23:49,672 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:49,685 INFO L225 Difference]: With dead ends: 6992 [2021-03-10 22:23:49,685 INFO L226 Difference]: Without dead ends: 6893 [2021-03-10 22:23:49,686 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1785.0ms TimeCoverageRelationStatistics Valid=174, Invalid=1718, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 22:23:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-03-10 22:23:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6152. [2021-03-10 22:23:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6152 states, 6151 states have (on average 3.4973175093480733) internal successors, (21512), 6151 states have internal predecessors, (21512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 21512 transitions. [2021-03-10 22:23:49,777 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 21512 transitions. Word has length 47 [2021-03-10 22:23:49,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:49,777 INFO L480 AbstractCegarLoop]: Abstraction has 6152 states and 21512 transitions. [2021-03-10 22:23:49,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:49,777 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 21512 transitions. [2021-03-10 22:23:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:49,786 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:49,786 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:49,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-10 22:23:49,786 INFO L428 AbstractCegarLoop]: === Iteration 133 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:49,786 INFO L82 PathProgramCache]: Analyzing trace with hash -706322650, now seen corresponding path program 133 times [2021-03-10 22:23:49,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:49,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527457221] [2021-03-10 22:23:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:50,407 INFO 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 22:23:50,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527457221] [2021-03-10 22:23:50,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:50,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:50,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512259672] [2021-03-10 22:23:50,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:50,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:50,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:50,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:50,408 INFO L87 Difference]: Start difference. First operand 6152 states and 21512 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:53,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:53,340 INFO L93 Difference]: Finished difference Result 6747 states and 23504 transitions. [2021-03-10 22:23:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 22:23:53,342 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:53,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:53,354 INFO L225 Difference]: With dead ends: 6747 [2021-03-10 22:23:53,354 INFO L226 Difference]: Without dead ends: 6602 [2021-03-10 22:23:53,354 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1843.7ms TimeCoverageRelationStatistics Valid=186, Invalid=1794, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 22:23:53,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2021-03-10 22:23:53,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 6164. [2021-03-10 22:23:53,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6164 states, 6163 states have (on average 3.495375628752231) internal successors, (21542), 6163 states have internal predecessors, (21542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6164 states to 6164 states and 21542 transitions. [2021-03-10 22:23:53,441 INFO L78 Accepts]: Start accepts. Automaton has 6164 states and 21542 transitions. Word has length 47 [2021-03-10 22:23:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:53,441 INFO L480 AbstractCegarLoop]: Abstraction has 6164 states and 21542 transitions. [2021-03-10 22:23:53,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:53,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6164 states and 21542 transitions. [2021-03-10 22:23:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:53,449 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:53,449 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:53,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-10 22:23:53,450 INFO L428 AbstractCegarLoop]: === Iteration 134 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:53,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:53,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1645191940, now seen corresponding path program 134 times [2021-03-10 22:23:53,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:53,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944968874] [2021-03-10 22:23:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:54,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944968874] [2021-03-10 22:23:54,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:54,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:54,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793634847] [2021-03-10 22:23:54,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:54,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:54,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:54,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:54,051 INFO L87 Difference]: Start difference. First operand 6164 states and 21542 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:56,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:56,902 INFO L93 Difference]: Finished difference Result 6867 states and 23807 transitions. [2021-03-10 22:23:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 22:23:56,904 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:23:56,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:56,916 INFO L225 Difference]: With dead ends: 6867 [2021-03-10 22:23:56,917 INFO L226 Difference]: Without dead ends: 6770 [2021-03-10 22:23:56,917 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1728.1ms TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 22:23:56,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-03-10 22:23:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 6170. [2021-03-10 22:23:56,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6170 states, 6169 states have (on average 3.4944075214783594) internal successors, (21557), 6169 states have internal predecessors, (21557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 21557 transitions. [2021-03-10 22:23:57,008 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 21557 transitions. Word has length 47 [2021-03-10 22:23:57,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:57,008 INFO L480 AbstractCegarLoop]: Abstraction has 6170 states and 21557 transitions. [2021-03-10 22:23:57,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 21557 transitions. [2021-03-10 22:23:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:23:57,016 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:57,016 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:23:57,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-10 22:23:57,017 INFO L428 AbstractCegarLoop]: === Iteration 135 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:23:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash -80228570, now seen corresponding path program 135 times [2021-03-10 22:23:57,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:57,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859361021] [2021-03-10 22:23:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:57,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859361021] [2021-03-10 22:23:57,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:57,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:23:57,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087603572] [2021-03-10 22:23:57,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:23:57,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:57,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:23:57,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:23:57,626 INFO L87 Difference]: Start difference. First operand 6170 states and 21557 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:00,549 INFO L93 Difference]: Finished difference Result 6768 states and 23502 transitions. [2021-03-10 22:24:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 22:24:00,551 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:24:00,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:00,564 INFO L225 Difference]: With dead ends: 6768 [2021-03-10 22:24:00,564 INFO L226 Difference]: Without dead ends: 6639 [2021-03-10 22:24:00,564 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1722.0ms TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 22:24:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-03-10 22:24:00,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6132. [2021-03-10 22:24:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.501549502528136) internal successors, (21468), 6131 states have internal predecessors, (21468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21468 transitions. [2021-03-10 22:24:00,654 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21468 transitions. Word has length 47 [2021-03-10 22:24:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:00,655 INFO L480 AbstractCegarLoop]: Abstraction has 6132 states and 21468 transitions. [2021-03-10 22:24:00,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21468 transitions. [2021-03-10 22:24:00,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:24:00,662 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:00,663 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:24:00,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-10 22:24:00,663 INFO L428 AbstractCegarLoop]: === Iteration 136 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:24:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:00,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1751248534, now seen corresponding path program 136 times [2021-03-10 22:24:00,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:00,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941317973] [2021-03-10 22:24:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:01,211 INFO 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 22:24:01,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941317973] [2021-03-10 22:24:01,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:01,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-10 22:24:01,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077548231] [2021-03-10 22:24:01,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 22:24:01,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:01,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 22:24:01,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:24:01,212 INFO L87 Difference]: Start difference. First operand 6132 states and 21468 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:03,834 INFO L93 Difference]: Finished difference Result 6669 states and 23217 transitions. [2021-03-10 22:24:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 22:24:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:24:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:03,850 INFO L225 Difference]: With dead ends: 6669 [2021-03-10 22:24:03,850 INFO L226 Difference]: Without dead ends: 6532 [2021-03-10 22:24:03,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1542.8ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 22:24:03,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-03-10 22:24:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6148. [2021-03-10 22:24:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.5002440214738897) internal successors, (21516), 6147 states have internal predecessors, (21516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21516 transitions. [2021-03-10 22:24:03,941 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21516 transitions. Word has length 47 [2021-03-10 22:24:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:03,941 INFO L480 AbstractCegarLoop]: Abstraction has 6148 states and 21516 transitions. [2021-03-10 22:24:03,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21516 transitions. [2021-03-10 22:24:03,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:24:03,950 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:03,950 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:03,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-10 22:24:03,950 INFO L428 AbstractCegarLoop]: === Iteration 137 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:24:03,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:03,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1026022540, now seen corresponding path program 137 times [2021-03-10 22:24:03,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:03,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808710673] [2021-03-10 22:24:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:04,526 INFO 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 22:24:04,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808710673] [2021-03-10 22:24:04,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:04,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:24:04,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498856542] [2021-03-10 22:24:04,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:24:04,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:04,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:24:04,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:24:04,527 INFO L87 Difference]: Start difference. First operand 6148 states and 21516 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:07,248 INFO L93 Difference]: Finished difference Result 6728 states and 23376 transitions. [2021-03-10 22:24:07,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 22:24:07,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:24:07,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:07,263 INFO L225 Difference]: With dead ends: 6728 [2021-03-10 22:24:07,263 INFO L226 Difference]: Without dead ends: 6639 [2021-03-10 22:24:07,264 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1687.5ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 22:24:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-03-10 22:24:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6212. [2021-03-10 22:24:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.49895346965062) internal successors, (21732), 6211 states have internal predecessors, (21732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:07,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21732 transitions. [2021-03-10 22:24:07,353 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21732 transitions. Word has length 47 [2021-03-10 22:24:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:07,353 INFO L480 AbstractCegarLoop]: Abstraction has 6212 states and 21732 transitions. [2021-03-10 22:24:07,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21732 transitions. [2021-03-10 22:24:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:24:07,361 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:07,361 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:07,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-10 22:24:07,362 INFO L428 AbstractCegarLoop]: === Iteration 138 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:24:07,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:07,362 INFO L82 PathProgramCache]: Analyzing trace with hash -591993194, now seen corresponding path program 138 times [2021-03-10 22:24:07,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:07,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050951949] [2021-03-10 22:24:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:07,935 INFO 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 22:24:07,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050951949] [2021-03-10 22:24:07,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:07,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:24:07,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205694311] [2021-03-10 22:24:07,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:24:07,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:07,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:24:07,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:24:07,936 INFO L87 Difference]: Start difference. First operand 6212 states and 21732 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:10,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:10,714 INFO L93 Difference]: Finished difference Result 6637 states and 23105 transitions. [2021-03-10 22:24:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 22:24:10,717 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:24:10,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:10,730 INFO L225 Difference]: With dead ends: 6637 [2021-03-10 22:24:10,730 INFO L226 Difference]: Without dead ends: 6508 [2021-03-10 22:24:10,731 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1658.7ms TimeCoverageRelationStatistics Valid=151, Invalid=1409, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 22:24:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-03-10 22:24:10,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6212. [2021-03-10 22:24:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.49508935759137) internal successors, (21708), 6211 states have internal predecessors, (21708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21708 transitions. [2021-03-10 22:24:10,824 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21708 transitions. Word has length 47 [2021-03-10 22:24:10,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:10,824 INFO L480 AbstractCegarLoop]: Abstraction has 6212 states and 21708 transitions. [2021-03-10 22:24:10,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21708 transitions. [2021-03-10 22:24:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:24:10,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:10,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:10,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-10 22:24:10,833 INFO L428 AbstractCegarLoop]: === Iteration 139 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:24:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:10,833 INFO L82 PathProgramCache]: Analyzing trace with hash 969440292, now seen corresponding path program 139 times [2021-03-10 22:24:10,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:10,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079515953] [2021-03-10 22:24:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:11,452 INFO 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 22:24:11,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079515953] [2021-03-10 22:24:11,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:11,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:24:11,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168789785] [2021-03-10 22:24:11,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:24:11,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:11,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:24:11,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:24:11,454 INFO L87 Difference]: Start difference. First operand 6212 states and 21708 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:14,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:14,266 INFO L93 Difference]: Finished difference Result 6680 states and 23216 transitions. [2021-03-10 22:24:14,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 22:24:14,268 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:24:14,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:14,281 INFO L225 Difference]: With dead ends: 6680 [2021-03-10 22:24:14,281 INFO L226 Difference]: Without dead ends: 6591 [2021-03-10 22:24:14,281 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1806.8ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 22:24:14,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-03-10 22:24:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6212. [2021-03-10 22:24:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.49508935759137) internal successors, (21708), 6211 states have internal predecessors, (21708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21708 transitions. [2021-03-10 22:24:14,372 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21708 transitions. Word has length 47 [2021-03-10 22:24:14,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:14,372 INFO L480 AbstractCegarLoop]: Abstraction has 6212 states and 21708 transitions. [2021-03-10 22:24:14,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21708 transitions. [2021-03-10 22:24:14,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:24:14,380 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:14,380 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:14,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-10 22:24:14,380 INFO L428 AbstractCegarLoop]: === Iteration 140 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:24:14,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:14,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1403469638, now seen corresponding path program 140 times [2021-03-10 22:24:14,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:14,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622864893] [2021-03-10 22:24:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:24:14,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622864893] [2021-03-10 22:24:14,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:14,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:24:14,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538739878] [2021-03-10 22:24:14,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:24:14,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:14,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:24:14,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:24:14,976 INFO L87 Difference]: Start difference. First operand 6212 states and 21708 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:17,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:17,702 INFO L93 Difference]: Finished difference Result 6688 states and 23244 transitions. [2021-03-10 22:24:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 22:24:17,704 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:24:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:17,717 INFO L225 Difference]: With dead ends: 6688 [2021-03-10 22:24:17,717 INFO L226 Difference]: Without dead ends: 6583 [2021-03-10 22:24:17,717 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1711.0ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 22:24:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-03-10 22:24:17,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6228. [2021-03-10 22:24:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6228 states, 6227 states have (on average 3.4938172474706923) internal successors, (21756), 6227 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 21756 transitions. [2021-03-10 22:24:17,807 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 21756 transitions. Word has length 47 [2021-03-10 22:24:17,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:17,807 INFO L480 AbstractCegarLoop]: Abstraction has 6228 states and 21756 transitions. [2021-03-10 22:24:17,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 21756 transitions. [2021-03-10 22:24:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:24:17,815 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:17,815 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:17,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-10 22:24:17,815 INFO L428 AbstractCegarLoop]: === Iteration 141 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:24:17,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:17,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1618563950, now seen corresponding path program 141 times [2021-03-10 22:24:17,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:17,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479411097] [2021-03-10 22:24:17,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:18,408 INFO 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 22:24:18,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479411097] [2021-03-10 22:24:18,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:18,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:24:18,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235932493] [2021-03-10 22:24:18,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:24:18,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:18,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:24:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:24:18,409 INFO L87 Difference]: Start difference. First operand 6228 states and 21756 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:21,079 INFO L93 Difference]: Finished difference Result 6581 states and 22917 transitions. [2021-03-10 22:24:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 22:24:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:24:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:21,093 INFO L225 Difference]: With dead ends: 6581 [2021-03-10 22:24:21,094 INFO L226 Difference]: Without dead ends: 6312 [2021-03-10 22:24:21,094 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1602.2ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 22:24:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6312 states. [2021-03-10 22:24:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6312 to 6104. [2021-03-10 22:24:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 3.5045059806652468) internal successors, (21388), 6103 states have internal predecessors, (21388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 21388 transitions. [2021-03-10 22:24:21,184 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 21388 transitions. Word has length 47 [2021-03-10 22:24:21,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:21,184 INFO L480 AbstractCegarLoop]: Abstraction has 6104 states and 21388 transitions. [2021-03-10 22:24:21,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 21388 transitions. [2021-03-10 22:24:21,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:24:21,192 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:21,192 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:21,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-10 22:24:21,192 INFO L428 AbstractCegarLoop]: === Iteration 142 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:24:21,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:21,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1913602850, now seen corresponding path program 142 times [2021-03-10 22:24:21,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:21,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303102971] [2021-03-10 22:24:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:21,814 INFO 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 22:24:21,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303102971] [2021-03-10 22:24:21,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:21,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:24:21,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568661306] [2021-03-10 22:24:21,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:24:21,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:21,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:24:21,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:24:21,815 INFO L87 Difference]: Start difference. First operand 6104 states and 21388 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:31,150 INFO L93 Difference]: Finished difference Result 10135 states and 35578 transitions. [2021-03-10 22:24:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-03-10 22:24:31,152 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:24:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:31,174 INFO L225 Difference]: With dead ends: 10135 [2021-03-10 22:24:31,174 INFO L226 Difference]: Without dead ends: 9908 [2021-03-10 22:24:31,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 4570.1ms TimeCoverageRelationStatistics Valid=518, Invalid=5334, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 22:24:31,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2021-03-10 22:24:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 6307. [2021-03-10 22:24:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6307 states, 6306 states have (on average 3.5041230574056454) internal successors, (22097), 6306 states have internal predecessors, (22097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 22097 transitions. [2021-03-10 22:24:31,294 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 22097 transitions. Word has length 47 [2021-03-10 22:24:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:31,294 INFO L480 AbstractCegarLoop]: Abstraction has 6307 states and 22097 transitions. [2021-03-10 22:24:31,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:31,294 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 22097 transitions. [2021-03-10 22:24:31,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:24:31,303 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:31,303 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:31,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-10 22:24:31,303 INFO L428 AbstractCegarLoop]: === Iteration 143 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:24:31,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:31,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1598110108, now seen corresponding path program 143 times [2021-03-10 22:24:31,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:31,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815711966] [2021-03-10 22:24:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:31,945 INFO 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 22:24:31,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815711966] [2021-03-10 22:24:31,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:31,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:24:31,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710519471] [2021-03-10 22:24:31,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:24:31,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:31,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:24:31,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:24:31,946 INFO L87 Difference]: Start difference. First operand 6307 states and 22097 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:48,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:48,567 INFO L93 Difference]: Finished difference Result 12884 states and 45400 transitions. [2021-03-10 22:24:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-03-10 22:24:48,570 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:24:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:48,597 INFO L225 Difference]: With dead ends: 12884 [2021-03-10 22:24:48,597 INFO L226 Difference]: Without dead ends: 12525 [2021-03-10 22:24:48,599 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5304 ImplicationChecksByTransitivity, 9066.1ms TimeCoverageRelationStatistics Valid=1263, Invalid=13743, Unknown=0, NotChecked=0, Total=15006 [2021-03-10 22:24:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12525 states. [2021-03-10 22:24:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12525 to 7156. [2021-03-10 22:24:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7156 states, 7155 states have (on average 3.527183787561146) internal successors, (25237), 7155 states have internal predecessors, (25237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7156 states to 7156 states and 25237 transitions. [2021-03-10 22:24:48,788 INFO L78 Accepts]: Start accepts. Automaton has 7156 states and 25237 transitions. Word has length 47 [2021-03-10 22:24:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:48,789 INFO L480 AbstractCegarLoop]: Abstraction has 7156 states and 25237 transitions. [2021-03-10 22:24:48,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7156 states and 25237 transitions. [2021-03-10 22:24:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:24:48,798 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:48,798 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:48,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-10 22:24:48,798 INFO L428 AbstractCegarLoop]: === Iteration 144 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:24:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:48,799 INFO L82 PathProgramCache]: Analyzing trace with hash 747458200, now seen corresponding path program 144 times [2021-03-10 22:24:48,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:48,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711461911] [2021-03-10 22:24:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:24:49,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711461911] [2021-03-10 22:24:49,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:49,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:24:49,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151206593] [2021-03-10 22:24:49,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:24:49,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:49,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:24:49,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:24:49,513 INFO L87 Difference]: Start difference. First operand 7156 states and 25237 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:25:04,401 INFO L93 Difference]: Finished difference Result 12739 states and 45281 transitions. [2021-03-10 22:25:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-03-10 22:25:04,404 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:25:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:25:04,432 INFO L225 Difference]: With dead ends: 12739 [2021-03-10 22:25:04,432 INFO L226 Difference]: Without dead ends: 12536 [2021-03-10 22:25:04,433 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4008 ImplicationChecksByTransitivity, 7904.3ms TimeCoverageRelationStatistics Valid=943, Invalid=10829, Unknown=0, NotChecked=0, Total=11772 [2021-03-10 22:25:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12536 states. [2021-03-10 22:25:04,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12536 to 7188. [2021-03-10 22:25:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7187 states have (on average 3.5301238347015444) internal successors, (25371), 7187 states have internal predecessors, (25371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:04,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 25371 transitions. [2021-03-10 22:25:04,578 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 25371 transitions. Word has length 47 [2021-03-10 22:25:04,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:25:04,578 INFO L480 AbstractCegarLoop]: Abstraction has 7188 states and 25371 transitions. [2021-03-10 22:25:04,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:04,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 25371 transitions. [2021-03-10 22:25:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:25:04,589 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:25:04,589 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:04,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-03-10 22:25:04,589 INFO L428 AbstractCegarLoop]: === Iteration 145 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:25:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:25:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1371701544, now seen corresponding path program 145 times [2021-03-10 22:25:04,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:25:04,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094194648] [2021-03-10 22:25:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:25:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:25:05,301 INFO 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 22:25:05,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094194648] [2021-03-10 22:25:05,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:25:05,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-10 22:25:05,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540878714] [2021-03-10 22:25:05,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 22:25:05,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:25:05,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 22:25:05,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:25:05,302 INFO L87 Difference]: Start difference. First operand 7188 states and 25371 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:15,221 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:25:18,060 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-03-10 22:25:20,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:25:20,978 INFO L93 Difference]: Finished difference Result 11886 states and 41418 transitions. [2021-03-10 22:25:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-03-10 22:25:20,980 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:25:20,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:25:21,003 INFO L225 Difference]: With dead ends: 11886 [2021-03-10 22:25:21,004 INFO L226 Difference]: Without dead ends: 11431 [2021-03-10 22:25:21,004 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 8162.0ms TimeCoverageRelationStatistics Valid=883, Invalid=9623, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 22:25:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11431 states. [2021-03-10 22:25:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11431 to 7463. [2021-03-10 22:25:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7463 states, 7462 states have (on average 3.528142589118199) internal successors, (26327), 7462 states have internal predecessors, (26327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 26327 transitions. [2021-03-10 22:25:21,143 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 26327 transitions. Word has length 47 [2021-03-10 22:25:21,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:25:21,143 INFO L480 AbstractCegarLoop]: Abstraction has 7463 states and 26327 transitions. [2021-03-10 22:25:21,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 26327 transitions. [2021-03-10 22:25:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:25:21,153 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:25:21,153 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:25:21,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-03-10 22:25:21,153 INFO L428 AbstractCegarLoop]: === Iteration 146 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:25:21,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:25:21,153 INFO L82 PathProgramCache]: Analyzing trace with hash 944391290, now seen corresponding path program 146 times [2021-03-10 22:25:21,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:25:21,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752973677] [2021-03-10 22:25:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:25:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:25:21,871 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 22:25:21,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752973677] [2021-03-10 22:25:21,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:25:21,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:25:21,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491678589] [2021-03-10 22:25:21,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:25:21,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:25:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:25:21,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:25:21,872 INFO L87 Difference]: Start difference. First operand 7463 states and 26327 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:30,834 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-03-10 22:25:31,788 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2021-03-10 22:25:34,164 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 22:25:35,141 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2021-03-10 22:25:35,634 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 22:25:37,809 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-03-10 22:25:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:25:41,760 INFO L93 Difference]: Finished difference Result 13404 states and 47111 transitions. [2021-03-10 22:25:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-03-10 22:25:41,764 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:25:41,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:25:41,794 INFO L225 Difference]: With dead ends: 13404 [2021-03-10 22:25:41,794 INFO L226 Difference]: Without dead ends: 13078 [2021-03-10 22:25:41,796 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 10265.7ms TimeCoverageRelationStatistics Valid=1198, Invalid=13564, Unknown=0, NotChecked=0, Total=14762 [2021-03-10 22:25:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13078 states. [2021-03-10 22:25:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13078 to 7625. [2021-03-10 22:25:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7625 states, 7624 states have (on average 3.536332633788038) internal successors, (26961), 7624 states have internal predecessors, (26961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7625 states to 7625 states and 26961 transitions. [2021-03-10 22:25:41,954 INFO L78 Accepts]: Start accepts. Automaton has 7625 states and 26961 transitions. Word has length 47 [2021-03-10 22:25:41,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:25:41,954 INFO L480 AbstractCegarLoop]: Abstraction has 7625 states and 26961 transitions. [2021-03-10 22:25:41,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 7625 states and 26961 transitions. [2021-03-10 22:25:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:25:41,966 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:25:41,966 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:41,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-03-10 22:25:41,966 INFO L428 AbstractCegarLoop]: === Iteration 147 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:25:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:25:41,966 INFO L82 PathProgramCache]: Analyzing trace with hash 93739382, now seen corresponding path program 147 times [2021-03-10 22:25:41,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:25:41,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750158309] [2021-03-10 22:25:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:25:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:25:42,750 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 22:25:42,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750158309] [2021-03-10 22:25:42,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:25:42,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:25:42,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131569304] [2021-03-10 22:25:42,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:25:42,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:25:42,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:25:42,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:25:42,751 INFO L87 Difference]: Start difference. First operand 7625 states and 26961 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:49,156 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-03-10 22:25:52,060 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2021-03-10 22:25:52,986 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 22:25:55,259 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-03-10 22:25:55,911 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-03-10 22:25:57,824 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2021-03-10 22:26:02,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:26:02,092 INFO L93 Difference]: Finished difference Result 13323 states and 47094 transitions. [2021-03-10 22:26:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-03-10 22:26:02,095 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:26:02,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:26:02,127 INFO L225 Difference]: With dead ends: 13323 [2021-03-10 22:26:02,127 INFO L226 Difference]: Without dead ends: 13076 [2021-03-10 22:26:02,129 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4525 ImplicationChecksByTransitivity, 9493.2ms TimeCoverageRelationStatistics Valid=1082, Invalid=12028, Unknown=0, NotChecked=0, Total=13110 [2021-03-10 22:26:02,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13076 states. [2021-03-10 22:26:02,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13076 to 7557. [2021-03-10 22:26:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7557 states, 7556 states have (on average 3.5428798305982) internal successors, (26770), 7556 states have internal predecessors, (26770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 26770 transitions. [2021-03-10 22:26:02,290 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 26770 transitions. Word has length 47 [2021-03-10 22:26:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:26:02,290 INFO L480 AbstractCegarLoop]: Abstraction has 7557 states and 26770 transitions. [2021-03-10 22:26:02,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 26770 transitions. [2021-03-10 22:26:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:26:02,301 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:26:02,301 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:26:02,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-03-10 22:26:02,301 INFO L428 AbstractCegarLoop]: === Iteration 148 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:26:02,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:26:02,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1813193950, now seen corresponding path program 148 times [2021-03-10 22:26:02,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:26:02,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104135922] [2021-03-10 22:26:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:26:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:26:03,169 INFO 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 22:26:03,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104135922] [2021-03-10 22:26:03,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:26:03,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:26:03,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066979913] [2021-03-10 22:26:03,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:26:03,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:26:03,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:26:03,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:26:03,170 INFO L87 Difference]: Start difference. First operand 7557 states and 26770 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:07,171 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2021-03-10 22:26:08,123 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-03-10 22:26:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:26:16,515 INFO L93 Difference]: Finished difference Result 12055 states and 42495 transitions. [2021-03-10 22:26:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-03-10 22:26:16,518 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:26:16,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:26:16,541 INFO L225 Difference]: With dead ends: 12055 [2021-03-10 22:26:16,541 INFO L226 Difference]: Without dead ends: 11928 [2021-03-10 22:26:16,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 6411.3ms TimeCoverageRelationStatistics Valid=605, Invalid=6705, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 22:26:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2021-03-10 22:26:16,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 7585. [2021-03-10 22:26:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 7584 states have (on average 3.539820675105485) internal successors, (26846), 7584 states have internal predecessors, (26846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 26846 transitions. [2021-03-10 22:26:16,682 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 26846 transitions. Word has length 47 [2021-03-10 22:26:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:26:16,682 INFO L480 AbstractCegarLoop]: Abstraction has 7585 states and 26846 transitions. [2021-03-10 22:26:16,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:16,682 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 26846 transitions. [2021-03-10 22:26:16,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:26:16,693 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:26:16,693 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:16,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-03-10 22:26:16,693 INFO L428 AbstractCegarLoop]: === Iteration 149 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:26:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:26:16,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1029939612, now seen corresponding path program 149 times [2021-03-10 22:26:16,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:26:16,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142713252] [2021-03-10 22:26:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:26:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:26:17,545 INFO 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 22:26:17,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142713252] [2021-03-10 22:26:17,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:26:17,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:26:17,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820371730] [2021-03-10 22:26:17,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:26:17,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:26:17,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:26:17,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:26:17,546 INFO L87 Difference]: Start difference. First operand 7585 states and 26846 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:19,952 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2021-03-10 22:26:21,305 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2021-03-10 22:26:22,177 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2021-03-10 22:26:26,453 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-03-10 22:26:27,391 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2021-03-10 22:26:29,661 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 22:26:30,292 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-03-10 22:26:30,715 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2021-03-10 22:26:32,522 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2021-03-10 22:26:33,879 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2021-03-10 22:26:34,175 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-03-10 22:26:35,519 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-10 22:26:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:26:38,132 INFO L93 Difference]: Finished difference Result 14119 states and 49890 transitions. [2021-03-10 22:26:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-03-10 22:26:38,135 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:26:38,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:26:38,163 INFO L225 Difference]: With dead ends: 14119 [2021-03-10 22:26:38,163 INFO L226 Difference]: Without dead ends: 14030 [2021-03-10 22:26:38,164 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5739 ImplicationChecksByTransitivity, 11190.0ms TimeCoverageRelationStatistics Valid=1316, Invalid=14940, Unknown=0, NotChecked=0, Total=16256 [2021-03-10 22:26:38,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14030 states. [2021-03-10 22:26:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14030 to 7583. [2021-03-10 22:26:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7583 states, 7582 states have (on average 3.541545766288578) internal successors, (26852), 7582 states have internal predecessors, (26852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:38,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7583 states to 7583 states and 26852 transitions. [2021-03-10 22:26:38,315 INFO L78 Accepts]: Start accepts. Automaton has 7583 states and 26852 transitions. Word has length 47 [2021-03-10 22:26:38,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:26:38,315 INFO L480 AbstractCegarLoop]: Abstraction has 7583 states and 26852 transitions. [2021-03-10 22:26:38,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:38,315 INFO L276 IsEmpty]: Start isEmpty. Operand 7583 states and 26852 transitions. [2021-03-10 22:26:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:26:38,325 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:26:38,325 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:38,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-03-10 22:26:38,325 INFO L428 AbstractCegarLoop]: === Iteration 150 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:26:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:26:38,325 INFO L82 PathProgramCache]: Analyzing trace with hash 179287704, now seen corresponding path program 150 times [2021-03-10 22:26:38,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:26:38,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944570877] [2021-03-10 22:26:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:26:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:26:39,227 INFO 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 22:26:39,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944570877] [2021-03-10 22:26:39,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:26:39,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:26:39,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492390200] [2021-03-10 22:26:39,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:26:39,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:26:39,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:26:39,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:26:39,228 INFO L87 Difference]: Start difference. First operand 7583 states and 26852 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:43,069 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2021-03-10 22:26:43,885 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2021-03-10 22:26:45,153 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-03-10 22:26:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:26:58,401 INFO L93 Difference]: Finished difference Result 13896 states and 49472 transitions. [2021-03-10 22:26:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-03-10 22:26:58,405 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:26:58,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:26:58,433 INFO L225 Difference]: With dead ends: 13896 [2021-03-10 22:26:58,433 INFO L226 Difference]: Without dead ends: 13793 [2021-03-10 22:26:58,434 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4760 ImplicationChecksByTransitivity, 10170.7ms TimeCoverageRelationStatistics Valid=1039, Invalid=12767, Unknown=0, NotChecked=0, Total=13806 [2021-03-10 22:26:58,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13793 states. [2021-03-10 22:26:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13793 to 7563. [2021-03-10 22:26:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7563 states, 7562 states have (on average 3.54350700872785) internal successors, (26796), 7562 states have internal predecessors, (26796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7563 states to 7563 states and 26796 transitions. [2021-03-10 22:26:58,585 INFO L78 Accepts]: Start accepts. Automaton has 7563 states and 26796 transitions. Word has length 47 [2021-03-10 22:26:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:26:58,585 INFO L480 AbstractCegarLoop]: Abstraction has 7563 states and 26796 transitions. [2021-03-10 22:26:58,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:58,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7563 states and 26796 transitions. [2021-03-10 22:26:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:26:58,594 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:26:58,595 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:26:58,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-03-10 22:26:58,595 INFO L428 AbstractCegarLoop]: === Iteration 151 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:26:58,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:26:58,595 INFO L82 PathProgramCache]: Analyzing trace with hash 200978940, now seen corresponding path program 151 times [2021-03-10 22:26:58,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:26:58,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103198618] [2021-03-10 22:26:58,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:26:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:26:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:26:59,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103198618] [2021-03-10 22:26:59,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:26:59,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:26:59,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049806943] [2021-03-10 22:26:59,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:26:59,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:26:59,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:26:59,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:26:59,503 INFO L87 Difference]: Start difference. First operand 7563 states and 26796 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:01,763 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2021-03-10 22:27:03,853 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2021-03-10 22:27:04,772 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 22:27:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:27:11,983 INFO L93 Difference]: Finished difference Result 11395 states and 40165 transitions. [2021-03-10 22:27:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 22:27:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:27:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:27:12,009 INFO L225 Difference]: With dead ends: 11395 [2021-03-10 22:27:12,009 INFO L226 Difference]: Without dead ends: 11268 [2021-03-10 22:27:12,009 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 5752.3ms TimeCoverageRelationStatistics Valid=468, Invalid=5082, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 22:27:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11268 states. [2021-03-10 22:27:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11268 to 7585. [2021-03-10 22:27:12,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 7584 states have (on average 3.5403481012658227) internal successors, (26850), 7584 states have internal predecessors, (26850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 26850 transitions. [2021-03-10 22:27:12,143 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 26850 transitions. Word has length 47 [2021-03-10 22:27:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:27:12,143 INFO L480 AbstractCegarLoop]: Abstraction has 7585 states and 26850 transitions. [2021-03-10 22:27:12,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 26850 transitions. [2021-03-10 22:27:12,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:27:12,153 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:27:12,154 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:27:12,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-03-10 22:27:12,154 INFO L428 AbstractCegarLoop]: === Iteration 152 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:27:12,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:27:12,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1170218466, now seen corresponding path program 152 times [2021-03-10 22:27:12,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:27:12,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440416476] [2021-03-10 22:27:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:27:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:27:13,060 INFO 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 22:27:13,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440416476] [2021-03-10 22:27:13,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:27:13,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:27:13,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468350407] [2021-03-10 22:27:13,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:27:13,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:27:13,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:27:13,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:27:13,061 INFO L87 Difference]: Start difference. First operand 7585 states and 26850 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:16,980 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2021-03-10 22:27:17,818 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 22:27:24,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:27:24,198 INFO L93 Difference]: Finished difference Result 11183 states and 39359 transitions. [2021-03-10 22:27:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-03-10 22:27:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:27:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:27:24,224 INFO L225 Difference]: With dead ends: 11183 [2021-03-10 22:27:24,224 INFO L226 Difference]: Without dead ends: 11083 [2021-03-10 22:27:24,225 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 5230.3ms TimeCoverageRelationStatistics Valid=430, Invalid=4400, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 22:27:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11083 states. [2021-03-10 22:27:24,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11083 to 7594. [2021-03-10 22:27:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 3.539049124193336) internal successors, (26872), 7593 states have internal predecessors, (26872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 26872 transitions. [2021-03-10 22:27:24,392 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 26872 transitions. Word has length 47 [2021-03-10 22:27:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:27:24,392 INFO L480 AbstractCegarLoop]: Abstraction has 7594 states and 26872 transitions. [2021-03-10 22:27:24,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 26872 transitions. [2021-03-10 22:27:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:27:24,403 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:27:24,403 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:27:24,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-03-10 22:27:24,403 INFO L428 AbstractCegarLoop]: === Iteration 153 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:27:24,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:27:24,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1689681340, now seen corresponding path program 153 times [2021-03-10 22:27:24,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:27:24,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062867435] [2021-03-10 22:27:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:27:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:27:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:27:25,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062867435] [2021-03-10 22:27:25,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:27:25,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:27:25,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431987843] [2021-03-10 22:27:25,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:27:25,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:27:25,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:27:25,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:27:25,328 INFO L87 Difference]: Start difference. First operand 7594 states and 26872 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:27,598 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2021-03-10 22:27:29,544 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2021-03-10 22:27:30,445 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 22:27:39,108 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:27:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:27:39,365 INFO L93 Difference]: Finished difference Result 12148 states and 42969 transitions. [2021-03-10 22:27:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-03-10 22:27:39,369 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:27:39,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:27:39,393 INFO L225 Difference]: With dead ends: 12148 [2021-03-10 22:27:39,394 INFO L226 Difference]: Without dead ends: 12030 [2021-03-10 22:27:39,394 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 6616.2ms TimeCoverageRelationStatistics Valid=552, Invalid=6090, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 22:27:39,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12030 states. [2021-03-10 22:27:39,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12030 to 7567. [2021-03-10 22:27:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7567 states, 7566 states have (on average 3.542426645519429) internal successors, (26802), 7566 states have internal predecessors, (26802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7567 states to 7567 states and 26802 transitions. [2021-03-10 22:27:39,538 INFO L78 Accepts]: Start accepts. Automaton has 7567 states and 26802 transitions. Word has length 47 [2021-03-10 22:27:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:27:39,538 INFO L480 AbstractCegarLoop]: Abstraction has 7567 states and 26802 transitions. [2021-03-10 22:27:39,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 7567 states and 26802 transitions. [2021-03-10 22:27:39,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:27:39,549 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:27:39,549 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:27:39,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-03-10 22:27:39,549 INFO L428 AbstractCegarLoop]: === Iteration 154 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:27:39,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:27:39,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1479925348, now seen corresponding path program 154 times [2021-03-10 22:27:39,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:27:39,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176402331] [2021-03-10 22:27:39,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:27:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:27:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:27:40,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176402331] [2021-03-10 22:27:40,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:27:40,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:27:40,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001706923] [2021-03-10 22:27:40,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:27:40,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:27:40,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:27:40,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:27:40,610 INFO L87 Difference]: Start difference. First operand 7567 states and 26802 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:43,088 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2021-03-10 22:27:45,317 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 22:27:45,617 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-10 22:27:46,521 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-03-10 22:27:50,688 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 22:27:51,289 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:27:56,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:27:56,162 INFO L93 Difference]: Finished difference Result 12460 states and 43711 transitions. [2021-03-10 22:27:56,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-03-10 22:27:56,166 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:27:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:27:56,191 INFO L225 Difference]: With dead ends: 12460 [2021-03-10 22:27:56,191 INFO L226 Difference]: Without dead ends: 12322 [2021-03-10 22:27:56,192 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2672 ImplicationChecksByTransitivity, 8425.0ms TimeCoverageRelationStatistics Valid=707, Invalid=7849, Unknown=0, NotChecked=0, Total=8556 [2021-03-10 22:27:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2021-03-10 22:27:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 7573. [2021-03-10 22:27:56,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7573 states, 7572 states have (on average 3.541336502905441) internal successors, (26815), 7572 states have internal predecessors, (26815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 26815 transitions. [2021-03-10 22:27:56,336 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 26815 transitions. Word has length 47 [2021-03-10 22:27:56,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:27:56,336 INFO L480 AbstractCegarLoop]: Abstraction has 7573 states and 26815 transitions. [2021-03-10 22:27:56,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:56,336 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 26815 transitions. [2021-03-10 22:27:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:27:56,346 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:27:56,346 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:27:56,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-03-10 22:27:56,346 INFO L428 AbstractCegarLoop]: === Iteration 155 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:27:56,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:27:56,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1651343000, now seen corresponding path program 155 times [2021-03-10 22:27:56,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:27:56,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995453177] [2021-03-10 22:27:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:27:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:27:57,359 INFO 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 22:27:57,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995453177] [2021-03-10 22:27:57,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:27:57,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:27:57,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195741422] [2021-03-10 22:27:57,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:27:57,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:27:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:27:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:27:57,360 INFO L87 Difference]: Start difference. First operand 7573 states and 26815 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:00,216 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2021-03-10 22:28:01,299 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2021-03-10 22:28:01,596 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2021-03-10 22:28:01,941 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2021-03-10 22:28:02,913 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 22:28:03,218 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 22:28:04,419 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-03-10 22:28:09,531 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-03-10 22:28:10,619 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:28:12,985 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:28:16,353 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:28:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:28:16,875 INFO L93 Difference]: Finished difference Result 13753 states and 48494 transitions. [2021-03-10 22:28:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-03-10 22:28:16,878 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:28:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:28:16,907 INFO L225 Difference]: With dead ends: 13753 [2021-03-10 22:28:16,907 INFO L226 Difference]: Without dead ends: 13658 [2021-03-10 22:28:16,908 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 9967.6ms TimeCoverageRelationStatistics Valid=827, Invalid=9679, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 22:28:16,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13658 states. [2021-03-10 22:28:17,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13658 to 7575. [2021-03-10 22:28:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7575 states, 7574 states have (on average 3.541853710060734) internal successors, (26826), 7574 states have internal predecessors, (26826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 26826 transitions. [2021-03-10 22:28:17,063 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 26826 transitions. Word has length 47 [2021-03-10 22:28:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:28:17,063 INFO L480 AbstractCegarLoop]: Abstraction has 7575 states and 26826 transitions. [2021-03-10 22:28:17,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 26826 transitions. [2021-03-10 22:28:17,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:28:17,115 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:28:17,115 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:17,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-03-10 22:28:17,115 INFO L428 AbstractCegarLoop]: === Iteration 156 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:28:17,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:28:17,116 INFO L82 PathProgramCache]: Analyzing trace with hash 198312758, now seen corresponding path program 156 times [2021-03-10 22:28:17,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:28:17,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646877170] [2021-03-10 22:28:17,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:28:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:28:18,097 INFO 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 22:28:18,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646877170] [2021-03-10 22:28:18,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:28:18,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:28:18,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878306713] [2021-03-10 22:28:18,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:28:18,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:28:18,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:28:18,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:28:18,098 INFO L87 Difference]: Start difference. First operand 7575 states and 26826 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:20,589 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2021-03-10 22:28:21,413 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2021-03-10 22:28:21,712 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2021-03-10 22:28:22,732 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 22:28:23,724 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-03-10 22:28:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:28:31,392 INFO L93 Difference]: Finished difference Result 11987 states and 42145 transitions. [2021-03-10 22:28:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-03-10 22:28:31,397 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:28:31,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:28:31,423 INFO L225 Difference]: With dead ends: 11987 [2021-03-10 22:28:31,423 INFO L226 Difference]: Without dead ends: 11887 [2021-03-10 22:28:31,424 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 6477.0ms TimeCoverageRelationStatistics Valid=496, Invalid=5054, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 22:28:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2021-03-10 22:28:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 7584. [2021-03-10 22:28:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7584 states, 7583 states have (on average 3.540551233021232) internal successors, (26848), 7583 states have internal predecessors, (26848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7584 states to 7584 states and 26848 transitions. [2021-03-10 22:28:31,567 INFO L78 Accepts]: Start accepts. Automaton has 7584 states and 26848 transitions. Word has length 47 [2021-03-10 22:28:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:28:31,568 INFO L480 AbstractCegarLoop]: Abstraction has 7584 states and 26848 transitions. [2021-03-10 22:28:31,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 7584 states and 26848 transitions. [2021-03-10 22:28:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:28:31,578 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:28:31,579 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:28:31,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-03-10 22:28:31,579 INFO L428 AbstractCegarLoop]: === Iteration 157 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:28:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:28:31,579 INFO L82 PathProgramCache]: Analyzing trace with hash 132250200, now seen corresponding path program 157 times [2021-03-10 22:28:31,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:28:31,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251331020] [2021-03-10 22:28:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:28:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:28:32,719 INFO 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 22:28:32,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251331020] [2021-03-10 22:28:32,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:28:32,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:28:32,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598277529] [2021-03-10 22:28:32,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:28:32,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:28:32,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:28:32,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:28:32,720 INFO L87 Difference]: Start difference. First operand 7584 states and 26848 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:34,779 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2021-03-10 22:28:35,411 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2021-03-10 22:28:36,307 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2021-03-10 22:28:36,623 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2021-03-10 22:28:37,699 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 22:28:38,708 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-03-10 22:28:48,706 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:28:49,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:28:49,038 INFO L93 Difference]: Finished difference Result 12952 states and 45755 transitions. [2021-03-10 22:28:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-03-10 22:28:49,042 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:28:49,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:28:49,068 INFO L225 Difference]: With dead ends: 12952 [2021-03-10 22:28:49,068 INFO L226 Difference]: Without dead ends: 12846 [2021-03-10 22:28:49,069 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 8153.9ms TimeCoverageRelationStatistics Valid=629, Invalid=7027, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 22:28:49,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12846 states. [2021-03-10 22:28:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12846 to 7569. [2021-03-10 22:28:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7569 states, 7568 states have (on average 3.5429439746300213) internal successors, (26813), 7568 states have internal predecessors, (26813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7569 states to 7569 states and 26813 transitions. [2021-03-10 22:28:49,211 INFO L78 Accepts]: Start accepts. Automaton has 7569 states and 26813 transitions. Word has length 47 [2021-03-10 22:28:49,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:28:49,212 INFO L480 AbstractCegarLoop]: Abstraction has 7569 states and 26813 transitions. [2021-03-10 22:28:49,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 7569 states and 26813 transitions. [2021-03-10 22:28:49,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:28:49,222 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:28:49,222 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:49,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-03-10 22:28:49,222 INFO L428 AbstractCegarLoop]: === Iteration 158 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:28:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:28:49,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1900030986, now seen corresponding path program 158 times [2021-03-10 22:28:49,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:28:49,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859412242] [2021-03-10 22:28:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:28:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:28:50,249 INFO 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 22:28:50,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859412242] [2021-03-10 22:28:50,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:28:50,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:28:50,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943155293] [2021-03-10 22:28:50,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:28:50,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:28:50,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:28:50,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:28:50,250 INFO L87 Difference]: Start difference. First operand 7569 states and 26813 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:52,831 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2021-03-10 22:28:53,710 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 22:28:54,349 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-03-10 22:28:55,135 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-03-10 22:28:56,369 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-03-10 22:29:03,407 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-03-10 22:29:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:29:03,635 INFO L93 Difference]: Finished difference Result 10540 states and 36856 transitions. [2021-03-10 22:29:03,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-03-10 22:29:03,639 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:29:03,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:29:03,659 INFO L225 Difference]: With dead ends: 10540 [2021-03-10 22:29:03,660 INFO L226 Difference]: Without dead ends: 10403 [2021-03-10 22:29:03,660 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 6722.1ms TimeCoverageRelationStatistics Valid=470, Invalid=4932, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 22:29:03,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10403 states. [2021-03-10 22:29:03,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10403 to 7605. [2021-03-10 22:29:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7605 states, 7604 states have (on average 3.5380063124671226) internal successors, (26903), 7604 states have internal predecessors, (26903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 26903 transitions. [2021-03-10 22:29:03,791 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 26903 transitions. Word has length 47 [2021-03-10 22:29:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:29:03,791 INFO L480 AbstractCegarLoop]: Abstraction has 7605 states and 26903 transitions. [2021-03-10 22:29:03,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 26903 transitions. [2021-03-10 22:29:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:29:03,801 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:29:03,801 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:03,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-03-10 22:29:03,802 INFO L428 AbstractCegarLoop]: === Iteration 159 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:29:03,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:29:03,802 INFO L82 PathProgramCache]: Analyzing trace with hash -265437258, now seen corresponding path program 159 times [2021-03-10 22:29:03,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:29:03,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192112277] [2021-03-10 22:29:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:29:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:29:04,924 INFO 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 22:29:04,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192112277] [2021-03-10 22:29:04,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:29:04,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:29:04,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356261224] [2021-03-10 22:29:04,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:29:04,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:29:04,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:29:04,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:29:04,925 INFO L87 Difference]: Start difference. First operand 7605 states and 26903 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:07,678 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2021-03-10 22:29:08,694 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 22:29:10,253 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-03-10 22:29:10,618 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-03-10 22:29:11,813 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-03-10 22:29:16,158 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 22:29:16,687 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:29:16,965 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:29:18,386 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:29:18,943 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:29:22,197 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-03-10 22:29:22,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:29:22,516 INFO L93 Difference]: Finished difference Result 11201 states and 39141 transitions. [2021-03-10 22:29:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-03-10 22:29:22,520 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:29:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:29:22,540 INFO L225 Difference]: With dead ends: 11201 [2021-03-10 22:29:22,540 INFO L226 Difference]: Without dead ends: 11061 [2021-03-10 22:29:22,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2810 ImplicationChecksByTransitivity, 9573.5ms TimeCoverageRelationStatistics Valid=722, Invalid=8208, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 22:29:22,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11061 states. [2021-03-10 22:29:22,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11061 to 7587. [2021-03-10 22:29:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 7586 states have (on average 3.5396783548642237) internal successors, (26852), 7586 states have internal predecessors, (26852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:22,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 26852 transitions. [2021-03-10 22:29:22,673 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 26852 transitions. Word has length 47 [2021-03-10 22:29:22,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:29:22,674 INFO L480 AbstractCegarLoop]: Abstraction has 7587 states and 26852 transitions. [2021-03-10 22:29:22,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 26852 transitions. [2021-03-10 22:29:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:29:22,684 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:29:22,684 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:22,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-03-10 22:29:22,684 INFO L428 AbstractCegarLoop]: === Iteration 160 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:29:22,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:29:22,684 INFO L82 PathProgramCache]: Analyzing trace with hash -698461800, now seen corresponding path program 160 times [2021-03-10 22:29:22,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:29:22,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682923039] [2021-03-10 22:29:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:29:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:29:23,836 INFO 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 22:29:23,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682923039] [2021-03-10 22:29:23,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:29:23,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:29:23,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599822809] [2021-03-10 22:29:23,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:29:23,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:29:23,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:29:23,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:29:23,837 INFO L87 Difference]: Start difference. First operand 7587 states and 26852 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:26,547 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-10 22:29:26,914 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2021-03-10 22:29:27,742 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2021-03-10 22:29:28,042 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-03-10 22:29:28,223 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2021-03-10 22:29:28,578 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-10 22:29:29,200 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 22:29:29,559 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-03-10 22:29:29,812 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2021-03-10 22:29:30,004 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-03-10 22:29:30,428 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-10 22:29:31,245 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-03-10 22:29:31,579 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-03-10 22:29:31,773 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-03-10 22:29:32,019 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-10 22:29:32,352 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:29:33,187 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-03-10 22:29:33,500 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2021-03-10 22:29:33,703 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:29:35,319 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-03-10 22:29:36,116 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-10 22:29:36,631 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:29:37,366 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2021-03-10 22:29:38,407 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 22:29:38,682 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2021-03-10 22:29:39,586 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2021-03-10 22:29:39,984 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-10 22:29:41,733 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:29:41,927 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:29:42,197 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-03-10 22:29:42,510 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 22:29:42,663 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:29:43,678 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:29:43,849 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2021-03-10 22:29:44,326 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2021-03-10 22:29:45,248 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 22:29:46,617 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:29:46,841 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:29:47,130 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-03-10 22:29:47,494 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-10 22:29:48,154 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2021-03-10 22:29:48,436 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-03-10 22:29:48,975 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-03-10 22:29:49,456 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:29:49,640 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-10 22:29:50,521 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-10 22:29:50,796 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:29:51,172 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-03-10 22:29:52,317 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2021-03-10 22:29:53,106 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:29:53,711 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2021-03-10 22:29:54,399 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:29:54,661 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2021-03-10 22:29:54,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:29:54,860 INFO L93 Difference]: Finished difference Result 13812 states and 48433 transitions. [2021-03-10 22:29:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-03-10 22:29:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:29:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:29:54,891 INFO L225 Difference]: With dead ends: 13812 [2021-03-10 22:29:54,891 INFO L226 Difference]: Without dead ends: 13438 [2021-03-10 22:29:54,893 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6484 ImplicationChecksByTransitivity, 16652.9ms TimeCoverageRelationStatistics Valid=1374, Invalid=16716, Unknown=0, NotChecked=0, Total=18090 [2021-03-10 22:29:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13438 states. [2021-03-10 22:29:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13438 to 7810. [2021-03-10 22:29:55,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7810 states, 7809 states have (on average 3.5375848380074273) internal successors, (27625), 7809 states have internal predecessors, (27625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7810 states to 7810 states and 27625 transitions. [2021-03-10 22:29:55,049 INFO L78 Accepts]: Start accepts. Automaton has 7810 states and 27625 transitions. Word has length 47 [2021-03-10 22:29:55,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:29:55,049 INFO L480 AbstractCegarLoop]: Abstraction has 7810 states and 27625 transitions. [2021-03-10 22:29:55,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 7810 states and 27625 transitions. [2021-03-10 22:29:55,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:29:55,059 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:29:55,059 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:55,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-03-10 22:29:55,059 INFO L428 AbstractCegarLoop]: === Iteration 161 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:29:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:29:55,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1549113708, now seen corresponding path program 161 times [2021-03-10 22:29:55,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:29:55,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619033312] [2021-03-10 22:29:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:29:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:29:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:29:56,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619033312] [2021-03-10 22:29:56,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:29:56,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:29:56,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500147126] [2021-03-10 22:29:56,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:29:56,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:29:56,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:29:56,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:29:56,263 INFO L87 Difference]: Start difference. First operand 7810 states and 27625 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:59,555 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2021-03-10 22:30:00,302 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2021-03-10 22:30:00,674 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-03-10 22:30:00,872 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-10 22:30:01,305 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-10 22:30:02,188 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 22:30:02,413 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2021-03-10 22:30:02,690 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-03-10 22:30:02,967 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2021-03-10 22:30:03,421 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-10 22:30:04,350 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-03-10 22:30:04,777 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-03-10 22:30:05,029 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:30:05,287 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 22:30:05,985 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:30:06,723 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-03-10 22:30:07,060 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-10 22:30:07,277 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:30:08,984 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-03-10 22:30:09,384 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:30:09,941 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-10 22:30:10,475 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:30:11,415 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2021-03-10 22:30:12,400 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-03-10 22:30:12,677 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-03-10 22:30:13,184 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2021-03-10 22:30:14,425 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2021-03-10 22:30:14,970 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2021-03-10 22:30:16,903 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:30:17,105 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:30:17,492 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-03-10 22:30:17,644 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:30:18,833 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2021-03-10 22:30:19,015 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-03-10 22:30:19,336 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:30:19,613 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2021-03-10 22:30:19,911 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 22:30:20,766 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2021-03-10 22:30:22,261 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2021-03-10 22:30:22,801 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-10 22:30:22,994 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-10 22:30:23,374 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2021-03-10 22:30:23,608 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2021-03-10 22:30:24,201 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-03-10 22:30:24,619 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:30:24,835 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-10 22:30:26,133 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-03-10 22:30:27,149 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2021-03-10 22:30:27,901 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:30:28,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:30:28,965 INFO L93 Difference]: Finished difference Result 13744 states and 48414 transitions. [2021-03-10 22:30:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-03-10 22:30:28,971 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:30:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:30:28,999 INFO L225 Difference]: With dead ends: 13744 [2021-03-10 22:30:28,999 INFO L226 Difference]: Without dead ends: 13521 [2021-03-10 22:30:29,000 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5433 ImplicationChecksByTransitivity, 16370.2ms TimeCoverageRelationStatistics Valid=1224, Invalid=14276, Unknown=0, NotChecked=0, Total=15500 [2021-03-10 22:30:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13521 states. [2021-03-10 22:30:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13521 to 7542. [2021-03-10 22:30:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7542 states, 7541 states have (on average 3.536931441453388) internal successors, (26672), 7541 states have internal predecessors, (26672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:30:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7542 states to 7542 states and 26672 transitions. [2021-03-10 22:30:29,152 INFO L78 Accepts]: Start accepts. Automaton has 7542 states and 26672 transitions. Word has length 47 [2021-03-10 22:30:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:30:29,152 INFO L480 AbstractCegarLoop]: Abstraction has 7542 states and 26672 transitions. [2021-03-10 22:30:29,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:30:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7542 states and 26672 transitions. [2021-03-10 22:30:29,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:30:29,162 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:30:29,162 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:29,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-03-10 22:30:29,162 INFO L428 AbstractCegarLoop]: === Iteration 162 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:30:29,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:30:29,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1656483066, now seen corresponding path program 162 times [2021-03-10 22:30:29,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:30:29,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542699655] [2021-03-10 22:30:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:30:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:30:30,478 INFO 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 22:30:30,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542699655] [2021-03-10 22:30:30,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:30:30,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:30:30,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998763035] [2021-03-10 22:30:30,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:30:30,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:30:30,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:30:30,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:30:30,479 INFO L87 Difference]: Start difference. First operand 7542 states and 26672 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:30:32,363 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2021-03-10 22:30:32,594 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2021-03-10 22:30:33,990 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2021-03-10 22:30:34,263 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-03-10 22:30:35,042 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 22:30:35,255 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:30:35,473 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-03-10 22:30:35,865 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-03-10 22:30:36,824 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2021-03-10 22:30:37,228 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2021-03-10 22:30:37,692 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:30:38,417 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:30:38,714 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 22:30:40,604 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:30:41,401 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-03-10 22:30:43,572 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-03-10 22:30:43,879 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2021-03-10 22:30:44,788 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:30:45,154 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:30:45,609 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-03-10 22:30:46,371 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 22:30:46,934 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:30:47,634 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:30:47,909 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 22:30:48,299 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:30:50,493 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:30:51,689 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2021-03-10 22:30:52,037 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2021-03-10 22:30:52,346 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:30:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:30:52,544 INFO L93 Difference]: Finished difference Result 12404 states and 43474 transitions. [2021-03-10 22:30:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-03-10 22:30:52,550 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:30:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:30:52,574 INFO L225 Difference]: With dead ends: 12404 [2021-03-10 22:30:52,574 INFO L226 Difference]: Without dead ends: 12282 [2021-03-10 22:30:52,575 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2949 ImplicationChecksByTransitivity, 11832.6ms TimeCoverageRelationStatistics Valid=752, Invalid=8560, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 22:30:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2021-03-10 22:30:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 7548. [2021-03-10 22:30:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7548 states, 7547 states have (on average 3.53584205644627) internal successors, (26685), 7547 states have internal predecessors, (26685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:30:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7548 states to 7548 states and 26685 transitions. [2021-03-10 22:30:52,725 INFO L78 Accepts]: Start accepts. Automaton has 7548 states and 26685 transitions. Word has length 47 [2021-03-10 22:30:52,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:30:52,725 INFO L480 AbstractCegarLoop]: Abstraction has 7548 states and 26685 transitions. [2021-03-10 22:30:52,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:30:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 7548 states and 26685 transitions. [2021-03-10 22:30:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:30:52,736 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:30:52,737 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:30:52,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-03-10 22:30:52,737 INFO L428 AbstractCegarLoop]: === Iteration 163 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:30:52,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:30:52,737 INFO L82 PathProgramCache]: Analyzing trace with hash 492784118, now seen corresponding path program 163 times [2021-03-10 22:30:52,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:30:52,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153138490] [2021-03-10 22:30:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:30:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:30:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:30:54,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153138490] [2021-03-10 22:30:54,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:30:54,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:30:54,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073892405] [2021-03-10 22:30:54,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:30:54,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:30:54,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:30:54,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:30:54,103 INFO L87 Difference]: Start difference. First operand 7548 states and 26685 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:30:56,962 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 17 [2021-03-10 22:30:57,673 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2021-03-10 22:30:58,017 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-03-10 22:30:58,973 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 22:30:59,167 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:30:59,392 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-03-10 22:30:59,592 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:30:59,815 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2021-03-10 22:31:01,015 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2021-03-10 22:31:01,472 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:31:01,727 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-10 22:31:02,019 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-03-10 22:31:03,231 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-03-10 22:31:03,526 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:31:03,767 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:31:06,276 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-10 22:31:08,404 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2021-03-10 22:31:08,586 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:31:09,574 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:31:12,107 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 17 [2021-03-10 22:31:12,417 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:31:12,691 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:31:13,028 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 22:31:14,154 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:31:14,752 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:31:16,249 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:31:16,558 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:31:17,022 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-10 22:31:17,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:31:17,226 INFO L93 Difference]: Finished difference Result 13260 states and 46655 transitions. [2021-03-10 22:31:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-03-10 22:31:17,231 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:31:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:31:17,257 INFO L225 Difference]: With dead ends: 13260 [2021-03-10 22:31:17,257 INFO L226 Difference]: Without dead ends: 13145 [2021-03-10 22:31:17,258 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3332 ImplicationChecksByTransitivity, 12121.8ms TimeCoverageRelationStatistics Valid=809, Invalid=9493, Unknown=0, NotChecked=0, Total=10302 [2021-03-10 22:31:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13145 states. [2021-03-10 22:31:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13145 to 7550. [2021-03-10 22:31:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7550 states, 7549 states have (on average 3.5355676248509735) internal successors, (26690), 7549 states have internal predecessors, (26690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:31:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7550 states to 7550 states and 26690 transitions. [2021-03-10 22:31:17,403 INFO L78 Accepts]: Start accepts. Automaton has 7550 states and 26690 transitions. Word has length 47 [2021-03-10 22:31:17,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:31:17,403 INFO L480 AbstractCegarLoop]: Abstraction has 7550 states and 26690 transitions. [2021-03-10 22:31:17,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:31:17,403 INFO L276 IsEmpty]: Start isEmpty. Operand 7550 states and 26690 transitions. [2021-03-10 22:31:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:31:17,412 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:31:17,412 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:17,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-03-10 22:31:17,413 INFO L428 AbstractCegarLoop]: === Iteration 164 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:31:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:31:17,413 INFO L82 PathProgramCache]: Analyzing trace with hash -960246124, now seen corresponding path program 164 times [2021-03-10 22:31:17,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:31:17,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540184858] [2021-03-10 22:31:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:31:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:31:18,588 INFO 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 22:31:18,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540184858] [2021-03-10 22:31:18,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:31:18,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:31:18,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344742403] [2021-03-10 22:31:18,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:31:18,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:31:18,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:31:18,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:31:18,589 INFO L87 Difference]: Start difference. First operand 7550 states and 26690 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:31:21,521 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2021-03-10 22:31:21,785 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-03-10 22:31:22,486 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 22:31:22,854 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-03-10 22:31:23,928 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2021-03-10 22:31:24,300 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-03-10 22:31:25,173 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:31:29,192 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-03-10 22:31:30,147 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2021-03-10 22:31:34,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:31:34,067 INFO L93 Difference]: Finished difference Result 11476 states and 40361 transitions. [2021-03-10 22:31:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 22:31:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:31:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:31:34,093 INFO L225 Difference]: With dead ends: 11476 [2021-03-10 22:31:34,094 INFO L226 Difference]: Without dead ends: 11376 [2021-03-10 22:31:34,094 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 7429.8ms TimeCoverageRelationStatistics Valid=472, Invalid=4784, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 22:31:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11376 states. [2021-03-10 22:31:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11376 to 7559. [2021-03-10 22:31:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7559 states, 7558 states have (on average 3.5342683249536915) internal successors, (26712), 7558 states have internal predecessors, (26712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:31:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7559 states to 7559 states and 26712 transitions. [2021-03-10 22:31:34,264 INFO L78 Accepts]: Start accepts. Automaton has 7559 states and 26712 transitions. Word has length 47 [2021-03-10 22:31:34,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:31:34,264 INFO L480 AbstractCegarLoop]: Abstraction has 7559 states and 26712 transitions. [2021-03-10 22:31:34,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:31:34,265 INFO L276 IsEmpty]: Start isEmpty. Operand 7559 states and 26712 transitions. [2021-03-10 22:31:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:31:34,275 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:31:34,275 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:31:34,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-03-10 22:31:34,275 INFO L428 AbstractCegarLoop]: === Iteration 165 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:31:34,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:31:34,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1026308682, now seen corresponding path program 165 times [2021-03-10 22:31:34,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:31:34,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128291973] [2021-03-10 22:31:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:31:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:31:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:31:35,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128291973] [2021-03-10 22:31:35,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:31:35,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 22:31:35,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782813536] [2021-03-10 22:31:35,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 22:31:35,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:31:35,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 22:31:35,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:31:35,571 INFO L87 Difference]: Start difference. First operand 7559 states and 26712 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:31:38,631 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2021-03-10 22:31:38,908 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2021-03-10 22:31:39,655 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 22:31:39,852 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:31:40,075 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2021-03-10 22:31:41,163 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2021-03-10 22:31:41,538 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-03-10 22:31:42,428 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-03-10 22:31:46,101 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2021-03-10 22:31:46,600 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:31:50,637 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:31:51,818 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:31:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:31:52,709 INFO L93 Difference]: Finished difference Result 12033 states and 42383 transitions. [2021-03-10 22:31:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 22:31:52,714 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 22:31:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:31:52,735 INFO L225 Difference]: With dead ends: 12033 [2021-03-10 22:31:52,735 INFO L226 Difference]: Without dead ends: 11913 [2021-03-10 22:31:52,736 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 8483.6ms TimeCoverageRelationStatistics Valid=536, Invalid=5944, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 22:31:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11913 states. [2021-03-10 22:31:52,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11913 to 7530. [2021-03-10 22:31:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7530 states, 7529 states have (on average 3.539115420374552) internal successors, (26646), 7529 states have internal predecessors, (26646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:31:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 26646 transitions. [2021-03-10 22:31:52,867 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 26646 transitions. Word has length 47 [2021-03-10 22:31:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:31:52,867 INFO L480 AbstractCegarLoop]: Abstraction has 7530 states and 26646 transitions. [2021-03-10 22:31:52,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:31:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 26646 transitions. [2021-03-10 22:31:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 22:31:52,876 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:31:52,876 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:31:52,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-03-10 22:31:52,876 INFO L428 AbstractCegarLoop]: === Iteration 166 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-10 22:31:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:31:52,877 INFO L82 PathProgramCache]: Analyzing trace with hash -758680900, now seen corresponding path program 166 times [2021-03-10 22:31:52,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:31:52,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397852764] [2021-03-10 22:31:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:31:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:31:53,910 INFO 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 22:31:53,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397852764] [2021-03-10 22:31:53,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:31:53,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-10 22:31:53,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318333675] [2021-03-10 22:31:53,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 22:31:53,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:31:53,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 22:31:53,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:31:53,911 INFO L87 Difference]: Start difference. First operand 7530 states and 26646 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:31:56,524 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2021-03-10 22:31:56,743 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 17 [2021-03-10 22:31:58,720 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-03-10 22:31:59,539 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2021-03-10 22:32:00,129 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:32:00,430 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-03-10 22:32:00,737 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2021-03-10 22:32:06,255 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2021-03-10 22:32:07,391 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2021-03-10 22:32:07,643 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:32:08,046 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:32:08,613 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-10 22:32:09,176 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 Received shutdown request... [2021-03-10 22:32:10,076 WARN L222 SmtUtils]: Removed 11 from assertion stack [2021-03-10 22:32:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 22:32:10,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-03-10 22:32:10,077 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 22:32:10,080 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 22:32:10,080 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 10:32:10 BasicIcfg [2021-03-10 22:32:10,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 22:32:10,080 INFO L168 Benchmark]: Toolchain (without parser) took 817181.78 ms. Allocated memory was 255.9 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 236.4 MB in the beginning and 1.1 GB in the end (delta: -858.0 MB). Peak memory consumption was 802.4 MB. Max. memory is 16.0 GB. [2021-03-10 22:32:10,080 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 157.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 22:32:10,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.71 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:32:10,081 INFO L168 Benchmark]: Boogie Preprocessor took 18.13 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:32:10,081 INFO L168 Benchmark]: RCFGBuilder took 229.80 ms. Allocated memory is still 255.9 MB. Free memory was 233.4 MB in the beginning and 236.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. [2021-03-10 22:32:10,081 INFO L168 Benchmark]: TraceAbstraction took 816909.21 ms. Allocated memory was 255.9 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 236.0 MB in the beginning and 1.1 GB in the end (delta: -858.4 MB). Peak memory consumption was 801.4 MB. Max. memory is 16.0 GB. [2021-03-10 22:32:10,081 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 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 157.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.71 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.13 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 229.80 ms. Allocated memory is still 255.9 MB. Free memory was 233.4 MB in the beginning and 236.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 816909.21 ms. Allocated memory was 255.9 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 236.0 MB in the beginning and 1.1 GB in the end (delta: -858.4 MB). Peak memory consumption was 801.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 95). Cancelled while BasicCegarLoop was constructing difference of abstraction (7530states) and FLOYD_HOARE automaton (currently 74 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 26 for 24ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 816736.1ms, OverallIterations: 166, TraceHistogramMax: 1, EmptinessCheckTime: 1461.1ms, AutomataDifference: 725052.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 368.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38854 SDtfs, 82491 SDslu, 455945 SDs, 0 SdLazy, 325158 SolverSat, 11458 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 139133.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9330 GetRequests, 201 SyntacticMatches, 200 SemanticMatches, 8928 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152390 ImplicationChecksByTransitivity, 394214.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7810occurred in iteration=160, InterpolantAutomatonStates: 7649, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17005.7ms AutomataMinimizationTime, 165 MinimizatonAttempts, 257893 StatesRemovedByMinimization, 163 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 109.3ms SsaConstructionTime, 358.0ms SatisfiabilityAnalysisTime, 71756.2ms InterpolantComputationTime, 7802 NumberOfCodeBlocks, 7802 NumberOfCodeBlocksAsserted, 166 NumberOfCheckSat, 7636 ConstructedInterpolants, 0 QuantifiedInterpolants, 105743 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 166 InterpolantComputations, 166 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