/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/hard1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 05:39:22,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 05:39:22,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 05:39:22,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 05:39:22,357 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 [2021-04-15 05:39:22,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 05:39:22,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 05:39:22,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 05:39:22,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 05:39:22,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 05:39:22,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 05:39:22,379 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 05:39:22,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 05:39:22,379 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 05:39:22,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 05:39:22,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 05:39:22,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 05:39:22,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 05:39:22,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 05:39:22,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 05:39:22,380 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 05:39:22,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 05:39:22,381 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 05:39:22,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 05:39:22,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 05:39:22,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 05:39:22,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 05:39:22,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 05:39:22,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 05:39:22,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 05:39:22,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 05:39:22,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 05:39:22,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 05:39:22,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 05:39:22,382 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 05:39:22,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 05:39:22,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 05:39:22,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 05:39:22,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 05:39:22,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 05:39:22,740 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-15 05:39:22,741 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-15 05:39:22,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/hard1.wvr.bpl [2021-04-15 05:39:22,743 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/hard1.wvr.bpl' [2021-04-15 05:39:22,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 05:39:22,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-15 05:39:22,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 05:39:22,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 05:39:22,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 05:39:22,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (1/1) ... [2021-04-15 05:39:22,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (1/1) ... [2021-04-15 05:39:22,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 05:39:22,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 05:39:22,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 05:39:22,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 05:39:22,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (1/1) ... [2021-04-15 05:39:22,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (1/1) ... [2021-04-15 05:39:22,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (1/1) ... [2021-04-15 05:39:22,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (1/1) ... [2021-04-15 05:39:22,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (1/1) ... [2021-04-15 05:39:22,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (1/1) ... [2021-04-15 05:39:22,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (1/1) ... [2021-04-15 05:39:22,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 05:39:22,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 05:39:22,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 05:39:22,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 05:39:22,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (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 [2021-04-15 05:39:22,871 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-15 05:39:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-15 05:39:22,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-15 05:39:22,871 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-15 05:39:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-15 05:39:22,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-15 05:39:22,872 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-15 05:39:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 05:39:22,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 05:39:22,872 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-04-15 05:39:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-04-15 05:39:22,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-04-15 05:39:22,872 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-04-15 05:39:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-04-15 05:39:22,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-04-15 05:39:22,873 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 05:39:23,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 05:39:23,054 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-15 05:39:23,055 INFO L202 PluginConnector]: Adding new model hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 05:39:23 BoogieIcfgContainer [2021-04-15 05:39:23,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 05:39:23,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 05:39:23,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 05:39:23,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 05:39:23,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:22" (1/2) ... [2021-04-15 05:39:23,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c91af6 and model type hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 05:39:23, skipping insertion in model container [2021-04-15 05:39:23,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 05:39:23" (2/2) ... [2021-04-15 05:39:23,062 INFO L111 eAbstractionObserver]: Analyzing ICFG hard1.wvr.bpl [2021-04-15 05:39:23,067 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 05:39:23,067 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 05:39:23,070 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 05:39:23,071 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 05:39:23,111 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-04-15 05:39:23,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-04-15 05:39:23,143 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 05:39:23,143 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 05:39:23,143 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 05:39:23,144 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 05:39:23,144 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 05:39:23,144 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 05:39:23,144 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 05:39:23,144 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 05:39:23,153 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 33 transitions, 98 flow [2021-04-15 05:39:23,283 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 431 states, 429 states have (on average 3.8578088578088576) internal successors, (1655), 430 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:23,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 431 states, 429 states have (on average 3.8578088578088576) internal successors, (1655), 430 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-04-15 05:39:23,309 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:23,310 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:23,311 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:23,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:23,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1363796692, now seen corresponding path program 1 times [2021-04-15 05:39:23,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:23,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064548424] [2021-04-15 05:39:23,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:23,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064548424] [2021-04-15 05:39:23,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:23,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-15 05:39:23,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323952084] [2021-04-15 05:39:23,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-15 05:39:23,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:23,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-15 05:39:23,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 05:39:23,461 INFO L87 Difference]: Start difference. First operand has 431 states, 429 states have (on average 3.8578088578088576) internal successors, (1655), 430 states have internal predecessors, (1655), 0 states have call successors, (0), 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 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:23,516 INFO L93 Difference]: Finished difference Result 854 states and 3302 transitions. [2021-04-15 05:39:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-15 05:39:23,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-04-15 05:39:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:23,537 INFO L225 Difference]: With dead ends: 854 [2021-04-15 05:39:23,537 INFO L226 Difference]: Without dead ends: 823 [2021-04-15 05:39:23,538 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 05:39:23,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-04-15 05:39:23,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 558. [2021-04-15 05:39:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 3.8545780969479355) internal successors, (2147), 557 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 2147 transitions. [2021-04-15 05:39:23,659 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 2147 transitions. Word has length 19 [2021-04-15 05:39:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:23,662 INFO L480 AbstractCegarLoop]: Abstraction has 558 states and 2147 transitions. [2021-04-15 05:39:23,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:23,663 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 2147 transitions. [2021-04-15 05:39:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-04-15 05:39:23,672 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:23,673 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:23,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 05:39:23,673 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:23,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:23,677 INFO L82 PathProgramCache]: Analyzing trace with hash -669454164, now seen corresponding path program 1 times [2021-04-15 05:39:23,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:23,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336658690] [2021-04-15 05:39:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:23,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336658690] [2021-04-15 05:39:23,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373351589] [2021-04-15 05:39:23,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:23,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-04-15 05:39:23,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:23,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:23,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-04-15 05:39:23,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983502764] [2021-04-15 05:39:23,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:23,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:23,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:23,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:23,978 INFO L87 Difference]: Start difference. First operand 558 states and 2147 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:24,129 INFO L93 Difference]: Finished difference Result 1573 states and 5792 transitions. [2021-04-15 05:39:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 05:39:24,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-04-15 05:39:24,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:24,141 INFO L225 Difference]: With dead ends: 1573 [2021-04-15 05:39:24,141 INFO L226 Difference]: Without dead ends: 1573 [2021-04-15 05:39:24,142 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-04-15 05:39:24,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 863. [2021-04-15 05:39:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 862 states have (on average 3.960556844547564) internal successors, (3414), 862 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 3414 transitions. [2021-04-15 05:39:24,199 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 3414 transitions. Word has length 21 [2021-04-15 05:39:24,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:24,199 INFO L480 AbstractCegarLoop]: Abstraction has 863 states and 3414 transitions. [2021-04-15 05:39:24,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 3414 transitions. [2021-04-15 05:39:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-04-15 05:39:24,204 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:24,204 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:24,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-04-15 05:39:24,429 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash 421259310, now seen corresponding path program 1 times [2021-04-15 05:39:24,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:24,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230382649] [2021-04-15 05:39:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:24,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230382649] [2021-04-15 05:39:24,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036698315] [2021-04-15 05:39:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:24,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-04-15 05:39:24,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:24,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:24,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-04-15 05:39:24,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795428669] [2021-04-15 05:39:24,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:24,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:24,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:24,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:24,618 INFO L87 Difference]: Start difference. First operand 863 states and 3414 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:24,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:24,719 INFO L93 Difference]: Finished difference Result 1748 states and 6572 transitions. [2021-04-15 05:39:24,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:24,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-04-15 05:39:24,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:24,733 INFO L225 Difference]: With dead ends: 1748 [2021-04-15 05:39:24,733 INFO L226 Difference]: Without dead ends: 1748 [2021-04-15 05:39:24,733 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 31.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2021-04-15 05:39:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 927. [2021-04-15 05:39:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 926 states have (on average 3.970842332613391) internal successors, (3677), 926 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:24,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 3677 transitions. [2021-04-15 05:39:24,775 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 3677 transitions. Word has length 21 [2021-04-15 05:39:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:24,775 INFO L480 AbstractCegarLoop]: Abstraction has 927 states and 3677 transitions. [2021-04-15 05:39:24,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 3677 transitions. [2021-04-15 05:39:24,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-04-15 05:39:24,779 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:24,779 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:24,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:24,993 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:24,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1822537518, now seen corresponding path program 1 times [2021-04-15 05:39:24,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:24,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166253241] [2021-04-15 05:39:24,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:25,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166253241] [2021-04-15 05:39:25,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:25,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 05:39:25,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851739167] [2021-04-15 05:39:25,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 05:39:25,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:25,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 05:39:25,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 05:39:25,047 INFO L87 Difference]: Start difference. First operand 927 states and 3677 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:25,120 INFO L93 Difference]: Finished difference Result 997 states and 3621 transitions. [2021-04-15 05:39:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 05:39:25,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-04-15 05:39:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:25,129 INFO L225 Difference]: With dead ends: 997 [2021-04-15 05:39:25,129 INFO L226 Difference]: Without dead ends: 884 [2021-04-15 05:39:25,130 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 05:39:25,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-04-15 05:39:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 808. [2021-04-15 05:39:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 3.758364312267658) internal successors, (3033), 807 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 3033 transitions. [2021-04-15 05:39:25,161 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 3033 transitions. Word has length 21 [2021-04-15 05:39:25,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:25,161 INFO L480 AbstractCegarLoop]: Abstraction has 808 states and 3033 transitions. [2021-04-15 05:39:25,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:25,161 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 3033 transitions. [2021-04-15 05:39:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-04-15 05:39:25,164 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:25,164 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:25,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 05:39:25,165 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:25,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2021695698, now seen corresponding path program 2 times [2021-04-15 05:39:25,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:25,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478276124] [2021-04-15 05:39:25,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:25,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478276124] [2021-04-15 05:39:25,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:25,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 05:39:25,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880485123] [2021-04-15 05:39:25,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 05:39:25,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:25,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 05:39:25,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 05:39:25,220 INFO L87 Difference]: Start difference. First operand 808 states and 3033 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:25,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:25,275 INFO L93 Difference]: Finished difference Result 949 states and 3541 transitions. [2021-04-15 05:39:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 05:39:25,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-04-15 05:39:25,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:25,282 INFO L225 Difference]: With dead ends: 949 [2021-04-15 05:39:25,282 INFO L226 Difference]: Without dead ends: 949 [2021-04-15 05:39:25,283 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 05:39:25,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-04-15 05:39:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 729. [2021-04-15 05:39:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 3.782967032967033) internal successors, (2754), 728 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 2754 transitions. [2021-04-15 05:39:25,311 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 2754 transitions. Word has length 21 [2021-04-15 05:39:25,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:25,312 INFO L480 AbstractCegarLoop]: Abstraction has 729 states and 2754 transitions. [2021-04-15 05:39:25,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:25,312 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 2754 transitions. [2021-04-15 05:39:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:25,317 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:25,317 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:25,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 05:39:25,317 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:25,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:25,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1964497838, now seen corresponding path program 1 times [2021-04-15 05:39:25,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:25,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133983712] [2021-04-15 05:39:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:25,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133983712] [2021-04-15 05:39:25,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57164828] [2021-04-15 05:39:25,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:25,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-04-15 05:39:25,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:25,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:25,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-04-15 05:39:25,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012119614] [2021-04-15 05:39:25,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 05:39:25,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:25,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 05:39:25,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:25,518 INFO L87 Difference]: Start difference. First operand 729 states and 2754 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:25,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:25,667 INFO L93 Difference]: Finished difference Result 1389 states and 5122 transitions. [2021-04-15 05:39:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:39:25,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:25,678 INFO L225 Difference]: With dead ends: 1389 [2021-04-15 05:39:25,679 INFO L226 Difference]: Without dead ends: 1389 [2021-04-15 05:39:25,680 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:39:25,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-04-15 05:39:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 892. [2021-04-15 05:39:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 3.772166105499439) internal successors, (3361), 891 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 3361 transitions. [2021-04-15 05:39:25,727 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 3361 transitions. Word has length 23 [2021-04-15 05:39:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:25,727 INFO L480 AbstractCegarLoop]: Abstraction has 892 states and 3361 transitions. [2021-04-15 05:39:25,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 3361 transitions. [2021-04-15 05:39:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:25,730 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:25,730 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:25,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:25,947 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:25,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:25,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1231348690, now seen corresponding path program 1 times [2021-04-15 05:39:25,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:25,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276333065] [2021-04-15 05:39:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:26,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276333065] [2021-04-15 05:39:26,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59132015] [2021-04-15 05:39:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:26,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:39:26,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:26,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:26,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:26,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096669850] [2021-04-15 05:39:26,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:26,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:26,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:26,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:26,123 INFO L87 Difference]: Start difference. First operand 892 states and 3361 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:26,183 INFO L93 Difference]: Finished difference Result 1781 states and 6589 transitions. [2021-04-15 05:39:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:26,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:26,195 INFO L225 Difference]: With dead ends: 1781 [2021-04-15 05:39:26,195 INFO L226 Difference]: Without dead ends: 1738 [2021-04-15 05:39:26,195 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-04-15 05:39:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1055. [2021-04-15 05:39:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 3.8055028462998104) internal successors, (4011), 1054 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 4011 transitions. [2021-04-15 05:39:26,237 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 4011 transitions. Word has length 23 [2021-04-15 05:39:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:26,237 INFO L480 AbstractCegarLoop]: Abstraction has 1055 states and 4011 transitions. [2021-04-15 05:39:26,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:26,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 4011 transitions. [2021-04-15 05:39:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:26,240 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:26,240 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:26,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:26,461 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:26,461 INFO L82 PathProgramCache]: Analyzing trace with hash -516640296, now seen corresponding path program 2 times [2021-04-15 05:39:26,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:26,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449251550] [2021-04-15 05:39:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:26,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449251550] [2021-04-15 05:39:26,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522582136] [2021-04-15 05:39:26,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:26,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:39:26,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:26,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:39:26,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:26,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:26,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:26,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399005184] [2021-04-15 05:39:26,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:26,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:26,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:26,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:26,647 INFO L87 Difference]: Start difference. First operand 1055 states and 4011 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:26,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:26,722 INFO L93 Difference]: Finished difference Result 1504 states and 5657 transitions. [2021-04-15 05:39:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:26,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:26,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:26,731 INFO L225 Difference]: With dead ends: 1504 [2021-04-15 05:39:26,731 INFO L226 Difference]: Without dead ends: 1461 [2021-04-15 05:39:26,731 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 40.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-04-15 05:39:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1067. [2021-04-15 05:39:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 3.8227016885553473) internal successors, (4075), 1066 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 4075 transitions. [2021-04-15 05:39:26,762 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 4075 transitions. Word has length 23 [2021-04-15 05:39:26,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:26,762 INFO L480 AbstractCegarLoop]: Abstraction has 1067 states and 4075 transitions. [2021-04-15 05:39:26,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 4075 transitions. [2021-04-15 05:39:26,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:26,766 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:26,766 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:26,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:26,981 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:26,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:26,981 INFO L82 PathProgramCache]: Analyzing trace with hash -28423604, now seen corresponding path program 3 times [2021-04-15 05:39:26,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:26,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281871026] [2021-04-15 05:39:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:27,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281871026] [2021-04-15 05:39:27,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215509172] [2021-04-15 05:39:27,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:27,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 05:39:27,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:27,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:39:27,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:27,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:27,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:27,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234302361] [2021-04-15 05:39:27,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:27,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:27,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:27,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:27,152 INFO L87 Difference]: Start difference. First operand 1067 states and 4075 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:27,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:27,210 INFO L93 Difference]: Finished difference Result 1444 states and 5469 transitions. [2021-04-15 05:39:27,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:27,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:27,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:27,219 INFO L225 Difference]: With dead ends: 1444 [2021-04-15 05:39:27,220 INFO L226 Difference]: Without dead ends: 1401 [2021-04-15 05:39:27,220 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-04-15 05:39:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1086. [2021-04-15 05:39:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 3.8359447004608294) internal successors, (4162), 1085 states have internal predecessors, (4162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 4162 transitions. [2021-04-15 05:39:27,253 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 4162 transitions. Word has length 23 [2021-04-15 05:39:27,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:27,254 INFO L480 AbstractCegarLoop]: Abstraction has 1086 states and 4162 transitions. [2021-04-15 05:39:27,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 4162 transitions. [2021-04-15 05:39:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:27,258 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:27,258 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:27,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:27,473 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:27,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:27,473 INFO L82 PathProgramCache]: Analyzing trace with hash -725562960, now seen corresponding path program 1 times [2021-04-15 05:39:27,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:27,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965455257] [2021-04-15 05:39:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:27,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965455257] [2021-04-15 05:39:27,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710895697] [2021-04-15 05:39:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:27,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:39:27,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:27,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:27,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:27,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073027850] [2021-04-15 05:39:27,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:27,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:27,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:27,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:27,611 INFO L87 Difference]: Start difference. First operand 1086 states and 4162 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:27,691 INFO L93 Difference]: Finished difference Result 2517 states and 9613 transitions. [2021-04-15 05:39:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:27,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:27,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:27,719 INFO L225 Difference]: With dead ends: 2517 [2021-04-15 05:39:27,719 INFO L226 Difference]: Without dead ends: 2474 [2021-04-15 05:39:27,719 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-04-15 05:39:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1252. [2021-04-15 05:39:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 3.906474820143885) internal successors, (4887), 1251 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 4887 transitions. [2021-04-15 05:39:27,766 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 4887 transitions. Word has length 23 [2021-04-15 05:39:27,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:27,766 INFO L480 AbstractCegarLoop]: Abstraction has 1252 states and 4887 transitions. [2021-04-15 05:39:27,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:27,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 4887 transitions. [2021-04-15 05:39:27,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:27,770 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:27,771 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:27,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-04-15 05:39:27,997 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:27,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:27,997 INFO L82 PathProgramCache]: Analyzing trace with hash 2110243560, now seen corresponding path program 2 times [2021-04-15 05:39:27,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:27,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184898929] [2021-04-15 05:39:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:28,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184898929] [2021-04-15 05:39:28,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635343154] [2021-04-15 05:39:28,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:28,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:39:28,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:28,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:39:28,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:28,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:28,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:28,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677112232] [2021-04-15 05:39:28,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:28,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:28,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:28,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:28,177 INFO L87 Difference]: Start difference. First operand 1252 states and 4887 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:28,255 INFO L93 Difference]: Finished difference Result 2128 states and 8197 transitions. [2021-04-15 05:39:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:28,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:28,265 INFO L225 Difference]: With dead ends: 2128 [2021-04-15 05:39:28,266 INFO L226 Difference]: Without dead ends: 2085 [2021-04-15 05:39:28,266 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2021-04-15 05:39:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1324. [2021-04-15 05:39:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1323 states have (on average 3.9554043839758126) internal successors, (5233), 1323 states have internal predecessors, (5233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:28,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 5233 transitions. [2021-04-15 05:39:28,311 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 5233 transitions. Word has length 23 [2021-04-15 05:39:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:28,311 INFO L480 AbstractCegarLoop]: Abstraction has 1324 states and 5233 transitions. [2021-04-15 05:39:28,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:28,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 5233 transitions. [2021-04-15 05:39:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:28,316 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:28,316 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:28,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-04-15 05:39:28,537 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:28,537 INFO L82 PathProgramCache]: Analyzing trace with hash 338647000, now seen corresponding path program 3 times [2021-04-15 05:39:28,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:28,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767548511] [2021-04-15 05:39:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:28,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767548511] [2021-04-15 05:39:28,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666579182] [2021-04-15 05:39:28,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:28,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 05:39:28,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:28,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:39:28,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:28,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:28,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:28,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606768913] [2021-04-15 05:39:28,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:28,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:28,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:28,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:28,700 INFO L87 Difference]: Start difference. First operand 1324 states and 5233 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:28,794 INFO L93 Difference]: Finished difference Result 2247 states and 8749 transitions. [2021-04-15 05:39:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:28,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:28,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:28,802 INFO L225 Difference]: With dead ends: 2247 [2021-04-15 05:39:28,802 INFO L226 Difference]: Without dead ends: 2204 [2021-04-15 05:39:28,803 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:28,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2021-04-15 05:39:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1380. [2021-04-15 05:39:28,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.989122552574329) internal successors, (5501), 1379 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 5501 transitions. [2021-04-15 05:39:28,861 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 5501 transitions. Word has length 23 [2021-04-15 05:39:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:28,862 INFO L480 AbstractCegarLoop]: Abstraction has 1380 states and 5501 transitions. [2021-04-15 05:39:28,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:28,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 5501 transitions. [2021-04-15 05:39:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:28,866 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:28,867 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:29,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:29,089 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:29,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:29,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1032459728, now seen corresponding path program 1 times [2021-04-15 05:39:29,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:29,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963032730] [2021-04-15 05:39:29,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:29,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963032730] [2021-04-15 05:39:29,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:29,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 05:39:29,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793615915] [2021-04-15 05:39:29,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 05:39:29,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:29,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 05:39:29,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 05:39:29,114 INFO L87 Difference]: Start difference. First operand 1380 states and 5501 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:29,146 INFO L93 Difference]: Finished difference Result 1413 states and 5603 transitions. [2021-04-15 05:39:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 05:39:29,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:29,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:29,151 INFO L225 Difference]: With dead ends: 1413 [2021-04-15 05:39:29,151 INFO L226 Difference]: Without dead ends: 1413 [2021-04-15 05:39:29,151 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-15 05:39:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-04-15 05:39:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1394. [2021-04-15 05:39:29,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 3.974156496769562) internal successors, (5536), 1393 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5536 transitions. [2021-04-15 05:39:29,201 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5536 transitions. Word has length 23 [2021-04-15 05:39:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:29,201 INFO L480 AbstractCegarLoop]: Abstraction has 1394 states and 5536 transitions. [2021-04-15 05:39:29,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5536 transitions. [2021-04-15 05:39:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:29,206 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:29,206 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:29,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-04-15 05:39:29,207 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:29,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1753811376, now seen corresponding path program 4 times [2021-04-15 05:39:29,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:29,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233505019] [2021-04-15 05:39:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:29,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233505019] [2021-04-15 05:39:29,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404464350] [2021-04-15 05:39:29,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:39:29,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:39:29,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:29,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:29,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:29,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:29,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:29,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567189573] [2021-04-15 05:39:29,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:29,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:29,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:29,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:29,354 INFO L87 Difference]: Start difference. First operand 1394 states and 5536 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:29,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:29,416 INFO L93 Difference]: Finished difference Result 2930 states and 11376 transitions. [2021-04-15 05:39:29,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:29,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:29,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:29,426 INFO L225 Difference]: With dead ends: 2930 [2021-04-15 05:39:29,427 INFO L226 Difference]: Without dead ends: 2887 [2021-04-15 05:39:29,427 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2021-04-15 05:39:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1526. [2021-04-15 05:39:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 4.028196721311476) internal successors, (6143), 1525 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 6143 transitions. [2021-04-15 05:39:29,487 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 6143 transitions. Word has length 23 [2021-04-15 05:39:29,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:29,487 INFO L480 AbstractCegarLoop]: Abstraction has 1526 states and 6143 transitions. [2021-04-15 05:39:29,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 6143 transitions. [2021-04-15 05:39:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:29,492 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:29,492 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:29,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:29,715 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:29,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:29,716 INFO L82 PathProgramCache]: Analyzing trace with hash -781102980, now seen corresponding path program 5 times [2021-04-15 05:39:29,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:29,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146115674] [2021-04-15 05:39:29,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:29,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146115674] [2021-04-15 05:39:29,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130623364] [2021-04-15 05:39:29,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:29,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 05:39:29,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:29,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:39:29,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:29,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:29,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:29,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499947658] [2021-04-15 05:39:29,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:29,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:29,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:29,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:29,858 INFO L87 Difference]: Start difference. First operand 1526 states and 6143 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:29,930 INFO L93 Difference]: Finished difference Result 2434 states and 9626 transitions. [2021-04-15 05:39:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:29,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:29,939 INFO L225 Difference]: With dead ends: 2434 [2021-04-15 05:39:29,939 INFO L226 Difference]: Without dead ends: 2391 [2021-04-15 05:39:29,939 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-04-15 05:39:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 1578. [2021-04-15 05:39:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1577 states have (on average 4.062777425491439) internal successors, (6407), 1577 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 6407 transitions. [2021-04-15 05:39:29,988 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 6407 transitions. Word has length 23 [2021-04-15 05:39:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:29,988 INFO L480 AbstractCegarLoop]: Abstraction has 1578 states and 6407 transitions. [2021-04-15 05:39:29,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 6407 transitions. [2021-04-15 05:39:29,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:29,995 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:29,995 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:30,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-04-15 05:39:30,217 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:30,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:30,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1742267756, now seen corresponding path program 6 times [2021-04-15 05:39:30,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:30,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235467178] [2021-04-15 05:39:30,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:30,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235467178] [2021-04-15 05:39:30,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882228670] [2021-04-15 05:39:30,293 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:39:30,328 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 05:39:30,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:30,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:30,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:30,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:30,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-04-15 05:39:30,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283192171] [2021-04-15 05:39:30,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:39:30,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:30,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:39:30,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:39:30,416 INFO L87 Difference]: Start difference. First operand 1578 states and 6407 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:30,522 INFO L93 Difference]: Finished difference Result 2600 states and 10380 transitions. [2021-04-15 05:39:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:39:30,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:30,530 INFO L225 Difference]: With dead ends: 2600 [2021-04-15 05:39:30,531 INFO L226 Difference]: Without dead ends: 2557 [2021-04-15 05:39:30,531 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 74.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:39:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2021-04-15 05:39:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 1678. [2021-04-15 05:39:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 4.128205128205129) internal successors, (6923), 1677 states have internal predecessors, (6923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:30,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 6923 transitions. [2021-04-15 05:39:30,581 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 6923 transitions. Word has length 23 [2021-04-15 05:39:30,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:30,581 INFO L480 AbstractCegarLoop]: Abstraction has 1678 states and 6923 transitions. [2021-04-15 05:39:30,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:30,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 6923 transitions. [2021-04-15 05:39:30,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:30,585 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:30,585 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:30,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-04-15 05:39:30,801 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:30,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:30,801 INFO L82 PathProgramCache]: Analyzing trace with hash -413926864, now seen corresponding path program 2 times [2021-04-15 05:39:30,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:30,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929857489] [2021-04-15 05:39:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:30,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929857489] [2021-04-15 05:39:30,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:30,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 05:39:30,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830022750] [2021-04-15 05:39:30,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 05:39:30,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:30,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 05:39:30,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 05:39:30,840 INFO L87 Difference]: Start difference. First operand 1678 states and 6923 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:30,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:30,891 INFO L93 Difference]: Finished difference Result 1899 states and 7725 transitions. [2021-04-15 05:39:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 05:39:30,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:30,896 INFO L225 Difference]: With dead ends: 1899 [2021-04-15 05:39:30,897 INFO L226 Difference]: Without dead ends: 1866 [2021-04-15 05:39:30,897 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 05:39:30,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-04-15 05:39:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1777. [2021-04-15 05:39:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 4.108671171171171) internal successors, (7297), 1776 states have internal predecessors, (7297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 7297 transitions. [2021-04-15 05:39:30,942 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 7297 transitions. Word has length 23 [2021-04-15 05:39:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:30,942 INFO L480 AbstractCegarLoop]: Abstraction has 1777 states and 7297 transitions. [2021-04-15 05:39:30,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 7297 transitions. [2021-04-15 05:39:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:30,946 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:30,946 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:30,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-04-15 05:39:30,946 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:30,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:30,947 INFO L82 PathProgramCache]: Analyzing trace with hash 97493908, now seen corresponding path program 2 times [2021-04-15 05:39:30,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:30,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837964086] [2021-04-15 05:39:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:30,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837964086] [2021-04-15 05:39:30,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639611893] [2021-04-15 05:39:30,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:31,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:39:31,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:31,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-04-15 05:39:31,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:31,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:31,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-04-15 05:39:31,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141376168] [2021-04-15 05:39:31,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:39:31,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:31,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:39:31,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:39:31,075 INFO L87 Difference]: Start difference. First operand 1777 states and 7297 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:31,233 INFO L93 Difference]: Finished difference Result 3584 states and 13842 transitions. [2021-04-15 05:39:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:39:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:31,242 INFO L225 Difference]: With dead ends: 3584 [2021-04-15 05:39:31,242 INFO L226 Difference]: Without dead ends: 3584 [2021-04-15 05:39:31,242 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:39:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2021-04-15 05:39:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 2158. [2021-04-15 05:39:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 2157 states have (on average 4.179879462216041) internal successors, (9016), 2157 states have internal predecessors, (9016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 9016 transitions. [2021-04-15 05:39:31,313 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 9016 transitions. Word has length 23 [2021-04-15 05:39:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:31,313 INFO L480 AbstractCegarLoop]: Abstraction has 2158 states and 9016 transitions. [2021-04-15 05:39:31,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 9016 transitions. [2021-04-15 05:39:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:31,318 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:31,319 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:31,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-04-15 05:39:31,533 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:31,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:31,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1352231348, now seen corresponding path program 3 times [2021-04-15 05:39:31,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:31,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785717460] [2021-04-15 05:39:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:31,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785717460] [2021-04-15 05:39:31,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346365808] [2021-04-15 05:39:31,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:31,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 05:39:31,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:31,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-04-15 05:39:31,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:31,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:31,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-04-15 05:39:31,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368076420] [2021-04-15 05:39:31,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:39:31,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:31,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:39:31,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:39:31,652 INFO L87 Difference]: Start difference. First operand 2158 states and 9016 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:31,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:31,933 INFO L93 Difference]: Finished difference Result 4126 states and 16268 transitions. [2021-04-15 05:39:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 05:39:31,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:31,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:31,942 INFO L225 Difference]: With dead ends: 4126 [2021-04-15 05:39:31,942 INFO L226 Difference]: Without dead ends: 4126 [2021-04-15 05:39:31,942 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-04-15 05:39:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-04-15 05:39:32,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 2337. [2021-04-15 05:39:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 2336 states have (on average 4.2555650684931505) internal successors, (9941), 2336 states have internal predecessors, (9941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 9941 transitions. [2021-04-15 05:39:32,022 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 9941 transitions. Word has length 23 [2021-04-15 05:39:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:32,022 INFO L480 AbstractCegarLoop]: Abstraction has 2337 states and 9941 transitions. [2021-04-15 05:39:32,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 9941 transitions. [2021-04-15 05:39:32,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:32,029 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:32,029 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:32,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:32,252 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:32,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:32,253 INFO L82 PathProgramCache]: Analyzing trace with hash -424342964, now seen corresponding path program 4 times [2021-04-15 05:39:32,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:32,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847350591] [2021-04-15 05:39:32,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:32,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847350591] [2021-04-15 05:39:32,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165102334] [2021-04-15 05:39:32,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:39:32,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:39:32,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:32,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:39:32,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:32,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:32,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:32,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481854869] [2021-04-15 05:39:32,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:32,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:32,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:32,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:32,385 INFO L87 Difference]: Start difference. First operand 2337 states and 9941 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:32,454 INFO L93 Difference]: Finished difference Result 2707 states and 11337 transitions. [2021-04-15 05:39:32,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:32,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:32,462 INFO L225 Difference]: With dead ends: 2707 [2021-04-15 05:39:32,462 INFO L226 Difference]: Without dead ends: 2643 [2021-04-15 05:39:32,462 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 33.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2021-04-15 05:39:32,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2343. [2021-04-15 05:39:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 2342 states have (on average 4.259180187873612) internal successors, (9975), 2342 states have internal predecessors, (9975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 9975 transitions. [2021-04-15 05:39:32,527 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 9975 transitions. Word has length 23 [2021-04-15 05:39:32,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:32,528 INFO L480 AbstractCegarLoop]: Abstraction has 2343 states and 9975 transitions. [2021-04-15 05:39:32,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 9975 transitions. [2021-04-15 05:39:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:32,534 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:32,534 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:32,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:32,757 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:32,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:32,758 INFO L82 PathProgramCache]: Analyzing trace with hash 63873728, now seen corresponding path program 5 times [2021-04-15 05:39:32,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:32,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823712287] [2021-04-15 05:39:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:32,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823712287] [2021-04-15 05:39:32,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35044472] [2021-04-15 05:39:32,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:32,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 05:39:32,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:32,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:39:32,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:32,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:32,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:32,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088468810] [2021-04-15 05:39:32,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:32,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:32,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:32,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:32,881 INFO L87 Difference]: Start difference. First operand 2343 states and 9975 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:32,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:32,960 INFO L93 Difference]: Finished difference Result 2722 states and 11385 transitions. [2021-04-15 05:39:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:32,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:32,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:32,968 INFO L225 Difference]: With dead ends: 2722 [2021-04-15 05:39:32,968 INFO L226 Difference]: Without dead ends: 2658 [2021-04-15 05:39:32,968 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:32,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2021-04-15 05:39:33,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2347. [2021-04-15 05:39:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2346 states have (on average 4.2621483375959075) internal successors, (9999), 2346 states have internal predecessors, (9999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 9999 transitions. [2021-04-15 05:39:33,068 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 9999 transitions. Word has length 23 [2021-04-15 05:39:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:33,068 INFO L480 AbstractCegarLoop]: Abstraction has 2347 states and 9999 transitions. [2021-04-15 05:39:33,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 9999 transitions. [2021-04-15 05:39:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:33,075 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:33,076 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:33,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:33,297 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:33,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:33,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1522443284, now seen corresponding path program 6 times [2021-04-15 05:39:33,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:33,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210994828] [2021-04-15 05:39:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:33,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210994828] [2021-04-15 05:39:33,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236676697] [2021-04-15 05:39:33,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:33,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 05:39:33,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:33,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:39:33,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:33,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:33,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-04-15 05:39:33,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390993214] [2021-04-15 05:39:33,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:39:33,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:33,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:39:33,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:33,440 INFO L87 Difference]: Start difference. First operand 2347 states and 9999 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:33,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:33,546 INFO L93 Difference]: Finished difference Result 3086 states and 12754 transitions. [2021-04-15 05:39:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 05:39:33,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:33,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:33,553 INFO L225 Difference]: With dead ends: 3086 [2021-04-15 05:39:33,553 INFO L226 Difference]: Without dead ends: 3022 [2021-04-15 05:39:33,554 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 05:39:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-04-15 05:39:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 2368. [2021-04-15 05:39:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2367 states have (on average 4.27291930713984) internal successors, (10114), 2367 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 10114 transitions. [2021-04-15 05:39:33,620 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 10114 transitions. Word has length 23 [2021-04-15 05:39:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:33,620 INFO L480 AbstractCegarLoop]: Abstraction has 2368 states and 10114 transitions. [2021-04-15 05:39:33,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 10114 transitions. [2021-04-15 05:39:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:33,626 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:33,626 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:33,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-04-15 05:39:33,850 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:33,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:33,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1523854228, now seen corresponding path program 3 times [2021-04-15 05:39:33,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:33,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227780046] [2021-04-15 05:39:33,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:39:33,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227780046] [2021-04-15 05:39:33,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:33,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 05:39:33,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279555069] [2021-04-15 05:39:33,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 05:39:33,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:33,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 05:39:33,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 05:39:33,872 INFO L87 Difference]: Start difference. First operand 2368 states and 10114 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:33,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:33,933 INFO L93 Difference]: Finished difference Result 2525 states and 10725 transitions. [2021-04-15 05:39:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 05:39:33,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:33,939 INFO L225 Difference]: With dead ends: 2525 [2021-04-15 05:39:33,939 INFO L226 Difference]: Without dead ends: 2525 [2021-04-15 05:39:33,939 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 05:39:33,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2021-04-15 05:39:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2414. [2021-04-15 05:39:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2413 states have (on average 4.261500207210941) internal successors, (10283), 2413 states have internal predecessors, (10283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 10283 transitions. [2021-04-15 05:39:33,995 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 10283 transitions. Word has length 23 [2021-04-15 05:39:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:33,995 INFO L480 AbstractCegarLoop]: Abstraction has 2414 states and 10283 transitions. [2021-04-15 05:39:33,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 10283 transitions. [2021-04-15 05:39:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:34,002 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:34,002 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:34,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-04-15 05:39:34,003 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:34,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1093628820, now seen corresponding path program 4 times [2021-04-15 05:39:34,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:34,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028406246] [2021-04-15 05:39:34,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:34,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028406246] [2021-04-15 05:39:34,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036706506] [2021-04-15 05:39:34,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:34,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:39:34,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:34,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-04-15 05:39:34,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:34,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:34,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-04-15 05:39:34,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812145258] [2021-04-15 05:39:34,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 05:39:34,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:34,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 05:39:34,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:34,113 INFO L87 Difference]: Start difference. First operand 2414 states and 10283 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:34,246 INFO L93 Difference]: Finished difference Result 3537 states and 14681 transitions. [2021-04-15 05:39:34,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:39:34,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:34,257 INFO L225 Difference]: With dead ends: 3537 [2021-04-15 05:39:34,257 INFO L226 Difference]: Without dead ends: 3537 [2021-04-15 05:39:34,257 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:39:34,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-04-15 05:39:34,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 2731. [2021-04-15 05:39:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2731 states, 2730 states have (on average 4.247252747252747) internal successors, (11595), 2730 states have internal predecessors, (11595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 11595 transitions. [2021-04-15 05:39:34,368 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 11595 transitions. Word has length 23 [2021-04-15 05:39:34,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:34,368 INFO L480 AbstractCegarLoop]: Abstraction has 2731 states and 11595 transitions. [2021-04-15 05:39:34,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 11595 transitions. [2021-04-15 05:39:34,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:34,376 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:34,376 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:34,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-04-15 05:39:34,597 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:34,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1241815956, now seen corresponding path program 5 times [2021-04-15 05:39:34,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:34,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970341497] [2021-04-15 05:39:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:34,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970341497] [2021-04-15 05:39:34,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065399345] [2021-04-15 05:39:34,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:34,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 05:39:34,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:34,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-04-15 05:39:34,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:34,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:34,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-04-15 05:39:34,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830280785] [2021-04-15 05:39:34,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:39:34,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:34,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:39:34,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:39:34,712 INFO L87 Difference]: Start difference. First operand 2731 states and 11595 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:34,886 INFO L93 Difference]: Finished difference Result 5435 states and 21973 transitions. [2021-04-15 05:39:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:39:34,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:34,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:34,902 INFO L225 Difference]: With dead ends: 5435 [2021-04-15 05:39:34,902 INFO L226 Difference]: Without dead ends: 5435 [2021-04-15 05:39:34,902 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 64.0ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:39:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5435 states. [2021-04-15 05:39:34,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5435 to 3753. [2021-04-15 05:39:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 3752 states have (on average 4.30863539445629) internal successors, (16166), 3752 states have internal predecessors, (16166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:35,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 16166 transitions. [2021-04-15 05:39:35,010 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 16166 transitions. Word has length 23 [2021-04-15 05:39:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:35,010 INFO L480 AbstractCegarLoop]: Abstraction has 3753 states and 16166 transitions. [2021-04-15 05:39:35,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:35,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 16166 transitions. [2021-04-15 05:39:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-15 05:39:35,020 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:35,020 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:35,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-04-15 05:39:35,233 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:35,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:35,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1311709520, now seen corresponding path program 6 times [2021-04-15 05:39:35,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:35,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738934772] [2021-04-15 05:39:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:35,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738934772] [2021-04-15 05:39:35,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391046038] [2021-04-15 05:39:35,254 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:35,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 05:39:35,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:35,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-04-15 05:39:35,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:35,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:35,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-04-15 05:39:35,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635697480] [2021-04-15 05:39:35,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:39:35,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:35,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:39:35,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:39:35,339 INFO L87 Difference]: Start difference. First operand 3753 states and 16166 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:35,594 INFO L93 Difference]: Finished difference Result 6635 states and 27289 transitions. [2021-04-15 05:39:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 05:39:35,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-04-15 05:39:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:35,612 INFO L225 Difference]: With dead ends: 6635 [2021-04-15 05:39:35,613 INFO L226 Difference]: Without dead ends: 6635 [2021-04-15 05:39:35,613 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-04-15 05:39:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6635 states. [2021-04-15 05:39:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6635 to 4003. [2021-04-15 05:39:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 4002 states have (on average 4.365817091454272) internal successors, (17472), 4002 states have internal predecessors, (17472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 17472 transitions. [2021-04-15 05:39:35,779 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 17472 transitions. Word has length 23 [2021-04-15 05:39:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:35,779 INFO L480 AbstractCegarLoop]: Abstraction has 4003 states and 17472 transitions. [2021-04-15 05:39:35,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 17472 transitions. [2021-04-15 05:39:35,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:35,789 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:35,790 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:36,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-04-15 05:39:36,009 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:36,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1126765012, now seen corresponding path program 7 times [2021-04-15 05:39:36,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:36,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728745450] [2021-04-15 05:39:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:36,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728745450] [2021-04-15 05:39:36,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191985183] [2021-04-15 05:39:36,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:36,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:39:36,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:36,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:36,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-04-15 05:39:36,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932061918] [2021-04-15 05:39:36,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 05:39:36,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:36,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 05:39:36,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:39:36,154 INFO L87 Difference]: Start difference. First operand 4003 states and 17472 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:36,365 INFO L93 Difference]: Finished difference Result 8080 states and 33388 transitions. [2021-04-15 05:39:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 05:39:36,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:36,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:36,389 INFO L225 Difference]: With dead ends: 8080 [2021-04-15 05:39:36,389 INFO L226 Difference]: Without dead ends: 7806 [2021-04-15 05:39:36,389 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-04-15 05:39:36,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7806 states. [2021-04-15 05:39:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7806 to 5496. [2021-04-15 05:39:36,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5496 states, 5495 states have (on average 4.4049135577798) internal successors, (24205), 5495 states have internal predecessors, (24205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:36,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 24205 transitions. [2021-04-15 05:39:36,561 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 24205 transitions. Word has length 25 [2021-04-15 05:39:36,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:36,562 INFO L480 AbstractCegarLoop]: Abstraction has 5496 states and 24205 transitions. [2021-04-15 05:39:36,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 24205 transitions. [2021-04-15 05:39:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:36,576 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:36,576 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:36,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-04-15 05:39:36,777 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:36,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:36,777 INFO L82 PathProgramCache]: Analyzing trace with hash -838332880, now seen corresponding path program 4 times [2021-04-15 05:39:36,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:36,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584126029] [2021-04-15 05:39:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:36,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584126029] [2021-04-15 05:39:36,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115224155] [2021-04-15 05:39:36,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:36,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:39:36,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:36,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:39:36,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:36,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:36,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:39:36,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769497183] [2021-04-15 05:39:36,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:39:36,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:36,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:39:36,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:39:36,934 INFO L87 Difference]: Start difference. First operand 5496 states and 24205 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:37,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:37,038 INFO L93 Difference]: Finished difference Result 7686 states and 32613 transitions. [2021-04-15 05:39:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:39:37,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:37,098 INFO L225 Difference]: With dead ends: 7686 [2021-04-15 05:39:37,098 INFO L226 Difference]: Without dead ends: 7610 [2021-04-15 05:39:37,098 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:39:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2021-04-15 05:39:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 5750. [2021-04-15 05:39:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5749 states have (on average 4.412071664637328) internal successors, (25365), 5749 states have internal predecessors, (25365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 25365 transitions. [2021-04-15 05:39:37,216 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 25365 transitions. Word has length 25 [2021-04-15 05:39:37,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:37,216 INFO L480 AbstractCegarLoop]: Abstraction has 5750 states and 25365 transitions. [2021-04-15 05:39:37,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 25365 transitions. [2021-04-15 05:39:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:37,228 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:37,228 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:37,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:37,429 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:37,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:37,429 INFO L82 PathProgramCache]: Analyzing trace with hash 260787888, now seen corresponding path program 1 times [2021-04-15 05:39:37,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:37,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526933382] [2021-04-15 05:39:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:37,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526933382] [2021-04-15 05:39:37,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798121898] [2021-04-15 05:39:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:37,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:39:37,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:37,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:37,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-04-15 05:39:37,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938515172] [2021-04-15 05:39:37,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:39:37,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:37,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:39:37,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:39:37,582 INFO L87 Difference]: Start difference. First operand 5750 states and 25365 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:37,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:37,991 INFO L93 Difference]: Finished difference Result 13992 states and 58011 transitions. [2021-04-15 05:39:37,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-15 05:39:37,991 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:37,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:38,023 INFO L225 Difference]: With dead ends: 13992 [2021-04-15 05:39:38,023 INFO L226 Difference]: Without dead ends: 13926 [2021-04-15 05:39:38,023 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 186.6ms TimeCoverageRelationStatistics Valid=182, Invalid=324, Unknown=0, NotChecked=0, Total=506 [2021-04-15 05:39:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13926 states. [2021-04-15 05:39:38,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13926 to 7249. [2021-04-15 05:39:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7249 states, 7248 states have (on average 4.467301324503311) internal successors, (32379), 7248 states have internal predecessors, (32379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:38,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 32379 transitions. [2021-04-15 05:39:38,366 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 32379 transitions. Word has length 25 [2021-04-15 05:39:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:38,367 INFO L480 AbstractCegarLoop]: Abstraction has 7249 states and 32379 transitions. [2021-04-15 05:39:38,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:38,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 32379 transitions. [2021-04-15 05:39:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:38,385 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:38,385 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:38,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-04-15 05:39:38,586 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:38,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:38,586 INFO L82 PathProgramCache]: Analyzing trace with hash 330681452, now seen corresponding path program 2 times [2021-04-15 05:39:38,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:38,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814697623] [2021-04-15 05:39:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:38,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814697623] [2021-04-15 05:39:38,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953551030] [2021-04-15 05:39:38,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:38,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:39:38,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:38,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:39:38,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:38,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:38,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-04-15 05:39:38,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614083791] [2021-04-15 05:39:38,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:39:38,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:38,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:39:38,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:39:38,751 INFO L87 Difference]: Start difference. First operand 7249 states and 32379 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:39,356 INFO L93 Difference]: Finished difference Result 12594 states and 53597 transitions. [2021-04-15 05:39:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-15 05:39:39,357 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:39,393 INFO L225 Difference]: With dead ends: 12594 [2021-04-15 05:39:39,393 INFO L226 Difference]: Without dead ends: 12594 [2021-04-15 05:39:39,393 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 288.2ms TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2021-04-15 05:39:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12594 states. [2021-04-15 05:39:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12594 to 8788. [2021-04-15 05:39:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8788 states, 8787 states have (on average 4.496073745305565) internal successors, (39507), 8787 states have internal predecessors, (39507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8788 states to 8788 states and 39507 transitions. [2021-04-15 05:39:39,679 INFO L78 Accepts]: Start accepts. Automaton has 8788 states and 39507 transitions. Word has length 25 [2021-04-15 05:39:39,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:39,679 INFO L480 AbstractCegarLoop]: Abstraction has 8788 states and 39507 transitions. [2021-04-15 05:39:39,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 8788 states and 39507 transitions. [2021-04-15 05:39:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:39,698 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:39,698 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:39,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:39,905 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:39,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:39,905 INFO L82 PathProgramCache]: Analyzing trace with hash -7958540, now seen corresponding path program 3 times [2021-04-15 05:39:39,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:39,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091132836] [2021-04-15 05:39:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:39,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091132836] [2021-04-15 05:39:39,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608866654] [2021-04-15 05:39:39,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:39:40,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 05:39:40,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:40,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-15 05:39:40,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:40,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:40,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-04-15 05:39:40,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204511207] [2021-04-15 05:39:40,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-15 05:39:40,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:40,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-15 05:39:40,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-04-15 05:39:40,133 INFO L87 Difference]: Start difference. First operand 8788 states and 39507 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:40,399 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2021-04-15 05:39:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:40,997 INFO L93 Difference]: Finished difference Result 29971 states and 129329 transitions. [2021-04-15 05:39:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-04-15 05:39:40,998 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:41,103 INFO L225 Difference]: With dead ends: 29971 [2021-04-15 05:39:41,104 INFO L226 Difference]: Without dead ends: 29848 [2021-04-15 05:39:41,104 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 438.4ms TimeCoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2021-04-15 05:39:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29848 states. [2021-04-15 05:39:41,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29848 to 14478. [2021-04-15 05:39:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14478 states, 14477 states have (on average 4.563859915728397) internal successors, (66071), 14477 states have internal predecessors, (66071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14478 states to 14478 states and 66071 transitions. [2021-04-15 05:39:41,773 INFO L78 Accepts]: Start accepts. Automaton has 14478 states and 66071 transitions. Word has length 25 [2021-04-15 05:39:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:41,773 INFO L480 AbstractCegarLoop]: Abstraction has 14478 states and 66071 transitions. [2021-04-15 05:39:41,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 14478 states and 66071 transitions. [2021-04-15 05:39:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:41,807 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:41,807 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:42,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-04-15 05:39:42,025 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:42,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:42,025 INFO L82 PathProgramCache]: Analyzing trace with hash 209069450, now seen corresponding path program 4 times [2021-04-15 05:39:42,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:42,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479390574] [2021-04-15 05:39:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:42,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479390574] [2021-04-15 05:39:42,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714763606] [2021-04-15 05:39:42,084 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:42,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:39:42,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:42,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-15 05:39:42,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:42,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:42,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-04-15 05:39:42,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508904243] [2021-04-15 05:39:42,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-15 05:39:42,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:42,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-15 05:39:42,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-04-15 05:39:42,210 INFO L87 Difference]: Start difference. First operand 14478 states and 66071 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:42,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:42,956 INFO L93 Difference]: Finished difference Result 31001 states and 134975 transitions. [2021-04-15 05:39:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-15 05:39:42,956 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:42,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:43,187 INFO L225 Difference]: With dead ends: 31001 [2021-04-15 05:39:43,187 INFO L226 Difference]: Without dead ends: 30851 [2021-04-15 05:39:43,188 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 299.1ms TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2021-04-15 05:39:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30851 states. [2021-04-15 05:39:43,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30851 to 21508. [2021-04-15 05:39:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21508 states, 21507 states have (on average 4.549309527130702) internal successors, (97842), 21507 states have internal predecessors, (97842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:43,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21508 states to 21508 states and 97842 transitions. [2021-04-15 05:39:43,939 INFO L78 Accepts]: Start accepts. Automaton has 21508 states and 97842 transitions. Word has length 25 [2021-04-15 05:39:43,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:43,939 INFO L480 AbstractCegarLoop]: Abstraction has 21508 states and 97842 transitions. [2021-04-15 05:39:43,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:43,939 INFO L276 IsEmpty]: Start isEmpty. Operand 21508 states and 97842 transitions. [2021-04-15 05:39:43,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:43,995 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:43,995 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:44,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:44,197 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:44,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:44,198 INFO L82 PathProgramCache]: Analyzing trace with hash -856581012, now seen corresponding path program 5 times [2021-04-15 05:39:44,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:44,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9553160] [2021-04-15 05:39:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:44,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9553160] [2021-04-15 05:39:44,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213928689] [2021-04-15 05:39:44,393 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:44,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:39:44,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:44,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:39:44,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:44,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:44,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-04-15 05:39:44,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305090899] [2021-04-15 05:39:44,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-15 05:39:44,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:44,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-15 05:39:44,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-04-15 05:39:44,569 INFO L87 Difference]: Start difference. First operand 21508 states and 97842 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:45,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:45,104 INFO L93 Difference]: Finished difference Result 27651 states and 123756 transitions. [2021-04-15 05:39:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 05:39:45,105 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:45,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:45,277 INFO L225 Difference]: With dead ends: 27651 [2021-04-15 05:39:45,277 INFO L226 Difference]: Without dead ends: 27523 [2021-04-15 05:39:45,279 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 159.8ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-04-15 05:39:45,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27523 states. [2021-04-15 05:39:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27523 to 21550. [2021-04-15 05:39:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21550 states, 21549 states have (on average 4.550559190681702) internal successors, (98060), 21549 states have internal predecessors, (98060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21550 states to 21550 states and 98060 transitions. [2021-04-15 05:39:46,019 INFO L78 Accepts]: Start accepts. Automaton has 21550 states and 98060 transitions. Word has length 25 [2021-04-15 05:39:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:46,019 INFO L480 AbstractCegarLoop]: Abstraction has 21550 states and 98060 transitions. [2021-04-15 05:39:46,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 21550 states and 98060 transitions. [2021-04-15 05:39:46,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:46,125 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:46,125 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:46,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-04-15 05:39:46,326 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:46,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1236735550, now seen corresponding path program 6 times [2021-04-15 05:39:46,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:46,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567947213] [2021-04-15 05:39:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:46,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567947213] [2021-04-15 05:39:46,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108299927] [2021-04-15 05:39:46,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:46,424 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 05:39:46,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:46,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:39:46,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:46,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:46,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-04-15 05:39:46,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549700101] [2021-04-15 05:39:46,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:39:46,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:46,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:39:46,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:39:46,519 INFO L87 Difference]: Start difference. First operand 21550 states and 98060 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:46,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:46,956 INFO L93 Difference]: Finished difference Result 22500 states and 101338 transitions. [2021-04-15 05:39:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 05:39:46,957 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:46,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:47,034 INFO L225 Difference]: With dead ends: 22500 [2021-04-15 05:39:47,035 INFO L226 Difference]: Without dead ends: 22316 [2021-04-15 05:39:47,035 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 123.7ms TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-04-15 05:39:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22316 states. [2021-04-15 05:39:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22316 to 21544. [2021-04-15 05:39:47,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21544 states, 21543 states have (on average 4.5494592210926985) internal successors, (98009), 21543 states have internal predecessors, (98009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:47,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21544 states to 21544 states and 98009 transitions. [2021-04-15 05:39:47,725 INFO L78 Accepts]: Start accepts. Automaton has 21544 states and 98009 transitions. Word has length 25 [2021-04-15 05:39:47,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:47,725 INFO L480 AbstractCegarLoop]: Abstraction has 21544 states and 98009 transitions. [2021-04-15 05:39:47,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 21544 states and 98009 transitions. [2021-04-15 05:39:47,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:47,778 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:47,778 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:47,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-04-15 05:39:47,981 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:47,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:47,981 INFO L82 PathProgramCache]: Analyzing trace with hash -556155216, now seen corresponding path program 7 times [2021-04-15 05:39:47,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:47,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459057037] [2021-04-15 05:39:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:48,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459057037] [2021-04-15 05:39:48,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186199195] [2021-04-15 05:39:48,033 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:48,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-15 05:39:48,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:48,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:48,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-04-15 05:39:48,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231082757] [2021-04-15 05:39:48,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-15 05:39:48,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:48,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-15 05:39:48,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-04-15 05:39:48,171 INFO L87 Difference]: Start difference. First operand 21544 states and 98009 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:49,139 INFO L93 Difference]: Finished difference Result 72723 states and 315638 transitions. [2021-04-15 05:39:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-15 05:39:49,140 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:49,413 INFO L225 Difference]: With dead ends: 72723 [2021-04-15 05:39:49,413 INFO L226 Difference]: Without dead ends: 72477 [2021-04-15 05:39:49,413 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 197.0ms TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2021-04-15 05:39:49,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72477 states. [2021-04-15 05:39:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72477 to 44928. [2021-04-15 05:39:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44928 states, 44927 states have (on average 4.539052240300933) internal successors, (203926), 44927 states have internal predecessors, (203926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44928 states to 44928 states and 203926 transitions. [2021-04-15 05:39:51,250 INFO L78 Accepts]: Start accepts. Automaton has 44928 states and 203926 transitions. Word has length 25 [2021-04-15 05:39:51,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:51,251 INFO L480 AbstractCegarLoop]: Abstraction has 44928 states and 203926 transitions. [2021-04-15 05:39:51,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 44928 states and 203926 transitions. [2021-04-15 05:39:51,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:51,674 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:51,674 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:51,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-04-15 05:39:51,875 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:51,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:51,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1592641320, now seen corresponding path program 8 times [2021-04-15 05:39:51,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:51,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346369889] [2021-04-15 05:39:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:51,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346369889] [2021-04-15 05:39:51,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135562045] [2021-04-15 05:39:51,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:51,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:39:51,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:51,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:39:51,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:52,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:52,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-04-15 05:39:52,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948091615] [2021-04-15 05:39:52,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:39:52,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:52,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:39:52,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:39:52,074 INFO L87 Difference]: Start difference. First operand 44928 states and 203926 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:52,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:52,528 INFO L93 Difference]: Finished difference Result 45875 states and 207187 transitions. [2021-04-15 05:39:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 05:39:52,528 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:52,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:52,698 INFO L225 Difference]: With dead ends: 45875 [2021-04-15 05:39:52,698 INFO L226 Difference]: Without dead ends: 45705 [2021-04-15 05:39:52,698 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-04-15 05:39:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45705 states. [2021-04-15 05:39:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45705 to 44959. [2021-04-15 05:39:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44959 states, 44958 states have (on average 4.537568397170693) internal successors, (204000), 44958 states have internal predecessors, (204000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44959 states to 44959 states and 204000 transitions. [2021-04-15 05:39:54,219 INFO L78 Accepts]: Start accepts. Automaton has 44959 states and 204000 transitions. Word has length 25 [2021-04-15 05:39:54,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:54,219 INFO L480 AbstractCegarLoop]: Abstraction has 44959 states and 204000 transitions. [2021-04-15 05:39:54,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 44959 states and 204000 transitions. [2021-04-15 05:39:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:54,309 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:54,309 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:54,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:54,509 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:54,510 INFO L82 PathProgramCache]: Analyzing trace with hash 256048560, now seen corresponding path program 1 times [2021-04-15 05:39:54,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:54,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729495630] [2021-04-15 05:39:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:54,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729495630] [2021-04-15 05:39:54,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738196845] [2021-04-15 05:39:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:54,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:39:54,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:54,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:54,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-04-15 05:39:54,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503917700] [2021-04-15 05:39:54,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 05:39:54,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:54,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 05:39:54,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:39:54,621 INFO L87 Difference]: Start difference. First operand 44959 states and 204000 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:55,531 INFO L93 Difference]: Finished difference Result 49005 states and 219986 transitions. [2021-04-15 05:39:55,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-15 05:39:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:55,762 INFO L225 Difference]: With dead ends: 49005 [2021-04-15 05:39:55,762 INFO L226 Difference]: Without dead ends: 48987 [2021-04-15 05:39:55,762 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-04-15 05:39:55,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48987 states. [2021-04-15 05:39:56,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48987 to 45643. [2021-04-15 05:39:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45643 states, 45642 states have (on average 4.534726786731519) internal successors, (206974), 45642 states have internal predecessors, (206974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45643 states to 45643 states and 206974 transitions. [2021-04-15 05:39:57,192 INFO L78 Accepts]: Start accepts. Automaton has 45643 states and 206974 transitions. Word has length 25 [2021-04-15 05:39:57,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:57,192 INFO L480 AbstractCegarLoop]: Abstraction has 45643 states and 206974 transitions. [2021-04-15 05:39:57,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 45643 states and 206974 transitions. [2021-04-15 05:39:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:39:57,289 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:57,289 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:57,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-04-15 05:39:57,490 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash 706782640, now seen corresponding path program 2 times [2021-04-15 05:39:57,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:57,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167538593] [2021-04-15 05:39:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:57,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167538593] [2021-04-15 05:39:57,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475347367] [2021-04-15 05:39:57,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:39:57,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:39:57,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:39:57,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:39:57,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:39:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:57,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:39:57,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-04-15 05:39:57,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660086842] [2021-04-15 05:39:57,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 05:39:57,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:57,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 05:39:57,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:39:57,615 INFO L87 Difference]: Start difference. First operand 45643 states and 206974 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:39:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:58,561 INFO L93 Difference]: Finished difference Result 52382 states and 233498 transitions. [2021-04-15 05:39:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 05:39:58,562 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:39:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:58,778 INFO L225 Difference]: With dead ends: 52382 [2021-04-15 05:39:58,778 INFO L226 Difference]: Without dead ends: 52382 [2021-04-15 05:39:58,779 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-04-15 05:39:58,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52382 states. [2021-04-15 05:39:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52382 to 45586. [2021-04-15 05:39:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45586 states, 45585 states have (on average 4.529231106723703) internal successors, (206465), 45585 states have internal predecessors, (206465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45586 states to 45586 states and 206465 transitions. [2021-04-15 05:40:00,098 INFO L78 Accepts]: Start accepts. Automaton has 45586 states and 206465 transitions. Word has length 25 [2021-04-15 05:40:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:00,099 INFO L480 AbstractCegarLoop]: Abstraction has 45586 states and 206465 transitions. [2021-04-15 05:40:00,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 45586 states and 206465 transitions. [2021-04-15 05:40:00,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:00,200 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:00,200 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:00,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-04-15 05:40:00,401 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:00,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1083621228, now seen corresponding path program 3 times [2021-04-15 05:40:00,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:00,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107751305] [2021-04-15 05:40:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:00,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107751305] [2021-04-15 05:40:00,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648733779] [2021-04-15 05:40:00,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:00,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 05:40:00,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:00,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:40:00,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:00,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-04-15 05:40:00,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-04-15 05:40:00,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153746983] [2021-04-15 05:40:00,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 05:40:00,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:00,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 05:40:00,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:40:00,524 INFO L87 Difference]: Start difference. First operand 45586 states and 206465 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:01,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:01,486 INFO L93 Difference]: Finished difference Result 57895 states and 256438 transitions. [2021-04-15 05:40:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 05:40:01,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:01,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:01,766 INFO L225 Difference]: With dead ends: 57895 [2021-04-15 05:40:01,766 INFO L226 Difference]: Without dead ends: 57813 [2021-04-15 05:40:01,767 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-04-15 05:40:01,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57813 states. [2021-04-15 05:40:03,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57813 to 48438. [2021-04-15 05:40:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48438 states, 48437 states have (on average 4.527179635402688) internal successors, (219283), 48437 states have internal predecessors, (219283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:03,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48438 states to 48438 states and 219283 transitions. [2021-04-15 05:40:03,446 INFO L78 Accepts]: Start accepts. Automaton has 48438 states and 219283 transitions. Word has length 25 [2021-04-15 05:40:03,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:03,446 INFO L480 AbstractCegarLoop]: Abstraction has 48438 states and 219283 transitions. [2021-04-15 05:40:03,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:03,446 INFO L276 IsEmpty]: Start isEmpty. Operand 48438 states and 219283 transitions. [2021-04-15 05:40:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:03,556 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:03,557 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:03,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:03,757 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:03,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:03,757 INFO L82 PathProgramCache]: Analyzing trace with hash 137417170, now seen corresponding path program 5 times [2021-04-15 05:40:03,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:03,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505261798] [2021-04-15 05:40:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:03,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505261798] [2021-04-15 05:40:03,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480926932] [2021-04-15 05:40:03,808 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:03,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:40:03,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:03,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:40:03,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:03,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:03,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:40:03,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010567051] [2021-04-15 05:40:03,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:40:03,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:03,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:40:03,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:40:03,879 INFO L87 Difference]: Start difference. First operand 48438 states and 219283 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:04,762 INFO L93 Difference]: Finished difference Result 50929 states and 229156 transitions. [2021-04-15 05:40:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:40:04,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:05,013 INFO L225 Difference]: With dead ends: 50929 [2021-04-15 05:40:05,014 INFO L226 Difference]: Without dead ends: 50853 [2021-04-15 05:40:05,014 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:40:05,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50853 states. [2021-04-15 05:40:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50853 to 48508. [2021-04-15 05:40:06,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48508 states, 48507 states have (on average 4.528872121549467) internal successors, (219682), 48507 states have internal predecessors, (219682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48508 states to 48508 states and 219682 transitions. [2021-04-15 05:40:06,485 INFO L78 Accepts]: Start accepts. Automaton has 48508 states and 219682 transitions. Word has length 25 [2021-04-15 05:40:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:06,485 INFO L480 AbstractCegarLoop]: Abstraction has 48508 states and 219682 transitions. [2021-04-15 05:40:06,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 48508 states and 219682 transitions. [2021-04-15 05:40:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:06,586 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:06,586 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:06,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-04-15 05:40:06,787 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:06,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:06,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1704182322, now seen corresponding path program 6 times [2021-04-15 05:40:06,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:06,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96258923] [2021-04-15 05:40:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:06,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96258923] [2021-04-15 05:40:06,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337965446] [2021-04-15 05:40:06,852 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:06,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 05:40:06,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:06,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:40:06,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:06,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:06,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:40:06,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227246128] [2021-04-15 05:40:06,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:40:06,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:06,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:40:06,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:40:06,944 INFO L87 Difference]: Start difference. First operand 48508 states and 219682 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:07,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:07,384 INFO L93 Difference]: Finished difference Result 51004 states and 229666 transitions. [2021-04-15 05:40:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:40:07,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:07,558 INFO L225 Difference]: With dead ends: 51004 [2021-04-15 05:40:07,559 INFO L226 Difference]: Without dead ends: 50928 [2021-04-15 05:40:07,559 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:40:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50928 states. [2021-04-15 05:40:08,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50928 to 48683. [2021-04-15 05:40:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48683 states, 48682 states have (on average 4.53103816605727) internal successors, (220580), 48682 states have internal predecessors, (220580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48683 states to 48683 states and 220580 transitions. [2021-04-15 05:40:09,675 INFO L78 Accepts]: Start accepts. Automaton has 48683 states and 220580 transitions. Word has length 25 [2021-04-15 05:40:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:09,675 INFO L480 AbstractCegarLoop]: Abstraction has 48683 states and 220580 transitions. [2021-04-15 05:40:09,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 48683 states and 220580 transitions. [2021-04-15 05:40:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:09,816 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:09,816 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:10,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:10,017 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:10,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:10,017 INFO L82 PathProgramCache]: Analyzing trace with hash -2017642098, now seen corresponding path program 7 times [2021-04-15 05:40:10,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:10,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029239444] [2021-04-15 05:40:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:10,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029239444] [2021-04-15 05:40:10,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303496956] [2021-04-15 05:40:10,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:10,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:40:10,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:10,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:10,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:40:10,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134957220] [2021-04-15 05:40:10,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:40:10,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:10,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:40:10,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:40:10,182 INFO L87 Difference]: Start difference. First operand 48683 states and 220580 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:10,686 INFO L93 Difference]: Finished difference Result 50388 states and 227448 transitions. [2021-04-15 05:40:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:40:10,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:10,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:10,890 INFO L225 Difference]: With dead ends: 50388 [2021-04-15 05:40:10,891 INFO L226 Difference]: Without dead ends: 50312 [2021-04-15 05:40:10,891 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:40:10,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50312 states. [2021-04-15 05:40:12,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50312 to 48763. [2021-04-15 05:40:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48763 states, 48762 states have (on average 4.531930601698043) internal successors, (220986), 48762 states have internal predecessors, (220986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48763 states to 48763 states and 220986 transitions. [2021-04-15 05:40:12,352 INFO L78 Accepts]: Start accepts. Automaton has 48763 states and 220986 transitions. Word has length 25 [2021-04-15 05:40:12,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:12,352 INFO L480 AbstractCegarLoop]: Abstraction has 48763 states and 220986 transitions. [2021-04-15 05:40:12,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:12,352 INFO L276 IsEmpty]: Start isEmpty. Operand 48763 states and 220986 transitions. [2021-04-15 05:40:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:12,457 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:12,457 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:12,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-04-15 05:40:12,658 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:12,658 INFO L82 PathProgramCache]: Analyzing trace with hash -660900726, now seen corresponding path program 8 times [2021-04-15 05:40:12,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:12,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160297155] [2021-04-15 05:40:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:40:12,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160297155] [2021-04-15 05:40:12,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575582142] [2021-04-15 05:40:12,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:12,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:40:12,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:12,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:40:12,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:40:12,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:12,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:40:12,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292792376] [2021-04-15 05:40:12,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:40:12,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:12,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:40:12,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:40:12,818 INFO L87 Difference]: Start difference. First operand 48763 states and 220986 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:13,774 INFO L93 Difference]: Finished difference Result 49777 states and 225048 transitions. [2021-04-15 05:40:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:40:13,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:13,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:14,016 INFO L225 Difference]: With dead ends: 49777 [2021-04-15 05:40:14,016 INFO L226 Difference]: Without dead ends: 49701 [2021-04-15 05:40:14,016 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:40:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49701 states. [2021-04-15 05:40:15,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49701 to 48821. [2021-04-15 05:40:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48821 states, 48820 states have (on average 4.532548136009832) internal successors, (221279), 48820 states have internal predecessors, (221279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48821 states to 48821 states and 221279 transitions. [2021-04-15 05:40:15,494 INFO L78 Accepts]: Start accepts. Automaton has 48821 states and 221279 transitions. Word has length 25 [2021-04-15 05:40:15,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:15,494 INFO L480 AbstractCegarLoop]: Abstraction has 48821 states and 221279 transitions. [2021-04-15 05:40:15,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 48821 states and 221279 transitions. [2021-04-15 05:40:15,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:15,613 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:15,613 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:15,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-04-15 05:40:15,813 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:15,814 INFO L82 PathProgramCache]: Analyzing trace with hash -186895918, now seen corresponding path program 9 times [2021-04-15 05:40:15,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:15,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092535090] [2021-04-15 05:40:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:15,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092535090] [2021-04-15 05:40:15,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374732538] [2021-04-15 05:40:15,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:16,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 05:40:16,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:16,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:40:16,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:16,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:16,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-04-15 05:40:16,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477525846] [2021-04-15 05:40:16,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-15 05:40:16,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:16,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-15 05:40:16,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-04-15 05:40:16,139 INFO L87 Difference]: Start difference. First operand 48821 states and 221279 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:16,744 INFO L93 Difference]: Finished difference Result 61471 states and 276775 transitions. [2021-04-15 05:40:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:40:16,745 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:16,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:17,456 INFO L225 Difference]: With dead ends: 61471 [2021-04-15 05:40:17,456 INFO L226 Difference]: Without dead ends: 61261 [2021-04-15 05:40:17,457 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 208.9ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-04-15 05:40:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61261 states. [2021-04-15 05:40:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61261 to 49380. [2021-04-15 05:40:18,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49380 states, 49379 states have (on average 4.533911176816056) internal successors, (223880), 49379 states have internal predecessors, (223880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49380 states to 49380 states and 223880 transitions. [2021-04-15 05:40:19,099 INFO L78 Accepts]: Start accepts. Automaton has 49380 states and 223880 transitions. Word has length 25 [2021-04-15 05:40:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:19,099 INFO L480 AbstractCegarLoop]: Abstraction has 49380 states and 223880 transitions. [2021-04-15 05:40:19,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 49380 states and 223880 transitions. [2021-04-15 05:40:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:19,211 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:19,211 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:19,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-04-15 05:40:19,411 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:19,412 INFO L82 PathProgramCache]: Analyzing trace with hash -567050456, now seen corresponding path program 10 times [2021-04-15 05:40:19,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:19,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769460959] [2021-04-15 05:40:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:19,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769460959] [2021-04-15 05:40:19,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924123366] [2021-04-15 05:40:19,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:19,556 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:40:19,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:19,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:40:19,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:19,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:19,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-04-15 05:40:19,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778803728] [2021-04-15 05:40:19,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-15 05:40:19,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:19,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-15 05:40:19,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-04-15 05:40:19,677 INFO L87 Difference]: Start difference. First operand 49380 states and 223880 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:20,173 INFO L93 Difference]: Finished difference Result 50018 states and 225904 transitions. [2021-04-15 05:40:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 05:40:20,173 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:20,388 INFO L225 Difference]: With dead ends: 50018 [2021-04-15 05:40:20,388 INFO L226 Difference]: Without dead ends: 49718 [2021-04-15 05:40:20,388 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 180.1ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-04-15 05:40:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49718 states. [2021-04-15 05:40:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49718 to 49354. [2021-04-15 05:40:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49354 states, 49353 states have (on average 4.531072072619699) internal successors, (223622), 49353 states have internal predecessors, (223622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49354 states to 49354 states and 223622 transitions. [2021-04-15 05:40:21,975 INFO L78 Accepts]: Start accepts. Automaton has 49354 states and 223622 transitions. Word has length 25 [2021-04-15 05:40:21,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:21,975 INFO L480 AbstractCegarLoop]: Abstraction has 49354 states and 223622 transitions. [2021-04-15 05:40:21,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 49354 states and 223622 transitions. [2021-04-15 05:40:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:22,091 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:22,091 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:22,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-04-15 05:40:22,292 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:22,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1169845454, now seen corresponding path program 11 times [2021-04-15 05:40:22,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:22,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591932289] [2021-04-15 05:40:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:22,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591932289] [2021-04-15 05:40:22,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095635631] [2021-04-15 05:40:22,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:22,716 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:40:22,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:22,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:40:22,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:22,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:22,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-04-15 05:40:22,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351256472] [2021-04-15 05:40:22,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-15 05:40:22,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:22,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-15 05:40:22,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-04-15 05:40:22,864 INFO L87 Difference]: Start difference. First operand 49354 states and 223622 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:23,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:23,484 INFO L93 Difference]: Finished difference Result 62376 states and 281005 transitions. [2021-04-15 05:40:23,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 05:40:23,485 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:23,724 INFO L225 Difference]: With dead ends: 62376 [2021-04-15 05:40:23,724 INFO L226 Difference]: Without dead ends: 62248 [2021-04-15 05:40:23,725 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 477.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-04-15 05:40:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62248 states. [2021-04-15 05:40:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62248 to 49730. [2021-04-15 05:40:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49730 states, 49729 states have (on average 4.530977900219188) internal successors, (225321), 49729 states have internal predecessors, (225321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:25,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49730 states to 49730 states and 225321 transitions. [2021-04-15 05:40:25,363 INFO L78 Accepts]: Start accepts. Automaton has 49730 states and 225321 transitions. Word has length 25 [2021-04-15 05:40:25,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:25,363 INFO L480 AbstractCegarLoop]: Abstraction has 49730 states and 225321 transitions. [2021-04-15 05:40:25,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 49730 states and 225321 transitions. [2021-04-15 05:40:25,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:25,477 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:25,477 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:25,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:25,678 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:25,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:25,678 INFO L82 PathProgramCache]: Analyzing trace with hash 919442638, now seen corresponding path program 8 times [2021-04-15 05:40:25,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:25,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770145480] [2021-04-15 05:40:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:25,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770145480] [2021-04-15 05:40:25,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952765971] [2021-04-15 05:40:25,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:40:25,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:40:25,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:25,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:40:25,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:25,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:25,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-04-15 05:40:25,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151664934] [2021-04-15 05:40:25,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 05:40:25,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:25,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 05:40:25,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:40:25,826 INFO L87 Difference]: Start difference. First operand 49730 states and 225321 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:26,622 INFO L93 Difference]: Finished difference Result 55842 states and 250391 transitions. [2021-04-15 05:40:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 05:40:26,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:26,813 INFO L225 Difference]: With dead ends: 55842 [2021-04-15 05:40:26,813 INFO L226 Difference]: Without dead ends: 55751 [2021-04-15 05:40:26,813 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:40:26,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55751 states. [2021-04-15 05:40:28,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55751 to 51654. [2021-04-15 05:40:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51654 states, 51653 states have (on average 4.536793603469305) internal successors, (234339), 51653 states have internal predecessors, (234339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51654 states to 51654 states and 234339 transitions. [2021-04-15 05:40:28,426 INFO L78 Accepts]: Start accepts. Automaton has 51654 states and 234339 transitions. Word has length 25 [2021-04-15 05:40:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:28,426 INFO L480 AbstractCegarLoop]: Abstraction has 51654 states and 234339 transitions. [2021-04-15 05:40:28,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 51654 states and 234339 transitions. [2021-04-15 05:40:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:28,547 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:28,547 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:28,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:28,747 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:28,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:28,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1371587662, now seen corresponding path program 4 times [2021-04-15 05:40:28,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:28,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14926470] [2021-04-15 05:40:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:28,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14926470] [2021-04-15 05:40:28,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851177766] [2021-04-15 05:40:28,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:28,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:40:28,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:28,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:40:28,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:28,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:28,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-04-15 05:40:28,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122427831] [2021-04-15 05:40:28,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 05:40:28,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:28,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 05:40:28,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:40:28,894 INFO L87 Difference]: Start difference. First operand 51654 states and 234339 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:29,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:29,365 INFO L93 Difference]: Finished difference Result 59499 states and 265112 transitions. [2021-04-15 05:40:29,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 05:40:29,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:30,139 INFO L225 Difference]: With dead ends: 59499 [2021-04-15 05:40:30,139 INFO L226 Difference]: Without dead ends: 59499 [2021-04-15 05:40:30,148 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 69.2ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:40:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59499 states. [2021-04-15 05:40:31,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59499 to 51650. [2021-04-15 05:40:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51650 states, 51649 states have (on average 4.532401401769637) internal successors, (234094), 51649 states have internal predecessors, (234094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:31,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51650 states to 51650 states and 234094 transitions. [2021-04-15 05:40:31,831 INFO L78 Accepts]: Start accepts. Automaton has 51650 states and 234094 transitions. Word has length 25 [2021-04-15 05:40:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:31,831 INFO L480 AbstractCegarLoop]: Abstraction has 51650 states and 234094 transitions. [2021-04-15 05:40:31,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 51650 states and 234094 transitions. [2021-04-15 05:40:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:31,951 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:31,951 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:32,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:32,151 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:32,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:32,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1828705168, now seen corresponding path program 5 times [2021-04-15 05:40:32,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:32,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403464685] [2021-04-15 05:40:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:32,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403464685] [2021-04-15 05:40:32,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929365481] [2021-04-15 05:40:32,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:32,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:40:32,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:32,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:40:32,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:32,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:32,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-04-15 05:40:32,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688543701] [2021-04-15 05:40:32,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 05:40:32,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:32,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 05:40:32,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:40:32,292 INFO L87 Difference]: Start difference. First operand 51650 states and 234094 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:32,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:32,894 INFO L93 Difference]: Finished difference Result 56113 states and 251795 transitions. [2021-04-15 05:40:32,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 05:40:32,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:32,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:33,118 INFO L225 Difference]: With dead ends: 56113 [2021-04-15 05:40:33,118 INFO L226 Difference]: Without dead ends: 56095 [2021-04-15 05:40:33,118 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:40:33,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56095 states. [2021-04-15 05:40:34,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56095 to 51686. [2021-04-15 05:40:34,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51686 states, 51685 states have (on average 4.531721002225017) internal successors, (234222), 51685 states have internal predecessors, (234222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51686 states to 51686 states and 234222 transitions. [2021-04-15 05:40:34,756 INFO L78 Accepts]: Start accepts. Automaton has 51686 states and 234222 transitions. Word has length 25 [2021-04-15 05:40:34,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:34,756 INFO L480 AbstractCegarLoop]: Abstraction has 51686 states and 234222 transitions. [2021-04-15 05:40:34,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 51686 states and 234222 transitions. [2021-04-15 05:40:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:34,883 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:34,883 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:35,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:35,084 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1290086910, now seen corresponding path program 6 times [2021-04-15 05:40:35,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:35,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093069295] [2021-04-15 05:40:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:35,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093069295] [2021-04-15 05:40:35,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508418846] [2021-04-15 05:40:35,131 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:40:35,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 05:40:35,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:35,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-15 05:40:35,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:35,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:35,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:40:35,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292088283] [2021-04-15 05:40:35,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:40:35,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:35,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:40:35,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:40:35,213 INFO L87 Difference]: Start difference. First operand 51686 states and 234222 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:36,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:36,276 INFO L93 Difference]: Finished difference Result 58399 states and 261556 transitions. [2021-04-15 05:40:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 05:40:36,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:36,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:36,526 INFO L225 Difference]: With dead ends: 58399 [2021-04-15 05:40:36,527 INFO L226 Difference]: Without dead ends: 58399 [2021-04-15 05:40:36,527 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:40:36,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58399 states. [2021-04-15 05:40:37,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58399 to 51724. [2021-04-15 05:40:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51724 states, 51723 states have (on average 4.5306536743808365) internal successors, (234339), 51723 states have internal predecessors, (234339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51724 states to 51724 states and 234339 transitions. [2021-04-15 05:40:38,269 INFO L78 Accepts]: Start accepts. Automaton has 51724 states and 234339 transitions. Word has length 25 [2021-04-15 05:40:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:38,269 INFO L480 AbstractCegarLoop]: Abstraction has 51724 states and 234339 transitions. [2021-04-15 05:40:38,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 51724 states and 234339 transitions. [2021-04-15 05:40:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:38,388 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:38,388 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:38,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-04-15 05:40:38,589 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:38,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2119082106, now seen corresponding path program 7 times [2021-04-15 05:40:38,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:38,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526166024] [2021-04-15 05:40:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:38,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526166024] [2021-04-15 05:40:38,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870815862] [2021-04-15 05:40:38,650 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:38,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:40:38,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:38,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:38,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-04-15 05:40:38,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762674543] [2021-04-15 05:40:38,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 05:40:38,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:38,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 05:40:38,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:40:38,761 INFO L87 Difference]: Start difference. First operand 51724 states and 234339 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:39,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:39,796 INFO L93 Difference]: Finished difference Result 51994 states and 235188 transitions. [2021-04-15 05:40:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:40:39,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:39,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:40,002 INFO L225 Difference]: With dead ends: 51994 [2021-04-15 05:40:40,002 INFO L226 Difference]: Without dead ends: 51894 [2021-04-15 05:40:40,002 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:40:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51894 states. [2021-04-15 05:40:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51894 to 51730. [2021-04-15 05:40:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51730 states, 51729 states have (on average 4.530263488565408) internal successors, (234346), 51729 states have internal predecessors, (234346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51730 states to 51730 states and 234346 transitions. [2021-04-15 05:40:41,590 INFO L78 Accepts]: Start accepts. Automaton has 51730 states and 234346 transitions. Word has length 25 [2021-04-15 05:40:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:41,591 INFO L480 AbstractCegarLoop]: Abstraction has 51730 states and 234346 transitions. [2021-04-15 05:40:41,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 51730 states and 234346 transitions. [2021-04-15 05:40:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:41,704 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:41,704 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:41,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-04-15 05:40:41,905 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:41,905 INFO L82 PathProgramCache]: Analyzing trace with hash -656052858, now seen corresponding path program 8 times [2021-04-15 05:40:41,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:41,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862190723] [2021-04-15 05:40:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:41,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862190723] [2021-04-15 05:40:41,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879069928] [2021-04-15 05:40:41,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:40:42,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:40:42,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:42,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-15 05:40:42,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:42,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:42,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-04-15 05:40:42,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051903918] [2021-04-15 05:40:42,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 05:40:42,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:42,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 05:40:42,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:40:42,083 INFO L87 Difference]: Start difference. First operand 51730 states and 234346 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:42,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:42,908 INFO L93 Difference]: Finished difference Result 100286 states and 445039 transitions. [2021-04-15 05:40:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 05:40:42,909 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:42,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:43,831 INFO L225 Difference]: With dead ends: 100286 [2021-04-15 05:40:43,832 INFO L226 Difference]: Without dead ends: 100286 [2021-04-15 05:40:43,832 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2021-04-15 05:40:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100286 states. [2021-04-15 05:40:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100286 to 64386. [2021-04-15 05:40:46,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64386 states, 64385 states have (on average 4.569511532189175) internal successors, (294208), 64385 states have internal predecessors, (294208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64386 states to 64386 states and 294208 transitions. [2021-04-15 05:40:46,368 INFO L78 Accepts]: Start accepts. Automaton has 64386 states and 294208 transitions. Word has length 25 [2021-04-15 05:40:46,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:46,369 INFO L480 AbstractCegarLoop]: Abstraction has 64386 states and 294208 transitions. [2021-04-15 05:40:46,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 64386 states and 294208 transitions. [2021-04-15 05:40:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:46,527 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:46,527 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:46,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-04-15 05:40:46,728 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:46,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1715216728, now seen corresponding path program 9 times [2021-04-15 05:40:46,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:46,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525716271] [2021-04-15 05:40:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:46,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525716271] [2021-04-15 05:40:46,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411344510] [2021-04-15 05:40:46,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:46,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 05:40:46,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:46,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-15 05:40:46,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:46,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:46,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-04-15 05:40:46,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423234020] [2021-04-15 05:40:46,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 05:40:46,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:46,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 05:40:46,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:40:46,858 INFO L87 Difference]: Start difference. First operand 64386 states and 294208 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:48,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:48,161 INFO L93 Difference]: Finished difference Result 81238 states and 361064 transitions. [2021-04-15 05:40:48,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-15 05:40:48,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:48,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:48,490 INFO L225 Difference]: With dead ends: 81238 [2021-04-15 05:40:48,490 INFO L226 Difference]: Without dead ends: 81238 [2021-04-15 05:40:48,491 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-04-15 05:40:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81238 states. [2021-04-15 05:40:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81238 to 65346. [2021-04-15 05:40:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65346 states, 65345 states have (on average 4.563042313872523) internal successors, (298172), 65345 states have internal predecessors, (298172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65346 states to 65346 states and 298172 transitions. [2021-04-15 05:40:51,358 INFO L78 Accepts]: Start accepts. Automaton has 65346 states and 298172 transitions. Word has length 25 [2021-04-15 05:40:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:51,359 INFO L480 AbstractCegarLoop]: Abstraction has 65346 states and 298172 transitions. [2021-04-15 05:40:51,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 65346 states and 298172 transitions. [2021-04-15 05:40:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:51,592 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:51,592 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:51,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:51,797 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:51,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1504675330, now seen corresponding path program 10 times [2021-04-15 05:40:51,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:51,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701605288] [2021-04-15 05:40:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:51,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701605288] [2021-04-15 05:40:51,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189763007] [2021-04-15 05:40:51,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:51,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:40:51,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:51,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:40:51,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:52,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:52,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-04-15 05:40:52,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933110664] [2021-04-15 05:40:52,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 05:40:52,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:52,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 05:40:52,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:40:52,022 INFO L87 Difference]: Start difference. First operand 65346 states and 298172 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:52,717 INFO L93 Difference]: Finished difference Result 78221 states and 353751 transitions. [2021-04-15 05:40:52,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 05:40:52,718 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:53,065 INFO L225 Difference]: With dead ends: 78221 [2021-04-15 05:40:53,065 INFO L226 Difference]: Without dead ends: 78075 [2021-04-15 05:40:53,065 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 116.0ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-04-15 05:40:53,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78075 states. [2021-04-15 05:40:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78075 to 65316. [2021-04-15 05:40:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65316 states, 65315 states have (on average 4.563530582561433) internal successors, (298067), 65315 states have internal predecessors, (298067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65316 states to 65316 states and 298067 transitions. [2021-04-15 05:40:55,950 INFO L78 Accepts]: Start accepts. Automaton has 65316 states and 298067 transitions. Word has length 25 [2021-04-15 05:40:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:40:55,950 INFO L480 AbstractCegarLoop]: Abstraction has 65316 states and 298067 transitions. [2021-04-15 05:40:55,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:55,950 INFO L276 IsEmpty]: Start isEmpty. Operand 65316 states and 298067 transitions. [2021-04-15 05:40:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:40:56,128 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:40:56,128 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:40:56,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-04-15 05:40:56,330 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:40:56,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:40:56,330 INFO L82 PathProgramCache]: Analyzing trace with hash -423308966, now seen corresponding path program 11 times [2021-04-15 05:40:56,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:40:56,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478951157] [2021-04-15 05:40:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:40:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:40:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:56,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478951157] [2021-04-15 05:40:56,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287900917] [2021-04-15 05:40:56,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:40:56,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:40:56,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:40:56,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-15 05:40:56,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:40:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:40:56,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:40:56,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-04-15 05:40:56,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456794637] [2021-04-15 05:40:56,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:40:56,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:40:56,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:40:56,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:40:56,531 INFO L87 Difference]: Start difference. First operand 65316 states and 298067 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:40:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:40:58,082 INFO L93 Difference]: Finished difference Result 104463 states and 464626 transitions. [2021-04-15 05:40:58,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 05:40:58,082 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:40:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:40:58,607 INFO L225 Difference]: With dead ends: 104463 [2021-04-15 05:40:58,607 INFO L226 Difference]: Without dead ends: 104445 [2021-04-15 05:40:58,607 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 204.2ms TimeCoverageRelationStatistics Valid=157, Invalid=263, Unknown=0, NotChecked=0, Total=420 [2021-04-15 05:40:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104445 states. [2021-04-15 05:41:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104445 to 67860. [2021-04-15 05:41:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67860 states, 67859 states have (on average 4.565348737824017) internal successors, (309800), 67859 states have internal predecessors, (309800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67860 states to 67860 states and 309800 transitions. [2021-04-15 05:41:01,186 INFO L78 Accepts]: Start accepts. Automaton has 67860 states and 309800 transitions. Word has length 25 [2021-04-15 05:41:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:01,186 INFO L480 AbstractCegarLoop]: Abstraction has 67860 states and 309800 transitions. [2021-04-15 05:41:01,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:01,186 INFO L276 IsEmpty]: Start isEmpty. Operand 67860 states and 309800 transitions. [2021-04-15 05:41:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:01,375 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:01,375 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:01,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-04-15 05:41:01,577 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:01,577 INFO L82 PathProgramCache]: Analyzing trace with hash -206280976, now seen corresponding path program 12 times [2021-04-15 05:41:01,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:01,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029148036] [2021-04-15 05:41:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:01,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029148036] [2021-04-15 05:41:01,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970103598] [2021-04-15 05:41:01,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:01,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-04-15 05:41:01,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:41:01,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-15 05:41:01,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:02,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:02,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-04-15 05:41:02,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125327529] [2021-04-15 05:41:02,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 05:41:02,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:02,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 05:41:02,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:41:02,534 INFO L87 Difference]: Start difference. First operand 67860 states and 309800 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:03,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:03,644 INFO L93 Difference]: Finished difference Result 90415 states and 405203 transitions. [2021-04-15 05:41:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 05:41:03,644 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:03,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:04,085 INFO L225 Difference]: With dead ends: 90415 [2021-04-15 05:41:04,085 INFO L226 Difference]: Without dead ends: 90415 [2021-04-15 05:41:04,085 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 906.9ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-04-15 05:41:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90415 states. [2021-04-15 05:41:06,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90415 to 68043. [2021-04-15 05:41:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68043 states, 68042 states have (on average 4.564915787307839) internal successors, (310606), 68042 states have internal predecessors, (310606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68043 states to 68043 states and 310606 transitions. [2021-04-15 05:41:06,872 INFO L78 Accepts]: Start accepts. Automaton has 68043 states and 310606 transitions. Word has length 25 [2021-04-15 05:41:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:06,872 INFO L480 AbstractCegarLoop]: Abstraction has 68043 states and 310606 transitions. [2021-04-15 05:41:06,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 68043 states and 310606 transitions. [2021-04-15 05:41:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:07,051 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:07,051 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:07,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:07,252 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:07,252 INFO L82 PathProgramCache]: Analyzing trace with hash 64907726, now seen corresponding path program 13 times [2021-04-15 05:41:07,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:07,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733751931] [2021-04-15 05:41:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:07,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733751931] [2021-04-15 05:41:07,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051621484] [2021-04-15 05:41:07,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:07,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-15 05:41:07,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:07,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:07,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-04-15 05:41:07,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793233219] [2021-04-15 05:41:07,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 05:41:07,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:07,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 05:41:07,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:41:07,409 INFO L87 Difference]: Start difference. First operand 68043 states and 310606 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:08,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:08,905 INFO L93 Difference]: Finished difference Result 123026 states and 549593 transitions. [2021-04-15 05:41:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 05:41:08,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:08,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:09,488 INFO L225 Difference]: With dead ends: 123026 [2021-04-15 05:41:09,488 INFO L226 Difference]: Without dead ends: 123026 [2021-04-15 05:41:09,488 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2021-04-15 05:41:09,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123026 states. [2021-04-15 05:41:12,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123026 to 79556. [2021-04-15 05:41:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79556 states, 79555 states have (on average 4.561121236880146) internal successors, (362860), 79555 states have internal predecessors, (362860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79556 states to 79556 states and 362860 transitions. [2021-04-15 05:41:12,728 INFO L78 Accepts]: Start accepts. Automaton has 79556 states and 362860 transitions. Word has length 25 [2021-04-15 05:41:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:12,728 INFO L480 AbstractCegarLoop]: Abstraction has 79556 states and 362860 transitions. [2021-04-15 05:41:12,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 79556 states and 362860 transitions. [2021-04-15 05:41:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:12,935 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:12,935 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:13,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-04-15 05:41:13,136 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:13,136 INFO L82 PathProgramCache]: Analyzing trace with hash 115677808, now seen corresponding path program 14 times [2021-04-15 05:41:13,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:13,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175718716] [2021-04-15 05:41:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:13,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175718716] [2021-04-15 05:41:13,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971280922] [2021-04-15 05:41:13,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:13,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:41:13,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:41:13,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-15 05:41:13,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:13,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:13,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-04-15 05:41:13,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436752638] [2021-04-15 05:41:13,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 05:41:13,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:13,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 05:41:13,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:41:13,294 INFO L87 Difference]: Start difference. First operand 79556 states and 362860 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:14,869 INFO L93 Difference]: Finished difference Result 96478 states and 429704 transitions. [2021-04-15 05:41:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 05:41:14,869 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:15,359 INFO L225 Difference]: With dead ends: 96478 [2021-04-15 05:41:15,359 INFO L226 Difference]: Without dead ends: 96478 [2021-04-15 05:41:15,359 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 131.6ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-04-15 05:41:15,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96478 states. [2021-04-15 05:41:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96478 to 80282. [2021-04-15 05:41:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80282 states, 80281 states have (on average 4.555660741644972) internal successors, (365733), 80281 states have internal predecessors, (365733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80282 states to 80282 states and 365733 transitions. [2021-04-15 05:41:18,654 INFO L78 Accepts]: Start accepts. Automaton has 80282 states and 365733 transitions. Word has length 25 [2021-04-15 05:41:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:18,654 INFO L480 AbstractCegarLoop]: Abstraction has 80282 states and 365733 transitions. [2021-04-15 05:41:18,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 80282 states and 365733 transitions. [2021-04-15 05:41:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:18,848 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:18,848 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:19,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:19,053 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:19,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1557868062, now seen corresponding path program 15 times [2021-04-15 05:41:19,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:19,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172215427] [2021-04-15 05:41:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:19,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172215427] [2021-04-15 05:41:19,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138306653] [2021-04-15 05:41:19,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:19,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-04-15 05:41:19,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:41:19,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:41:19,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:19,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:19,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-04-15 05:41:19,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961671123] [2021-04-15 05:41:19,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:41:19,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:19,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:41:19,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:41:19,253 INFO L87 Difference]: Start difference. First operand 80282 states and 365733 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:20,613 INFO L93 Difference]: Finished difference Result 99599 states and 449196 transitions. [2021-04-15 05:41:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-15 05:41:20,629 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:20,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:21,122 INFO L225 Difference]: With dead ends: 99599 [2021-04-15 05:41:21,122 INFO L226 Difference]: Without dead ends: 99435 [2021-04-15 05:41:21,122 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 05:41:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99435 states. [2021-04-15 05:41:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99435 to 80309. [2021-04-15 05:41:23,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80309 states, 80308 states have (on average 4.5554863774468295) internal successors, (365842), 80308 states have internal predecessors, (365842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80309 states to 80309 states and 365842 transitions. [2021-04-15 05:41:23,761 INFO L78 Accepts]: Start accepts. Automaton has 80309 states and 365842 transitions. Word has length 25 [2021-04-15 05:41:23,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:23,761 INFO L480 AbstractCegarLoop]: Abstraction has 80309 states and 365842 transitions. [2021-04-15 05:41:23,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:23,761 INFO L276 IsEmpty]: Start isEmpty. Operand 80309 states and 365842 transitions. [2021-04-15 05:41:24,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:24,691 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:24,691 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:24,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-04-15 05:41:24,893 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:24,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:24,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1245125948, now seen corresponding path program 16 times [2021-04-15 05:41:24,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:24,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461892131] [2021-04-15 05:41:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:24,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461892131] [2021-04-15 05:41:24,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391642491] [2021-04-15 05:41:24,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:24,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:41:24,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:41:24,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:41:24,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:25,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:25,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-04-15 05:41:25,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909646470] [2021-04-15 05:41:25,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 05:41:25,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:25,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 05:41:25,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:41:25,047 INFO L87 Difference]: Start difference. First operand 80309 states and 365842 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:25,740 INFO L93 Difference]: Finished difference Result 80977 states and 368139 transitions. [2021-04-15 05:41:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:41:25,741 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:26,057 INFO L225 Difference]: With dead ends: 80977 [2021-04-15 05:41:26,057 INFO L226 Difference]: Without dead ends: 80877 [2021-04-15 05:41:26,057 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 82.9ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:41:26,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80877 states. [2021-04-15 05:41:28,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80877 to 80309. [2021-04-15 05:41:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80309 states, 80308 states have (on average 4.555150171838422) internal successors, (365815), 80308 states have internal predecessors, (365815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80309 states to 80309 states and 365815 transitions. [2021-04-15 05:41:29,279 INFO L78 Accepts]: Start accepts. Automaton has 80309 states and 365815 transitions. Word has length 25 [2021-04-15 05:41:29,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:29,280 INFO L480 AbstractCegarLoop]: Abstraction has 80309 states and 365815 transitions. [2021-04-15 05:41:29,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand 80309 states and 365815 transitions. [2021-04-15 05:41:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:29,507 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:29,507 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:29,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:29,708 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:29,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1318763598, now seen corresponding path program 7 times [2021-04-15 05:41:29,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:29,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083821804] [2021-04-15 05:41:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:29,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083821804] [2021-04-15 05:41:29,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894357486] [2021-04-15 05:41:29,735 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:29,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2021-04-15 05:41:29,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:29,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-04-15 05:41:29,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-04-15 05:41:29,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680030560] [2021-04-15 05:41:29,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 05:41:29,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 05:41:29,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:41:29,826 INFO L87 Difference]: Start difference. First operand 80309 states and 365815 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:31,104 INFO L93 Difference]: Finished difference Result 85544 states and 384196 transitions. [2021-04-15 05:41:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:41:31,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:31,508 INFO L225 Difference]: With dead ends: 85544 [2021-04-15 05:41:31,508 INFO L226 Difference]: Without dead ends: 83501 [2021-04-15 05:41:31,508 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:41:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83501 states. [2021-04-15 05:41:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83501 to 70435. [2021-04-15 05:41:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70435 states, 70434 states have (on average 4.576113808671948) internal successors, (322314), 70434 states have internal predecessors, (322314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70435 states to 70435 states and 322314 transitions. [2021-04-15 05:41:33,915 INFO L78 Accepts]: Start accepts. Automaton has 70435 states and 322314 transitions. Word has length 25 [2021-04-15 05:41:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:33,915 INFO L480 AbstractCegarLoop]: Abstraction has 70435 states and 322314 transitions. [2021-04-15 05:41:33,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 70435 states and 322314 transitions. [2021-04-15 05:41:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:34,103 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:34,103 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:34,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:34,303 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:34,304 INFO L82 PathProgramCache]: Analyzing trace with hash 984830642, now seen corresponding path program 8 times [2021-04-15 05:41:34,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:34,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665631906] [2021-04-15 05:41:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:34,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665631906] [2021-04-15 05:41:34,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:41:34,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 05:41:34,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783097898] [2021-04-15 05:41:34,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-15 05:41:34,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:34,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-15 05:41:34,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 05:41:34,326 INFO L87 Difference]: Start difference. First operand 70435 states and 322314 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:35,507 INFO L93 Difference]: Finished difference Result 75367 states and 338202 transitions. [2021-04-15 05:41:35,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 05:41:35,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:35,820 INFO L225 Difference]: With dead ends: 75367 [2021-04-15 05:41:35,820 INFO L226 Difference]: Without dead ends: 71043 [2021-04-15 05:41:35,820 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 05:41:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71043 states. [2021-04-15 05:41:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71043 to 53284. [2021-04-15 05:41:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53284 states, 53283 states have (on average 4.5673479346132915) internal successors, (243362), 53283 states have internal predecessors, (243362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53284 states to 53284 states and 243362 transitions. [2021-04-15 05:41:37,862 INFO L78 Accepts]: Start accepts. Automaton has 53284 states and 243362 transitions. Word has length 25 [2021-04-15 05:41:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:37,862 INFO L480 AbstractCegarLoop]: Abstraction has 53284 states and 243362 transitions. [2021-04-15 05:41:37,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 53284 states and 243362 transitions. [2021-04-15 05:41:38,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:38,007 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:38,007 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:38,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-04-15 05:41:38,007 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:38,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:38,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1193216718, now seen corresponding path program 9 times [2021-04-15 05:41:38,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:38,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001639239] [2021-04-15 05:41:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:38,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001639239] [2021-04-15 05:41:38,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213110973] [2021-04-15 05:41:38,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:38,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 05:41:38,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:41:38,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:41:38,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:38,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:38,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:41:38,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7128919] [2021-04-15 05:41:38,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:41:38,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:38,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:41:38,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:41:38,156 INFO L87 Difference]: Start difference. First operand 53284 states and 243362 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:38,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:38,679 INFO L93 Difference]: Finished difference Result 55218 states and 250832 transitions. [2021-04-15 05:41:38,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:41:38,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:38,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:38,927 INFO L225 Difference]: With dead ends: 55218 [2021-04-15 05:41:38,928 INFO L226 Difference]: Without dead ends: 55082 [2021-04-15 05:41:38,928 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:41:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55082 states. [2021-04-15 05:41:40,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55082 to 53287. [2021-04-15 05:41:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53287 states, 53286 states have (on average 4.568685958788425) internal successors, (243447), 53286 states have internal predecessors, (243447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53287 states to 53287 states and 243447 transitions. [2021-04-15 05:41:41,302 INFO L78 Accepts]: Start accepts. Automaton has 53287 states and 243447 transitions. Word has length 25 [2021-04-15 05:41:41,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:41,302 INFO L480 AbstractCegarLoop]: Abstraction has 53287 states and 243447 transitions. [2021-04-15 05:41:41,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:41,303 INFO L276 IsEmpty]: Start isEmpty. Operand 53287 states and 243447 transitions. [2021-04-15 05:41:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:41,460 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:41,460 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:41,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:41,660 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:41,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:41,661 INFO L82 PathProgramCache]: Analyzing trace with hash -648382774, now seen corresponding path program 10 times [2021-04-15 05:41:41,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:41,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997944616] [2021-04-15 05:41:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:41,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997944616] [2021-04-15 05:41:41,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252306977] [2021-04-15 05:41:41,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:41:41,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:41:41,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:41:41,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:41:41,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:41,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:41,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:41:41,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591013141] [2021-04-15 05:41:41,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:41:41,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:41,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:41:41,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:41:41,819 INFO L87 Difference]: Start difference. First operand 53287 states and 243447 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:42,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:42,338 INFO L93 Difference]: Finished difference Result 55660 states and 252783 transitions. [2021-04-15 05:41:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:41:42,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:42,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:42,596 INFO L225 Difference]: With dead ends: 55660 [2021-04-15 05:41:42,596 INFO L226 Difference]: Without dead ends: 55524 [2021-04-15 05:41:42,596 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:41:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55524 states. [2021-04-15 05:41:44,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55524 to 53321. [2021-04-15 05:41:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53321 states, 53320 states have (on average 4.569617404351088) internal successors, (243652), 53320 states have internal predecessors, (243652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53321 states to 53321 states and 243652 transitions. [2021-04-15 05:41:44,585 INFO L78 Accepts]: Start accepts. Automaton has 53321 states and 243652 transitions. Word has length 25 [2021-04-15 05:41:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:44,585 INFO L480 AbstractCegarLoop]: Abstraction has 53321 states and 243652 transitions. [2021-04-15 05:41:44,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 53321 states and 243652 transitions. [2021-04-15 05:41:44,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:44,740 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:44,740 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:44,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:44,940 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:44,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:44,941 INFO L82 PathProgramCache]: Analyzing trace with hash -961842550, now seen corresponding path program 11 times [2021-04-15 05:41:44,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:44,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020805785] [2021-04-15 05:41:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:45,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020805785] [2021-04-15 05:41:45,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543675678] [2021-04-15 05:41:45,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:41:45,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 05:41:45,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:41:45,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:41:45,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:45,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:45,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:41:45,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274355426] [2021-04-15 05:41:45,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:41:45,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:45,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:41:45,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:41:45,114 INFO L87 Difference]: Start difference. First operand 53321 states and 243652 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:46,331 INFO L93 Difference]: Finished difference Result 54944 states and 250090 transitions. [2021-04-15 05:41:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:41:46,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:46,582 INFO L225 Difference]: With dead ends: 54944 [2021-04-15 05:41:46,582 INFO L226 Difference]: Without dead ends: 54828 [2021-04-15 05:41:46,582 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:41:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54828 states. [2021-04-15 05:41:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54828 to 53357. [2021-04-15 05:41:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53357 states, 53356 states have (on average 4.570320113951571) internal successors, (243854), 53356 states have internal predecessors, (243854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53357 states to 53357 states and 243854 transitions. [2021-04-15 05:41:48,385 INFO L78 Accepts]: Start accepts. Automaton has 53357 states and 243854 transitions. Word has length 25 [2021-04-15 05:41:48,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:48,385 INFO L480 AbstractCegarLoop]: Abstraction has 53357 states and 243854 transitions. [2021-04-15 05:41:48,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 53357 states and 243854 transitions. [2021-04-15 05:41:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:48,518 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:48,518 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:48,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-04-15 05:41:48,719 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:48,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:48,719 INFO L82 PathProgramCache]: Analyzing trace with hash 394898822, now seen corresponding path program 12 times [2021-04-15 05:41:48,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:48,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837394035] [2021-04-15 05:41:48,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:48,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837394035] [2021-04-15 05:41:48,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841989268] [2021-04-15 05:41:48,790 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:48,817 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-04-15 05:41:48,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:41:48,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:41:48,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:48,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:48,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:41:48,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680247243] [2021-04-15 05:41:48,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:41:48,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:48,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:41:48,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:41:48,862 INFO L87 Difference]: Start difference. First operand 53357 states and 243854 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:49,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:49,283 INFO L93 Difference]: Finished difference Result 54517 states and 248384 transitions. [2021-04-15 05:41:49,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:41:49,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:49,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:49,471 INFO L225 Difference]: With dead ends: 54517 [2021-04-15 05:41:49,471 INFO L226 Difference]: Without dead ends: 54421 [2021-04-15 05:41:49,471 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:41:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54421 states. [2021-04-15 05:41:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54421 to 53379. [2021-04-15 05:41:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53379 states, 53378 states have (on average 4.570815691858069) internal successors, (243981), 53378 states have internal predecessors, (243981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:51,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53379 states to 53379 states and 243981 transitions. [2021-04-15 05:41:51,216 INFO L78 Accepts]: Start accepts. Automaton has 53379 states and 243981 transitions. Word has length 25 [2021-04-15 05:41:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:51,216 INFO L480 AbstractCegarLoop]: Abstraction has 53379 states and 243981 transitions. [2021-04-15 05:41:51,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 53379 states and 243981 transitions. [2021-04-15 05:41:51,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:51,353 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:51,353 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forcibly destroying the process [2021-04-15 05:41:51,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:51,760 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:51,760 INFO L82 PathProgramCache]: Analyzing trace with hash 267220118, now seen corresponding path program 13 times [2021-04-15 05:41:51,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:51,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346931613] [2021-04-15 05:41:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:51,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346931613] [2021-04-15 05:41:51,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365277399] [2021-04-15 05:41:51,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:51,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:41:51,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:41:51,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:51,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:41:51,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415556074] [2021-04-15 05:41:51,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:41:51,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:51,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:41:51,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:41:51,948 INFO L87 Difference]: Start difference. First operand 53379 states and 243981 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:52,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:52,411 INFO L93 Difference]: Finished difference Result 56039 states and 254275 transitions. [2021-04-15 05:41:52,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:41:52,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:52,627 INFO L225 Difference]: With dead ends: 56039 [2021-04-15 05:41:52,628 INFO L226 Difference]: Without dead ends: 55903 [2021-04-15 05:41:52,628 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:41:52,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55903 states. [2021-04-15 05:41:54,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55903 to 53420. [2021-04-15 05:41:54,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53420 states, 53419 states have (on average 4.571800295774912) internal successors, (244221), 53419 states have internal predecessors, (244221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53420 states to 53420 states and 244221 transitions. [2021-04-15 05:41:54,347 INFO L78 Accepts]: Start accepts. Automaton has 53420 states and 244221 transitions. Word has length 25 [2021-04-15 05:41:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:54,347 INFO L480 AbstractCegarLoop]: Abstraction has 53420 states and 244221 transitions. [2021-04-15 05:41:54,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 53420 states and 244221 transitions. [2021-04-15 05:41:54,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:54,483 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:54,483 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:54,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-04-15 05:41:54,683 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:54,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:54,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1366340886, now seen corresponding path program 12 times [2021-04-15 05:41:54,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:54,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453943327] [2021-04-15 05:41:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:54,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453943327] [2021-04-15 05:41:54,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631707590] [2021-04-15 05:41:54,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:54,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 05:41:54,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:41:54,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:41:54,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:54,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:54,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-04-15 05:41:54,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695895213] [2021-04-15 05:41:54,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:41:54,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:54,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:41:54,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:41:54,809 INFO L87 Difference]: Start difference. First operand 53420 states and 244221 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:41:55,942 INFO L93 Difference]: Finished difference Result 81130 states and 366034 transitions. [2021-04-15 05:41:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 05:41:55,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:41:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:41:56,337 INFO L225 Difference]: With dead ends: 81130 [2021-04-15 05:41:56,338 INFO L226 Difference]: Without dead ends: 80729 [2021-04-15 05:41:56,338 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2021-04-15 05:41:56,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80729 states. [2021-04-15 05:41:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80729 to 69515. [2021-04-15 05:41:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69515 states, 69514 states have (on average 4.596815030065886) internal successors, (319543), 69514 states have internal predecessors, (319543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69515 states to 69515 states and 319543 transitions. [2021-04-15 05:41:58,948 INFO L78 Accepts]: Start accepts. Automaton has 69515 states and 319543 transitions. Word has length 25 [2021-04-15 05:41:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:41:58,949 INFO L480 AbstractCegarLoop]: Abstraction has 69515 states and 319543 transitions. [2021-04-15 05:41:58,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:41:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 69515 states and 319543 transitions. [2021-04-15 05:41:59,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:41:59,624 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:41:59,624 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:41:59,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:59,841 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:41:59,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:41:59,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1436234450, now seen corresponding path program 13 times [2021-04-15 05:41:59,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:41:59,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877588431] [2021-04-15 05:41:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:41:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:59,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877588431] [2021-04-15 05:41:59,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470708851] [2021-04-15 05:41:59,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:41:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:41:59,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:41:59,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:41:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:41:59,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:41:59,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-04-15 05:41:59,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068098486] [2021-04-15 05:41:59,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:41:59,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:41:59,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:41:59,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:41:59,991 INFO L87 Difference]: Start difference. First operand 69515 states and 319543 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:00,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:00,983 INFO L93 Difference]: Finished difference Result 88632 states and 402862 transitions. [2021-04-15 05:42:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-15 05:42:00,984 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:00,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:42:01,363 INFO L225 Difference]: With dead ends: 88632 [2021-04-15 05:42:01,363 INFO L226 Difference]: Without dead ends: 88489 [2021-04-15 05:42:01,364 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 149.0ms TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-04-15 05:42:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88489 states. [2021-04-15 05:42:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88489 to 80313. [2021-04-15 05:42:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80313 states, 80312 states have (on average 4.627652156589302) internal successors, (371656), 80312 states have internal predecessors, (371656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80313 states to 80313 states and 371656 transitions. [2021-04-15 05:42:04,484 INFO L78 Accepts]: Start accepts. Automaton has 80313 states and 371656 transitions. Word has length 25 [2021-04-15 05:42:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:42:04,485 INFO L480 AbstractCegarLoop]: Abstraction has 80313 states and 371656 transitions. [2021-04-15 05:42:04,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 80313 states and 371656 transitions. [2021-04-15 05:42:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:42:04,709 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:42:04,709 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:42:04,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:04,913 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:42:04,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:42:04,913 INFO L82 PathProgramCache]: Analyzing trace with hash -46239658, now seen corresponding path program 14 times [2021-04-15 05:42:04,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:42:04,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218842400] [2021-04-15 05:42:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:42:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:42:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:04,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218842400] [2021-04-15 05:42:04,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157025261] [2021-04-15 05:42:04,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:05,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:42:05,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:42:05,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:42:05,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:42:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:05,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:42:05,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:42:05,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662608659] [2021-04-15 05:42:05,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:42:05,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:42:05,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:42:05,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:42:05,074 INFO L87 Difference]: Start difference. First operand 80313 states and 371656 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:06,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:06,257 INFO L93 Difference]: Finished difference Result 82125 states and 378603 transitions. [2021-04-15 05:42:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:42:06,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:06,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:42:06,646 INFO L225 Difference]: With dead ends: 82125 [2021-04-15 05:42:06,647 INFO L226 Difference]: Without dead ends: 82009 [2021-04-15 05:42:06,647 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:42:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82009 states. [2021-04-15 05:42:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82009 to 80343. [2021-04-15 05:42:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80343 states, 80342 states have (on average 4.6280525752408455) internal successors, (371827), 80342 states have internal predecessors, (371827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80343 states to 80343 states and 371827 transitions. [2021-04-15 05:42:09,381 INFO L78 Accepts]: Start accepts. Automaton has 80343 states and 371827 transitions. Word has length 25 [2021-04-15 05:42:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:42:09,381 INFO L480 AbstractCegarLoop]: Abstraction has 80343 states and 371827 transitions. [2021-04-15 05:42:09,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 80343 states and 371827 transitions. [2021-04-15 05:42:09,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:42:09,615 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:42:09,615 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:42:09,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:09,815 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:42:09,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:42:09,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1310501714, now seen corresponding path program 15 times [2021-04-15 05:42:09,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:42:09,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778789137] [2021-04-15 05:42:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:42:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:42:10,373 WARN L205 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-04-15 05:42:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:10,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778789137] [2021-04-15 05:42:10,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458211875] [2021-04-15 05:42:10,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:10,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 05:42:10,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:42:10,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:42:10,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:42:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:10,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:42:10,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:42:10,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785051438] [2021-04-15 05:42:10,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:42:10,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:42:10,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:42:10,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:42:10,572 INFO L87 Difference]: Start difference. First operand 80343 states and 371827 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:11,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:11,298 INFO L93 Difference]: Finished difference Result 82686 states and 381082 transitions. [2021-04-15 05:42:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:42:11,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:11,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:42:11,631 INFO L225 Difference]: With dead ends: 82686 [2021-04-15 05:42:11,631 INFO L226 Difference]: Without dead ends: 82590 [2021-04-15 05:42:11,632 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:42:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82590 states. [2021-04-15 05:42:13,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82590 to 80375. [2021-04-15 05:42:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80375 states, 80374 states have (on average 4.628549033269465) internal successors, (372015), 80374 states have internal predecessors, (372015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80375 states to 80375 states and 372015 transitions. [2021-04-15 05:42:15,197 INFO L78 Accepts]: Start accepts. Automaton has 80375 states and 372015 transitions. Word has length 25 [2021-04-15 05:42:15,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:42:15,197 INFO L480 AbstractCegarLoop]: Abstraction has 80375 states and 372015 transitions. [2021-04-15 05:42:15,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:15,197 INFO L276 IsEmpty]: Start isEmpty. Operand 80375 states and 372015 transitions. [2021-04-15 05:42:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:42:15,499 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:42:15,499 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:42:15,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:15,713 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:42:15,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:42:15,713 INFO L82 PathProgramCache]: Analyzing trace with hash -101580194, now seen corresponding path program 14 times [2021-04-15 05:42:15,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:42:15,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453922662] [2021-04-15 05:42:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:42:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:42:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:42:15,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453922662] [2021-04-15 05:42:15,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347534217] [2021-04-15 05:42:15,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:42:15,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:42:15,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:15,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:42:15,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:42:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:42:15,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:42:15,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-04-15 05:42:15,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251186662] [2021-04-15 05:42:15,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 05:42:15,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:42:15,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 05:42:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:42:15,982 INFO L87 Difference]: Start difference. First operand 80375 states and 372015 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:17,889 INFO L93 Difference]: Finished difference Result 97262 states and 447488 transitions. [2021-04-15 05:42:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 05:42:17,890 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:42:18,432 INFO L225 Difference]: With dead ends: 97262 [2021-04-15 05:42:18,432 INFO L226 Difference]: Without dead ends: 97262 [2021-04-15 05:42:18,432 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 106.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 05:42:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97262 states. [2021-04-15 05:42:20,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97262 to 86297. [2021-04-15 05:42:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86297 states, 86296 states have (on average 4.6381871697413555) internal successors, (400257), 86296 states have internal predecessors, (400257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86297 states to 86297 states and 400257 transitions. [2021-04-15 05:42:21,477 INFO L78 Accepts]: Start accepts. Automaton has 86297 states and 400257 transitions. Word has length 25 [2021-04-15 05:42:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:42:21,478 INFO L480 AbstractCegarLoop]: Abstraction has 86297 states and 400257 transitions. [2021-04-15 05:42:21,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 86297 states and 400257 transitions. [2021-04-15 05:42:22,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:42:22,427 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:42:22,427 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:42:22,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2021-04-15 05:42:22,628 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:42:22,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:42:22,629 INFO L82 PathProgramCache]: Analyzing trace with hash 517783156, now seen corresponding path program 9 times [2021-04-15 05:42:22,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:42:22,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129773886] [2021-04-15 05:42:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:42:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:42:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:22,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129773886] [2021-04-15 05:42:22,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949301365] [2021-04-15 05:42:22,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:22,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 05:42:22,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:42:22,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-04-15 05:42:22,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:42:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:22,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:42:22,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-04-15 05:42:22,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605637465] [2021-04-15 05:42:22,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 05:42:22,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:42:22,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 05:42:22,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:42:22,743 INFO L87 Difference]: Start difference. First operand 86297 states and 400257 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:23,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:23,655 INFO L93 Difference]: Finished difference Result 91494 states and 422890 transitions. [2021-04-15 05:42:23,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 05:42:23,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:42:24,089 INFO L225 Difference]: With dead ends: 91494 [2021-04-15 05:42:24,089 INFO L226 Difference]: Without dead ends: 91347 [2021-04-15 05:42:24,089 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:42:24,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91347 states. [2021-04-15 05:42:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91347 to 89813. [2021-04-15 05:42:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89813 states, 89812 states have (on average 4.6429207678261255) internal successors, (416990), 89812 states have internal predecessors, (416990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:27,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89813 states to 89813 states and 416990 transitions. [2021-04-15 05:42:27,863 INFO L78 Accepts]: Start accepts. Automaton has 89813 states and 416990 transitions. Word has length 25 [2021-04-15 05:42:27,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:42:27,863 INFO L480 AbstractCegarLoop]: Abstraction has 89813 states and 416990 transitions. [2021-04-15 05:42:27,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:27,863 INFO L276 IsEmpty]: Start isEmpty. Operand 89813 states and 416990 transitions. [2021-04-15 05:42:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:42:28,123 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:42:28,123 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:42:28,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:28,324 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:42:28,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:42:28,324 INFO L82 PathProgramCache]: Analyzing trace with hash -857833266, now seen corresponding path program 16 times [2021-04-15 05:42:28,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:42:28,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110569552] [2021-04-15 05:42:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:42:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:42:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:28,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110569552] [2021-04-15 05:42:28,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886827332] [2021-04-15 05:42:28,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:28,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:42:28,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:42:28,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:42:28,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:42:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:28,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:42:28,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:42:28,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092016978] [2021-04-15 05:42:28,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:42:28,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:42:28,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:42:28,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:42:28,505 INFO L87 Difference]: Start difference. First operand 89813 states and 416990 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:29,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:29,922 INFO L93 Difference]: Finished difference Result 91436 states and 423180 transitions. [2021-04-15 05:42:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:42:29,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:29,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:42:30,387 INFO L225 Difference]: With dead ends: 91436 [2021-04-15 05:42:30,387 INFO L226 Difference]: Without dead ends: 91320 [2021-04-15 05:42:30,387 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 76.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:42:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91320 states. [2021-04-15 05:42:32,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91320 to 89841. [2021-04-15 05:42:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89841 states, 89840 states have (on average 4.643165627782725) internal successors, (417142), 89840 states have internal predecessors, (417142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89841 states to 89841 states and 417142 transitions. [2021-04-15 05:42:33,801 INFO L78 Accepts]: Start accepts. Automaton has 89841 states and 417142 transitions. Word has length 25 [2021-04-15 05:42:33,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:42:33,801 INFO L480 AbstractCegarLoop]: Abstraction has 89841 states and 417142 transitions. [2021-04-15 05:42:33,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:33,802 INFO L276 IsEmpty]: Start isEmpty. Operand 89841 states and 417142 transitions. [2021-04-15 05:42:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:42:34,060 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:42:34,060 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:42:34,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:34,261 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:42:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:42:34,261 INFO L82 PathProgramCache]: Analyzing trace with hash 498908106, now seen corresponding path program 17 times [2021-04-15 05:42:34,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:42:34,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961065966] [2021-04-15 05:42:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:42:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:42:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:34,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961065966] [2021-04-15 05:42:34,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226147131] [2021-04-15 05:42:34,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:34,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 05:42:34,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:42:34,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:42:34,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:42:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:34,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:42:34,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:42:34,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613138190] [2021-04-15 05:42:34,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:42:34,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:42:34,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:42:34,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:42:34,441 INFO L87 Difference]: Start difference. First operand 89841 states and 417142 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:35,195 INFO L93 Difference]: Finished difference Result 92001 states and 425658 transitions. [2021-04-15 05:42:35,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:42:35,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:42:35,599 INFO L225 Difference]: With dead ends: 92001 [2021-04-15 05:42:35,599 INFO L226 Difference]: Without dead ends: 91905 [2021-04-15 05:42:35,600 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:42:36,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91905 states. [2021-04-15 05:42:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91905 to 89865. [2021-04-15 05:42:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89865 states, 89864 states have (on average 4.643572509570017) internal successors, (417290), 89864 states have internal predecessors, (417290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:39,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89865 states to 89865 states and 417290 transitions. [2021-04-15 05:42:39,167 INFO L78 Accepts]: Start accepts. Automaton has 89865 states and 417290 transitions. Word has length 25 [2021-04-15 05:42:39,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:42:39,167 INFO L480 AbstractCegarLoop]: Abstraction has 89865 states and 417290 transitions. [2021-04-15 05:42:39,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:39,168 INFO L276 IsEmpty]: Start isEmpty. Operand 89865 states and 417290 transitions. [2021-04-15 05:42:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:42:39,434 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:42:39,434 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:42:39,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-04-15 05:42:39,635 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:42:39,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:42:39,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1202930538, now seen corresponding path program 18 times [2021-04-15 05:42:39,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:42:39,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987211943] [2021-04-15 05:42:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:42:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:42:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:39,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987211943] [2021-04-15 05:42:39,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907443110] [2021-04-15 05:42:39,700 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:39,726 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 05:42:39,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:42:39,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:42:39,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:42:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:42:39,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:42:39,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:42:39,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407895031] [2021-04-15 05:42:39,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:42:39,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:42:39,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:42:39,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:42:39,776 INFO L87 Difference]: Start difference. First operand 89865 states and 417290 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:41,289 INFO L93 Difference]: Finished difference Result 92117 states and 425950 transitions. [2021-04-15 05:42:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:42:41,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:41,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:42:41,755 INFO L225 Difference]: With dead ends: 92117 [2021-04-15 05:42:41,755 INFO L226 Difference]: Without dead ends: 92021 [2021-04-15 05:42:41,755 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:42:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92021 states. [2021-04-15 05:42:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92021 to 89911. [2021-04-15 05:42:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89911 states, 89910 states have (on average 4.644099655210766) internal successors, (417551), 89910 states have internal predecessors, (417551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89911 states to 89911 states and 417551 transitions. [2021-04-15 05:42:45,651 INFO L78 Accepts]: Start accepts. Automaton has 89911 states and 417551 transitions. Word has length 25 [2021-04-15 05:42:45,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:42:45,651 INFO L480 AbstractCegarLoop]: Abstraction has 89911 states and 417551 transitions. [2021-04-15 05:42:45,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:45,651 INFO L276 IsEmpty]: Start isEmpty. Operand 89911 states and 417551 transitions. [2021-04-15 05:42:45,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:42:45,923 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:42:45,923 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:42:46,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:46,124 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:42:46,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:42:46,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1894658838, now seen corresponding path program 10 times [2021-04-15 05:42:46,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:42:46,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889675446] [2021-04-15 05:42:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:42:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:42:46,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:42:46,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889675446] [2021-04-15 05:42:46,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735399734] [2021-04-15 05:42:46,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:46,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:42:46,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:42:46,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:42:46,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:42:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:42:46,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:42:46,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2021-04-15 05:42:46,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677502607] [2021-04-15 05:42:46,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 05:42:46,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:42:46,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 05:42:46,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:42:46,254 INFO L87 Difference]: Start difference. First operand 89911 states and 417551 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:47,998 INFO L93 Difference]: Finished difference Result 103998 states and 474262 transitions. [2021-04-15 05:42:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-15 05:42:47,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:42:48,564 INFO L225 Difference]: With dead ends: 103998 [2021-04-15 05:42:48,564 INFO L226 Difference]: Without dead ends: 103896 [2021-04-15 05:42:48,564 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 168.1ms TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2021-04-15 05:42:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103896 states. [2021-04-15 05:42:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103896 to 89935. [2021-04-15 05:42:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89935 states, 89934 states have (on average 4.643205017012476) internal successors, (417582), 89934 states have internal predecessors, (417582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89935 states to 89935 states and 417582 transitions. [2021-04-15 05:42:52,155 INFO L78 Accepts]: Start accepts. Automaton has 89935 states and 417582 transitions. Word has length 25 [2021-04-15 05:42:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:42:52,155 INFO L480 AbstractCegarLoop]: Abstraction has 89935 states and 417582 transitions. [2021-04-15 05:42:52,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 89935 states and 417582 transitions. [2021-04-15 05:42:52,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:42:52,391 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:42:52,391 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:42:52,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-04-15 05:42:52,592 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:42:52,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:42:52,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1370737230, now seen corresponding path program 11 times [2021-04-15 05:42:52,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:42:52,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831131120] [2021-04-15 05:42:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:42:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:42:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:42:52,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831131120] [2021-04-15 05:42:52,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503125114] [2021-04-15 05:42:52,616 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:52,635 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:42:52,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:42:52,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:42:52,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:42:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:42:52,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:42:52,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-04-15 05:42:52,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956225414] [2021-04-15 05:42:52,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 05:42:52,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:42:52,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 05:42:52,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:42:52,710 INFO L87 Difference]: Start difference. First operand 89935 states and 417582 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:54,217 INFO L93 Difference]: Finished difference Result 106096 states and 486323 transitions. [2021-04-15 05:42:54,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-15 05:42:54,217 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:54,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:42:54,672 INFO L225 Difference]: With dead ends: 106096 [2021-04-15 05:42:54,673 INFO L226 Difference]: Without dead ends: 105946 [2021-04-15 05:42:54,673 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 73.3ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-04-15 05:42:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105946 states. [2021-04-15 05:42:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105946 to 98870. [2021-04-15 05:42:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98870 states, 98869 states have (on average 4.634475922685573) internal successors, (458206), 98869 states have internal predecessors, (458206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98870 states to 98870 states and 458206 transitions. [2021-04-15 05:42:58,340 INFO L78 Accepts]: Start accepts. Automaton has 98870 states and 458206 transitions. Word has length 25 [2021-04-15 05:42:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:42:58,340 INFO L480 AbstractCegarLoop]: Abstraction has 98870 states and 458206 transitions. [2021-04-15 05:42:58,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:58,340 INFO L276 IsEmpty]: Start isEmpty. Operand 98870 states and 458206 transitions. [2021-04-15 05:42:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:42:58,624 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:42:58,624 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:42:58,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-04-15 05:42:58,825 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:42:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:42:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1318988372, now seen corresponding path program 12 times [2021-04-15 05:42:58,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:42:58,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16184054] [2021-04-15 05:42:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:42:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:42:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:42:58,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16184054] [2021-04-15 05:42:58,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625336810] [2021-04-15 05:42:58,852 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:42:58,892 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 05:42:58,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:42:58,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:42:58,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:42:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:42:58,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:42:58,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-04-15 05:42:58,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737220201] [2021-04-15 05:42:58,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 05:42:58,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:42:58,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 05:42:58,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:42:58,952 INFO L87 Difference]: Start difference. First operand 98870 states and 458206 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:42:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:42:59,710 INFO L93 Difference]: Finished difference Result 103327 states and 476528 transitions. [2021-04-15 05:42:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:42:59,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:42:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:43:00,719 INFO L225 Difference]: With dead ends: 103327 [2021-04-15 05:43:00,719 INFO L226 Difference]: Without dead ends: 103283 [2021-04-15 05:43:00,719 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:43:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103283 states. [2021-04-15 05:43:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103283 to 99564. [2021-04-15 05:43:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99564 states, 99563 states have (on average 4.633588782981629) internal successors, (461334), 99563 states have internal predecessors, (461334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99564 states to 99564 states and 461334 transitions. [2021-04-15 05:43:03,499 INFO L78 Accepts]: Start accepts. Automaton has 99564 states and 461334 transitions. Word has length 25 [2021-04-15 05:43:03,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:43:03,499 INFO L480 AbstractCegarLoop]: Abstraction has 99564 states and 461334 transitions. [2021-04-15 05:43:03,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 99564 states and 461334 transitions. [2021-04-15 05:43:04,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:43:04,433 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:43:04,433 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:43:04,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-04-15 05:43:04,657 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:43:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:43:04,657 INFO L82 PathProgramCache]: Analyzing trace with hash 812194570, now seen corresponding path program 13 times [2021-04-15 05:43:04,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:43:04,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692639640] [2021-04-15 05:43:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:43:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:04,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692639640] [2021-04-15 05:43:04,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180516292] [2021-04-15 05:43:04,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:04,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:43:04,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:43:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:04,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:43:04,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-04-15 05:43:04,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639183933] [2021-04-15 05:43:04,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 05:43:04,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:43:04,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 05:43:04,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:43:04,800 INFO L87 Difference]: Start difference. First operand 99564 states and 461334 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:43:06,020 INFO L93 Difference]: Finished difference Result 127797 states and 581155 transitions. [2021-04-15 05:43:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-15 05:43:06,020 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:43:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:43:06,611 INFO L225 Difference]: With dead ends: 127797 [2021-04-15 05:43:06,612 INFO L226 Difference]: Without dead ends: 126188 [2021-04-15 05:43:06,612 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 106.2ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-04-15 05:43:07,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126188 states. [2021-04-15 05:43:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126188 to 107132. [2021-04-15 05:43:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107132 states, 107131 states have (on average 4.632711353389775) internal successors, (496307), 107131 states have internal predecessors, (496307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107132 states to 107132 states and 496307 transitions. [2021-04-15 05:43:11,159 INFO L78 Accepts]: Start accepts. Automaton has 107132 states and 496307 transitions. Word has length 25 [2021-04-15 05:43:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:43:11,159 INFO L480 AbstractCegarLoop]: Abstraction has 107132 states and 496307 transitions. [2021-04-15 05:43:11,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:11,159 INFO L276 IsEmpty]: Start isEmpty. Operand 107132 states and 496307 transitions. [2021-04-15 05:43:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:43:11,488 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:43:11,488 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:43:11,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:11,688 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:43:11,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:43:11,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1682717532, now seen corresponding path program 14 times [2021-04-15 05:43:11,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:43:11,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958488660] [2021-04-15 05:43:11,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:43:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:11,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958488660] [2021-04-15 05:43:11,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960080836] [2021-04-15 05:43:11,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:11,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:43:11,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:43:11,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:43:11,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:43:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:11,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:43:11,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-04-15 05:43:11,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269381734] [2021-04-15 05:43:11,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 05:43:11,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:43:11,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 05:43:11,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:43:11,799 INFO L87 Difference]: Start difference. First operand 107132 states and 496307 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:13,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:43:13,332 INFO L93 Difference]: Finished difference Result 111098 states and 512260 transitions. [2021-04-15 05:43:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-15 05:43:13,333 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:43:13,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:43:13,921 INFO L225 Difference]: With dead ends: 111098 [2021-04-15 05:43:13,921 INFO L226 Difference]: Without dead ends: 111014 [2021-04-15 05:43:13,921 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-04-15 05:43:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111014 states. [2021-04-15 05:43:16,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111014 to 107176. [2021-04-15 05:43:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107176 states, 107175 states have (on average 4.6319944016794965) internal successors, (496434), 107175 states have internal predecessors, (496434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:17,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107176 states to 107176 states and 496434 transitions. [2021-04-15 05:43:17,669 INFO L78 Accepts]: Start accepts. Automaton has 107176 states and 496434 transitions. Word has length 25 [2021-04-15 05:43:17,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:43:17,669 INFO L480 AbstractCegarLoop]: Abstraction has 107176 states and 496434 transitions. [2021-04-15 05:43:17,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:17,670 INFO L276 IsEmpty]: Start isEmpty. Operand 107176 states and 496434 transitions. [2021-04-15 05:43:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:43:17,982 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:43:17,982 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:43:18,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-04-15 05:43:18,183 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:43:18,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:43:18,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1176441750, now seen corresponding path program 7 times [2021-04-15 05:43:18,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:43:18,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764057150] [2021-04-15 05:43:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:43:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:18,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764057150] [2021-04-15 05:43:18,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686597397] [2021-04-15 05:43:18,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:43:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:18,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:43:18,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:18,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:43:18,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:43:18,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26283439] [2021-04-15 05:43:18,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:43:18,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:43:18,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:43:18,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:18,295 INFO L87 Difference]: Start difference. First operand 107176 states and 496434 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:43:19,803 INFO L93 Difference]: Finished difference Result 109645 states and 506156 transitions. [2021-04-15 05:43:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:43:19,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:43:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:43:20,801 INFO L225 Difference]: With dead ends: 109645 [2021-04-15 05:43:20,801 INFO L226 Difference]: Without dead ends: 109545 [2021-04-15 05:43:20,802 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:21,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109545 states. [2021-04-15 05:43:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109545 to 107247. [2021-04-15 05:43:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107247 states, 107246 states have (on average 4.632191410402252) internal successors, (496784), 107246 states have internal predecessors, (496784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107247 states to 107247 states and 496784 transitions. [2021-04-15 05:43:25,223 INFO L78 Accepts]: Start accepts. Automaton has 107247 states and 496784 transitions. Word has length 25 [2021-04-15 05:43:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:43:25,224 INFO L480 AbstractCegarLoop]: Abstraction has 107247 states and 496784 transitions. [2021-04-15 05:43:25,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 107247 states and 496784 transitions. [2021-04-15 05:43:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:43:25,578 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:43:25,578 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:43:25,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:25,779 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:43:25,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:43:25,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1470680270, now seen corresponding path program 8 times [2021-04-15 05:43:25,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:43:25,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887157864] [2021-04-15 05:43:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:43:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:25,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887157864] [2021-04-15 05:43:25,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455159892] [2021-04-15 05:43:25,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:25,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:43:25,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:43:25,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:43:25,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:43:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:25,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:43:25,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:43:25,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141326979] [2021-04-15 05:43:25,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:43:25,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:43:25,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:43:25,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:25,950 INFO L87 Difference]: Start difference. First operand 107247 states and 496784 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:43:27,460 INFO L93 Difference]: Finished difference Result 109935 states and 507541 transitions. [2021-04-15 05:43:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:43:27,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:43:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:43:28,033 INFO L225 Difference]: With dead ends: 109935 [2021-04-15 05:43:28,033 INFO L226 Difference]: Without dead ends: 109835 [2021-04-15 05:43:28,033 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109835 states. [2021-04-15 05:43:30,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109835 to 107294. [2021-04-15 05:43:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107294 states, 107293 states have (on average 4.6324830138033235) internal successors, (497033), 107293 states have internal predecessors, (497033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107294 states to 107294 states and 497033 transitions. [2021-04-15 05:43:31,958 INFO L78 Accepts]: Start accepts. Automaton has 107294 states and 497033 transitions. Word has length 25 [2021-04-15 05:43:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:43:31,958 INFO L480 AbstractCegarLoop]: Abstraction has 107294 states and 497033 transitions. [2021-04-15 05:43:31,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 107294 states and 497033 transitions. [2021-04-15 05:43:32,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:43:32,254 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:43:32,254 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:43:32,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:32,454 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:43:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:43:32,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1996714358, now seen corresponding path program 9 times [2021-04-15 05:43:32,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:43:32,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882383617] [2021-04-15 05:43:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:43:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:43:32,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882383617] [2021-04-15 05:43:32,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550842934] [2021-04-15 05:43:32,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:32,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 05:43:32,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:43:32,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:43:32,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:43:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:43:32,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:43:32,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:43:32,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346104897] [2021-04-15 05:43:32,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:43:32,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:43:32,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:43:32,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:32,604 INFO L87 Difference]: Start difference. First operand 107294 states and 497033 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:34,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:43:34,078 INFO L93 Difference]: Finished difference Result 108174 states and 500464 transitions. [2021-04-15 05:43:34,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:43:34,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:43:34,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:43:34,679 INFO L225 Difference]: With dead ends: 108174 [2021-04-15 05:43:34,680 INFO L226 Difference]: Without dead ends: 108098 [2021-04-15 05:43:34,680 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108098 states. [2021-04-15 05:43:37,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108098 to 107338. [2021-04-15 05:43:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107338 states, 107337 states have (on average 4.632307591976671) internal successors, (497218), 107337 states have internal predecessors, (497218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:38,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107338 states to 107338 states and 497218 transitions. [2021-04-15 05:43:38,299 INFO L78 Accepts]: Start accepts. Automaton has 107338 states and 497218 transitions. Word has length 25 [2021-04-15 05:43:38,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:43:38,299 INFO L480 AbstractCegarLoop]: Abstraction has 107338 states and 497218 transitions. [2021-04-15 05:43:38,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:38,299 INFO L276 IsEmpty]: Start isEmpty. Operand 107338 states and 497218 transitions. [2021-04-15 05:43:38,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:43:38,618 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:43:38,619 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:43:38,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-04-15 05:43:38,821 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:43:38,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:43:38,822 INFO L82 PathProgramCache]: Analyzing trace with hash -247614478, now seen corresponding path program 10 times [2021-04-15 05:43:38,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:43:38,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460747918] [2021-04-15 05:43:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:43:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:43:38,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460747918] [2021-04-15 05:43:38,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109674966] [2021-04-15 05:43:38,890 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:38,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:43:38,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:43:38,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:43:38,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:43:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:43:38,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:43:38,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:43:38,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602131340] [2021-04-15 05:43:38,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:43:38,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:43:38,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:43:38,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:38,987 INFO L87 Difference]: Start difference. First operand 107338 states and 497218 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:40,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:43:40,505 INFO L93 Difference]: Finished difference Result 108674 states and 502502 transitions. [2021-04-15 05:43:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:43:40,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:43:40,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:43:41,039 INFO L225 Difference]: With dead ends: 108674 [2021-04-15 05:43:41,039 INFO L226 Difference]: Without dead ends: 108586 [2021-04-15 05:43:41,039 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 67.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108586 states. [2021-04-15 05:43:43,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108586 to 107368. [2021-04-15 05:43:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107368 states, 107367 states have (on average 4.632466214013617) internal successors, (497374), 107367 states have internal predecessors, (497374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107368 states to 107368 states and 497374 transitions. [2021-04-15 05:43:44,607 INFO L78 Accepts]: Start accepts. Automaton has 107368 states and 497374 transitions. Word has length 25 [2021-04-15 05:43:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:43:44,608 INFO L480 AbstractCegarLoop]: Abstraction has 107368 states and 497374 transitions. [2021-04-15 05:43:44,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 107368 states and 497374 transitions. [2021-04-15 05:43:44,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:43:44,922 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:43:44,922 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:43:45,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:45,122 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:43:45,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:43:45,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1683892410, now seen corresponding path program 11 times [2021-04-15 05:43:45,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:43:45,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179559605] [2021-04-15 05:43:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:43:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:45,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179559605] [2021-04-15 05:43:45,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107267671] [2021-04-15 05:43:45,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:43:45,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:43:45,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:43:45,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:43:45,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:45,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:43:45,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:43:45,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601458799] [2021-04-15 05:43:45,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:43:45,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:43:45,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:43:45,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:45,245 INFO L87 Difference]: Start difference. First operand 107368 states and 497374 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:43:46,807 INFO L93 Difference]: Finished difference Result 109338 states and 505111 transitions. [2021-04-15 05:43:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:43:46,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:43:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:43:47,322 INFO L225 Difference]: With dead ends: 109338 [2021-04-15 05:43:47,322 INFO L226 Difference]: Without dead ends: 109238 [2021-04-15 05:43:47,322 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109238 states. [2021-04-15 05:43:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109238 to 107385. [2021-04-15 05:43:50,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107385 states, 107384 states have (on average 4.63280376964911) internal successors, (497489), 107384 states have internal predecessors, (497489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107385 states to 107385 states and 497489 transitions. [2021-04-15 05:43:51,150 INFO L78 Accepts]: Start accepts. Automaton has 107385 states and 497489 transitions. Word has length 25 [2021-04-15 05:43:51,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:43:51,151 INFO L480 AbstractCegarLoop]: Abstraction has 107385 states and 497489 transitions. [2021-04-15 05:43:51,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:51,151 INFO L276 IsEmpty]: Start isEmpty. Operand 107385 states and 497489 transitions. [2021-04-15 05:43:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:43:51,476 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:43:51,476 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:43:51,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:51,677 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:43:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:43:51,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1492192234, now seen corresponding path program 17 times [2021-04-15 05:43:51,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:43:51,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763905792] [2021-04-15 05:43:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:43:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:51,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763905792] [2021-04-15 05:43:51,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650761766] [2021-04-15 05:43:51,701 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:51,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 05:43:51,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:43:51,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:43:51,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:43:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:43:51,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:43:51,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-04-15 05:43:51,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586381648] [2021-04-15 05:43:51,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 05:43:51,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:43:51,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 05:43:51,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:43:51,780 INFO L87 Difference]: Start difference. First operand 107385 states and 497489 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:43:53,453 INFO L93 Difference]: Finished difference Result 128991 states and 589145 transitions. [2021-04-15 05:43:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-15 05:43:53,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:43:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:43:54,057 INFO L225 Difference]: With dead ends: 128991 [2021-04-15 05:43:54,057 INFO L226 Difference]: Without dead ends: 128991 [2021-04-15 05:43:54,057 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 73.1ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-04-15 05:43:54,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128991 states. [2021-04-15 05:43:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128991 to 111610. [2021-04-15 05:43:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111610 states, 111609 states have (on average 4.633667535772204) internal successors, (517159), 111609 states have internal predecessors, (517159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111610 states to 111610 states and 517159 transitions. [2021-04-15 05:43:58,004 INFO L78 Accepts]: Start accepts. Automaton has 111610 states and 517159 transitions. Word has length 25 [2021-04-15 05:43:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:43:58,004 INFO L480 AbstractCegarLoop]: Abstraction has 111610 states and 517159 transitions. [2021-04-15 05:43:58,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:43:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 111610 states and 517159 transitions. [2021-04-15 05:43:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:43:58,285 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:43:58,285 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:43:58,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:58,486 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:43:58,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:43:58,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1850358678, now seen corresponding path program 12 times [2021-04-15 05:43:58,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:43:58,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198943233] [2021-04-15 05:43:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:43:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:43:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:43:58,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198943233] [2021-04-15 05:43:58,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304478914] [2021-04-15 05:43:58,541 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:43:58,565 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-04-15 05:43:58,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:43:58,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:43:58,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:43:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:43:58,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:43:58,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:43:58,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148495202] [2021-04-15 05:43:58,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:43:58,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:43:58,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:43:58,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:43:58,614 INFO L87 Difference]: Start difference. First operand 111610 states and 517159 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:44:00,203 INFO L93 Difference]: Finished difference Result 114140 states and 527155 transitions. [2021-04-15 05:44:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:44:00,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:44:00,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:44:00,764 INFO L225 Difference]: With dead ends: 114140 [2021-04-15 05:44:00,764 INFO L226 Difference]: Without dead ends: 114040 [2021-04-15 05:44:00,764 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114040 states. [2021-04-15 05:44:04,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114040 to 111636. [2021-04-15 05:44:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111636 states, 111635 states have (on average 4.634146996909571) internal successors, (517333), 111635 states have internal predecessors, (517333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:05,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111636 states to 111636 states and 517333 transitions. [2021-04-15 05:44:05,007 INFO L78 Accepts]: Start accepts. Automaton has 111636 states and 517333 transitions. Word has length 25 [2021-04-15 05:44:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:44:05,007 INFO L480 AbstractCegarLoop]: Abstraction has 111636 states and 517333 transitions. [2021-04-15 05:44:05,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 111636 states and 517333 transitions. [2021-04-15 05:44:06,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:44:06,073 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:44:06,074 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:44:06,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:44:06,302 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:44:06,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:44:06,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1617035950, now seen corresponding path program 13 times [2021-04-15 05:44:06,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:44:06,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406640628] [2021-04-15 05:44:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:44:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:44:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:44:06,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406640628] [2021-04-15 05:44:06,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258065395] [2021-04-15 05:44:06,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:44:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:44:06,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:44:06,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:44:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:44:06,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:44:06,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:44:06,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965992795] [2021-04-15 05:44:06,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:44:06,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:44:06,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:44:06,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:06,458 INFO L87 Difference]: Start difference. First operand 111636 states and 517333 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:07,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:44:07,407 INFO L93 Difference]: Finished difference Result 114254 states and 527699 transitions. [2021-04-15 05:44:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:44:07,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:44:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:44:07,861 INFO L225 Difference]: With dead ends: 114254 [2021-04-15 05:44:07,861 INFO L226 Difference]: Without dead ends: 114178 [2021-04-15 05:44:07,862 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:08,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114178 states. [2021-04-15 05:44:11,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114178 to 111663. [2021-04-15 05:44:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111663 states, 111662 states have (on average 4.6343697945585784) internal successors, (517483), 111662 states have internal predecessors, (517483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111663 states to 111663 states and 517483 transitions. [2021-04-15 05:44:12,544 INFO L78 Accepts]: Start accepts. Automaton has 111663 states and 517483 transitions. Word has length 25 [2021-04-15 05:44:12,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:44:12,544 INFO L480 AbstractCegarLoop]: Abstraction has 111663 states and 517483 transitions. [2021-04-15 05:44:12,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:12,544 INFO L276 IsEmpty]: Start isEmpty. Operand 111663 states and 517483 transitions. [2021-04-15 05:44:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:44:12,920 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:44:12,920 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:44:13,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-04-15 05:44:13,129 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:44:13,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:44:13,129 INFO L82 PathProgramCache]: Analyzing trace with hash 132063930, now seen corresponding path program 14 times [2021-04-15 05:44:13,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:44:13,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230942823] [2021-04-15 05:44:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:44:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:44:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:44:13,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230942823] [2021-04-15 05:44:13,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622304002] [2021-04-15 05:44:13,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:44:13,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:44:13,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:44:13,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:44:13,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:44:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:44:13,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:44:13,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:44:13,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403858335] [2021-04-15 05:44:13,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:44:13,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:44:13,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:44:13,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:13,309 INFO L87 Difference]: Start difference. First operand 111663 states and 517483 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:14,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:44:14,144 INFO L93 Difference]: Finished difference Result 113450 states and 524443 transitions. [2021-04-15 05:44:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:44:14,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:44:14,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:44:15,417 INFO L225 Difference]: With dead ends: 113450 [2021-04-15 05:44:15,418 INFO L226 Difference]: Without dead ends: 113362 [2021-04-15 05:44:15,418 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113362 states. [2021-04-15 05:44:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113362 to 111672. [2021-04-15 05:44:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111672 states, 111671 states have (on average 4.6346141791512565) internal successors, (517552), 111671 states have internal predecessors, (517552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111672 states to 111672 states and 517552 transitions. [2021-04-15 05:44:19,569 INFO L78 Accepts]: Start accepts. Automaton has 111672 states and 517552 transitions. Word has length 25 [2021-04-15 05:44:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:44:19,569 INFO L480 AbstractCegarLoop]: Abstraction has 111672 states and 517552 transitions. [2021-04-15 05:44:19,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 111672 states and 517552 transitions. [2021-04-15 05:44:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:44:19,979 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:44:19,979 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:44:20,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-04-15 05:44:20,203 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:44:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:44:20,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1826075754, now seen corresponding path program 15 times [2021-04-15 05:44:20,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:44:20,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667261441] [2021-04-15 05:44:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:44:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:44:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:44:20,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667261441] [2021-04-15 05:44:20,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929616469] [2021-04-15 05:44:20,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:44:20,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 05:44:20,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:44:20,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:44:20,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:44:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:44:20,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:44:20,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:44:20,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163849659] [2021-04-15 05:44:20,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:44:20,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:44:20,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:44:20,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:20,370 INFO L87 Difference]: Start difference. First operand 111672 states and 517552 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:44:22,027 INFO L93 Difference]: Finished difference Result 114189 states and 527397 transitions. [2021-04-15 05:44:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:44:22,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:44:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:44:22,496 INFO L225 Difference]: With dead ends: 114189 [2021-04-15 05:44:22,497 INFO L226 Difference]: Without dead ends: 114113 [2021-04-15 05:44:22,497 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114113 states. [2021-04-15 05:44:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114113 to 111714. [2021-04-15 05:44:25,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111714 states, 111713 states have (on average 4.635029047648886) internal successors, (517793), 111713 states have internal predecessors, (517793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111714 states to 111714 states and 517793 transitions. [2021-04-15 05:44:26,583 INFO L78 Accepts]: Start accepts. Automaton has 111714 states and 517793 transitions. Word has length 25 [2021-04-15 05:44:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:44:26,583 INFO L480 AbstractCegarLoop]: Abstraction has 111714 states and 517793 transitions. [2021-04-15 05:44:26,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 111714 states and 517793 transitions. [2021-04-15 05:44:27,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:44:27,613 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:44:27,613 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:44:27,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-04-15 05:44:27,814 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:44:27,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:44:27,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1125159402, now seen corresponding path program 16 times [2021-04-15 05:44:27,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:44:27,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102667105] [2021-04-15 05:44:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:44:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:44:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:44:27,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102667105] [2021-04-15 05:44:27,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460722975] [2021-04-15 05:44:27,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:44:27,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:44:27,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:44:27,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:44:27,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:44:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:44:27,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:44:27,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:44:27,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650279304] [2021-04-15 05:44:27,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:44:27,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:44:27,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:44:27,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:27,950 INFO L87 Difference]: Start difference. First operand 111714 states and 517793 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:44:28,858 INFO L93 Difference]: Finished difference Result 113867 states and 526305 transitions. [2021-04-15 05:44:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:44:28,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:44:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:44:29,398 INFO L225 Difference]: With dead ends: 113867 [2021-04-15 05:44:29,398 INFO L226 Difference]: Without dead ends: 113791 [2021-04-15 05:44:29,398 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:29,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113791 states. [2021-04-15 05:44:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113791 to 111736. [2021-04-15 05:44:32,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111736 states, 111735 states have (on average 4.635342551572918) internal successors, (517930), 111735 states have internal predecessors, (517930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111736 states to 111736 states and 517930 transitions. [2021-04-15 05:44:33,286 INFO L78 Accepts]: Start accepts. Automaton has 111736 states and 517930 transitions. Word has length 25 [2021-04-15 05:44:33,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:44:33,286 INFO L480 AbstractCegarLoop]: Abstraction has 111736 states and 517930 transitions. [2021-04-15 05:44:33,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 111736 states and 517930 transitions. [2021-04-15 05:44:34,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:44:34,443 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:44:34,443 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:44:34,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:44:34,644 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:44:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:44:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1420708014, now seen corresponding path program 17 times [2021-04-15 05:44:34,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:44:34,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050834489] [2021-04-15 05:44:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:44:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:44:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:44:34,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050834489] [2021-04-15 05:44:34,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465419046] [2021-04-15 05:44:34,721 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:44:34,755 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 05:44:34,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:44:34,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:44:34,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:44:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:44:34,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:44:34,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:44:34,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467953570] [2021-04-15 05:44:34,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:44:34,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:44:34,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:44:34,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:34,814 INFO L87 Difference]: Start difference. First operand 111736 states and 517930 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:35,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:44:35,916 INFO L93 Difference]: Finished difference Result 113238 states and 523749 transitions. [2021-04-15 05:44:35,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:44:35,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:44:35,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:44:37,221 INFO L225 Difference]: With dead ends: 113238 [2021-04-15 05:44:37,221 INFO L226 Difference]: Without dead ends: 113150 [2021-04-15 05:44:37,221 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 72.5ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:44:37,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113150 states. [2021-04-15 05:44:39,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113150 to 111747. [2021-04-15 05:44:40,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111747 states, 111746 states have (on average 4.63561111807134) internal successors, (518011), 111746 states have internal predecessors, (518011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111747 states to 111747 states and 518011 transitions. [2021-04-15 05:44:41,262 INFO L78 Accepts]: Start accepts. Automaton has 111747 states and 518011 transitions. Word has length 25 [2021-04-15 05:44:41,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:44:41,262 INFO L480 AbstractCegarLoop]: Abstraction has 111747 states and 518011 transitions. [2021-04-15 05:44:41,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 111747 states and 518011 transitions. [2021-04-15 05:44:41,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:44:41,707 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:44:41,708 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:44:41,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-04-15 05:44:41,908 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:44:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:44:41,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1658453014, now seen corresponding path program 18 times [2021-04-15 05:44:41,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:44:41,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133085860] [2021-04-15 05:44:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:44:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:44:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:44:41,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133085860] [2021-04-15 05:44:41,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929334954] [2021-04-15 05:44:41,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:44:41,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-04-15 05:44:41,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:44:41,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 05:44:41,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:44:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:44:42,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:44:42,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-04-15 05:44:42,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975592256] [2021-04-15 05:44:42,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:44:42,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:44:42,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:44:42,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:44:42,053 INFO L87 Difference]: Start difference. First operand 111747 states and 518011 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:44,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:44:44,352 INFO L93 Difference]: Finished difference Result 177468 states and 809581 transitions. [2021-04-15 05:44:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 05:44:44,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:44:44,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:44:45,332 INFO L225 Difference]: With dead ends: 177468 [2021-04-15 05:44:45,332 INFO L226 Difference]: Without dead ends: 176203 [2021-04-15 05:44:45,332 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2021-04-15 05:44:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176203 states. [2021-04-15 05:44:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176203 to 133717. [2021-04-15 05:44:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133717 states, 133716 states have (on average 4.641905231984206) internal successors, (620697), 133716 states have internal predecessors, (620697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133717 states to 133717 states and 620697 transitions. [2021-04-15 05:44:51,245 INFO L78 Accepts]: Start accepts. Automaton has 133717 states and 620697 transitions. Word has length 25 [2021-04-15 05:44:51,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:44:51,245 INFO L480 AbstractCegarLoop]: Abstraction has 133717 states and 620697 transitions. [2021-04-15 05:44:51,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 133717 states and 620697 transitions. [2021-04-15 05:44:51,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:44:51,646 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:44:51,646 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:44:51,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-04-15 05:44:51,847 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:44:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:44:51,847 INFO L82 PathProgramCache]: Analyzing trace with hash 208727758, now seen corresponding path program 19 times [2021-04-15 05:44:51,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:44:51,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699984526] [2021-04-15 05:44:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:44:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:44:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:44:51,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699984526] [2021-04-15 05:44:51,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:44:51,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 05:44:51,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971306510] [2021-04-15 05:44:51,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 05:44:51,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:44:51,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 05:44:51,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:44:51,893 INFO L87 Difference]: Start difference. First operand 133717 states and 620697 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:44:53,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:44:53,965 INFO L93 Difference]: Finished difference Result 148218 states and 682182 transitions. [2021-04-15 05:44:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:44:53,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:44:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:44:54,778 INFO L225 Difference]: With dead ends: 148218 [2021-04-15 05:44:54,778 INFO L226 Difference]: Without dead ends: 148218 [2021-04-15 05:44:54,778 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:44:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148218 states. [2021-04-15 05:44:58,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148218 to 133829. [2021-04-15 05:44:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133829 states, 133828 states have (on average 4.642107780135697) internal successors, (621244), 133828 states have internal predecessors, (621244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:00,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133829 states to 133829 states and 621244 transitions. [2021-04-15 05:45:00,541 INFO L78 Accepts]: Start accepts. Automaton has 133829 states and 621244 transitions. Word has length 25 [2021-04-15 05:45:00,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:45:00,541 INFO L480 AbstractCegarLoop]: Abstraction has 133829 states and 621244 transitions. [2021-04-15 05:45:00,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:00,541 INFO L276 IsEmpty]: Start isEmpty. Operand 133829 states and 621244 transitions. [2021-04-15 05:45:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:45:00,953 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:45:00,953 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:45:00,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-04-15 05:45:00,953 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:45:00,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:45:00,953 INFO L82 PathProgramCache]: Analyzing trace with hash 537875814, now seen corresponding path program 18 times [2021-04-15 05:45:00,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:45:00,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072619542] [2021-04-15 05:45:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:45:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:45:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:45:01,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072619542] [2021-04-15 05:45:01,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180409241] [2021-04-15 05:45:01,014 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:45:01,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 05:45:01,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:45:01,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:45:01,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:45:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:45:01,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:45:01,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:45:01,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108652506] [2021-04-15 05:45:01,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:45:01,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:45:01,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:45:01,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:45:01,107 INFO L87 Difference]: Start difference. First operand 133829 states and 621244 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:45:03,058 INFO L93 Difference]: Finished difference Result 136117 states and 630322 transitions. [2021-04-15 05:45:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:45:03,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:45:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:45:03,866 INFO L225 Difference]: With dead ends: 136117 [2021-04-15 05:45:03,866 INFO L226 Difference]: Without dead ends: 136017 [2021-04-15 05:45:03,866 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:45:04,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136017 states. [2021-04-15 05:45:07,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136017 to 133843. [2021-04-15 05:45:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133843 states, 133842 states have (on average 4.642272231437068) internal successors, (621331), 133842 states have internal predecessors, (621331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133843 states to 133843 states and 621331 transitions. [2021-04-15 05:45:09,651 INFO L78 Accepts]: Start accepts. Automaton has 133843 states and 621331 transitions. Word has length 25 [2021-04-15 05:45:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:45:09,651 INFO L480 AbstractCegarLoop]: Abstraction has 133843 states and 621331 transitions. [2021-04-15 05:45:09,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 133843 states and 621331 transitions. [2021-04-15 05:45:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:45:10,119 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:45:10,119 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:45:10,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:45:10,320 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:45:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:45:10,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1365448482, now seen corresponding path program 19 times [2021-04-15 05:45:10,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:45:10,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438791504] [2021-04-15 05:45:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:45:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:45:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:45:10,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438791504] [2021-04-15 05:45:10,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40801845] [2021-04-15 05:45:10,398 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:45:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:45:10,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:45:10,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:45:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:45:10,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:45:10,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:45:10,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947320392] [2021-04-15 05:45:10,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:45:10,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:45:10,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:45:10,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:45:10,467 INFO L87 Difference]: Start difference. First operand 133843 states and 621331 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:45:12,459 INFO L93 Difference]: Finished difference Result 134882 states and 625349 transitions. [2021-04-15 05:45:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:45:12,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:45:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:45:13,129 INFO L225 Difference]: With dead ends: 134882 [2021-04-15 05:45:13,129 INFO L226 Difference]: Without dead ends: 134806 [2021-04-15 05:45:13,129 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:45:13,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134806 states. [2021-04-15 05:45:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134806 to 133853. [2021-04-15 05:45:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133853 states, 133852 states have (on average 4.642298957057048) internal successors, (621381), 133852 states have internal predecessors, (621381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133853 states to 133853 states and 621381 transitions. [2021-04-15 05:45:18,387 INFO L78 Accepts]: Start accepts. Automaton has 133853 states and 621381 transitions. Word has length 25 [2021-04-15 05:45:18,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:45:18,388 INFO L480 AbstractCegarLoop]: Abstraction has 133853 states and 621381 transitions. [2021-04-15 05:45:18,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 133853 states and 621381 transitions. [2021-04-15 05:45:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:45:18,839 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:45:18,839 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:45:19,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:45:19,053 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:45:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:45:19,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1180418934, now seen corresponding path program 20 times [2021-04-15 05:45:19,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:45:19,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370402382] [2021-04-15 05:45:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:45:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:45:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:45:19,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370402382] [2021-04-15 05:45:19,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343199309] [2021-04-15 05:45:19,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:45:19,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:45:19,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:45:19,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:45:19,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:45:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:45:19,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:45:19,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:45:19,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677104224] [2021-04-15 05:45:19,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:45:19,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:45:19,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:45:19,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:45:19,945 INFO L87 Difference]: Start difference. First operand 133853 states and 621381 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:21,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:45:21,329 INFO L93 Difference]: Finished difference Result 135171 states and 626564 transitions. [2021-04-15 05:45:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:45:21,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:45:21,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:45:22,034 INFO L225 Difference]: With dead ends: 135171 [2021-04-15 05:45:22,034 INFO L226 Difference]: Without dead ends: 135083 [2021-04-15 05:45:22,035 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 755.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:45:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135083 states. [2021-04-15 05:45:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135083 to 133857. [2021-04-15 05:45:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133857 states, 133856 states have (on average 4.642414236194119) internal successors, (621415), 133856 states have internal predecessors, (621415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133857 states to 133857 states and 621415 transitions. [2021-04-15 05:45:27,241 INFO L78 Accepts]: Start accepts. Automaton has 133857 states and 621415 transitions. Word has length 25 [2021-04-15 05:45:27,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:45:27,241 INFO L480 AbstractCegarLoop]: Abstraction has 133857 states and 621415 transitions. [2021-04-15 05:45:27,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 133857 states and 621415 transitions. [2021-04-15 05:45:27,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-04-15 05:45:27,580 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:45:27,580 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:45:27,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:45:27,781 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:45:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:45:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash 751087954, now seen corresponding path program 21 times [2021-04-15 05:45:27,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:45:27,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391577579] [2021-04-15 05:45:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:45:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:45:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:45:27,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391577579] [2021-04-15 05:45:27,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733753412] [2021-04-15 05:45:27,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:45:27,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 05:45:27,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:45:27,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-04-15 05:45:27,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:45:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:45:27,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:45:27,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-04-15 05:45:27,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628432123] [2021-04-15 05:45:27,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 05:45:27,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:45:27,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 05:45:27,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:45:27,891 INFO L87 Difference]: Start difference. First operand 133857 states and 621415 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:45:29,655 INFO L93 Difference]: Finished difference Result 135454 states and 627652 transitions. [2021-04-15 05:45:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 05:45:29,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-04-15 05:45:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:45:30,279 INFO L225 Difference]: With dead ends: 135454 [2021-04-15 05:45:30,279 INFO L226 Difference]: Without dead ends: 135354 [2021-04-15 05:45:30,279 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-15 05:45:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135354 states. [2021-04-15 05:45:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135354 to 133859. [2021-04-15 05:45:34,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133859 states, 133858 states have (on average 4.642673579464806) internal successors, (621459), 133858 states have internal predecessors, (621459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133859 states to 133859 states and 621459 transitions. [2021-04-15 05:45:35,607 INFO L78 Accepts]: Start accepts. Automaton has 133859 states and 621459 transitions. Word has length 25 [2021-04-15 05:45:35,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:45:35,607 INFO L480 AbstractCegarLoop]: Abstraction has 133859 states and 621459 transitions. [2021-04-15 05:45:35,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:35,608 INFO L276 IsEmpty]: Start isEmpty. Operand 133859 states and 621459 transitions. [2021-04-15 05:45:36,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:45:36,073 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:45:36,073 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:45:36,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-04-15 05:45:36,274 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:45:36,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:45:36,274 INFO L82 PathProgramCache]: Analyzing trace with hash 882333870, now seen corresponding path program 19 times [2021-04-15 05:45:36,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:45:36,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955948588] [2021-04-15 05:45:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:45:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:45:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:45:36,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955948588] [2021-04-15 05:45:36,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610358929] [2021-04-15 05:45:36,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:45:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:45:36,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:45:36,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:45:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:45:36,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:45:36,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-04-15 05:45:36,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043836622] [2021-04-15 05:45:36,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 05:45:36,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:45:36,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 05:45:36,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:45:36,391 INFO L87 Difference]: Start difference. First operand 133859 states and 621459 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:38,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:45:38,867 INFO L93 Difference]: Finished difference Result 190154 states and 876059 transitions. [2021-04-15 05:45:38,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 05:45:38,867 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:45:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:45:39,894 INFO L225 Difference]: With dead ends: 190154 [2021-04-15 05:45:39,894 INFO L226 Difference]: Without dead ends: 189001 [2021-04-15 05:45:39,894 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-04-15 05:45:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189001 states. [2021-04-15 05:45:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189001 to 167663. [2021-04-15 05:45:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167663 states, 167662 states have (on average 4.639912442891054) internal successors, (777937), 167662 states have internal predecessors, (777937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167663 states to 167663 states and 777937 transitions. [2021-04-15 05:45:47,447 INFO L78 Accepts]: Start accepts. Automaton has 167663 states and 777937 transitions. Word has length 27 [2021-04-15 05:45:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:45:47,448 INFO L480 AbstractCegarLoop]: Abstraction has 167663 states and 777937 transitions. [2021-04-15 05:45:47,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 167663 states and 777937 transitions. [2021-04-15 05:45:47,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:45:47,979 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:45:47,980 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:45:48,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-04-15 05:45:48,180 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:45:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:45:48,180 INFO L82 PathProgramCache]: Analyzing trace with hash 864085738, now seen corresponding path program 15 times [2021-04-15 05:45:48,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:45:48,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362569619] [2021-04-15 05:45:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:45:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:45:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:45:48,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362569619] [2021-04-15 05:45:48,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504513421] [2021-04-15 05:45:48,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:45:48,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 05:45:48,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:45:48,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-04-15 05:45:48,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:45:48,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:45:48,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:45:48,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-04-15 05:45:48,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546156977] [2021-04-15 05:45:48,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 05:45:48,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:45:48,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 05:45:48,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-04-15 05:45:48,304 INFO L87 Difference]: Start difference. First operand 167663 states and 777937 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:45:50,767 INFO L93 Difference]: Finished difference Result 197247 states and 909451 transitions. [2021-04-15 05:45:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 05:45:50,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:45:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:45:51,746 INFO L225 Difference]: With dead ends: 197247 [2021-04-15 05:45:51,746 INFO L226 Difference]: Without dead ends: 197005 [2021-04-15 05:45:51,746 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-04-15 05:45:52,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197005 states. [2021-04-15 05:45:56,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197005 to 168802. [2021-04-15 05:45:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168802 states, 168801 states have (on average 4.642656145401983) internal successors, (783685), 168801 states have internal predecessors, (783685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168802 states to 168802 states and 783685 transitions. [2021-04-15 05:45:58,822 INFO L78 Accepts]: Start accepts. Automaton has 168802 states and 783685 transitions. Word has length 27 [2021-04-15 05:45:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:45:58,822 INFO L480 AbstractCegarLoop]: Abstraction has 168802 states and 783685 transitions. [2021-04-15 05:45:58,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:45:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 168802 states and 783685 transitions. [2021-04-15 05:45:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:45:59,358 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:45:59,358 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:45:59,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-04-15 05:45:59,559 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:45:59,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:45:59,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1674557870, now seen corresponding path program 9 times [2021-04-15 05:45:59,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:45:59,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278553896] [2021-04-15 05:45:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:45:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:45:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:45:59,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278553896] [2021-04-15 05:45:59,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689571117] [2021-04-15 05:45:59,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:45:59,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 05:45:59,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:45:59,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:45:59,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:45:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:45:59,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:45:59,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-04-15 05:45:59,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770662953] [2021-04-15 05:45:59,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 05:45:59,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:45:59,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 05:45:59,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:45:59,695 INFO L87 Difference]: Start difference. First operand 168802 states and 783685 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:01,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:46:01,960 INFO L93 Difference]: Finished difference Result 170680 states and 790805 transitions. [2021-04-15 05:46:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 05:46:01,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:46:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:46:02,763 INFO L225 Difference]: With dead ends: 170680 [2021-04-15 05:46:02,763 INFO L226 Difference]: Without dead ends: 170598 [2021-04-15 05:46:02,764 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 9 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-04-15 05:46:03,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170598 states. [2021-04-15 05:46:07,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170598 to 168961. [2021-04-15 05:46:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168961 states, 168960 states have (on average 4.642459753787879) internal successors, (784390), 168960 states have internal predecessors, (784390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168961 states to 168961 states and 784390 transitions. [2021-04-15 05:46:09,703 INFO L78 Accepts]: Start accepts. Automaton has 168961 states and 784390 transitions. Word has length 27 [2021-04-15 05:46:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:46:09,704 INFO L480 AbstractCegarLoop]: Abstraction has 168961 states and 784390 transitions. [2021-04-15 05:46:09,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 168961 states and 784390 transitions. [2021-04-15 05:46:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:46:10,264 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:46:10,264 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:46:10,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-04-15 05:46:10,464 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:46:10,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:46:10,465 INFO L82 PathProgramCache]: Analyzing trace with hash 871441812, now seen corresponding path program 10 times [2021-04-15 05:46:10,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:46:10,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984632461] [2021-04-15 05:46:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:46:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:46:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:46:10,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984632461] [2021-04-15 05:46:10,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560587770] [2021-04-15 05:46:10,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-04-15 05:46:10,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:46:10,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:46:10,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:46:10,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:46:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:46:10,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:46:10,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-04-15 05:46:10,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434571889] [2021-04-15 05:46:10,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 05:46:10,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:46:10,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 05:46:10,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:46:10,642 INFO L87 Difference]: Start difference. First operand 168961 states and 784390 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:46:13,464 INFO L93 Difference]: Finished difference Result 169759 states and 787360 transitions. [2021-04-15 05:46:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:46:13,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:46:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:46:14,779 INFO L225 Difference]: With dead ends: 169759 [2021-04-15 05:46:14,779 INFO L226 Difference]: Without dead ends: 169677 [2021-04-15 05:46:14,779 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 74.0ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:46:15,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169677 states. [2021-04-15 05:46:20,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169677 to 168995. [2021-04-15 05:46:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168995 states, 168994 states have (on average 4.642513935405991) internal successors, (784557), 168994 states have internal predecessors, (784557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168995 states to 168995 states and 784557 transitions. [2021-04-15 05:46:21,467 INFO L78 Accepts]: Start accepts. Automaton has 168995 states and 784557 transitions. Word has length 27 [2021-04-15 05:46:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:46:21,467 INFO L480 AbstractCegarLoop]: Abstraction has 168995 states and 784557 transitions. [2021-04-15 05:46:21,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 168995 states and 784557 transitions. [2021-04-15 05:46:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:46:22,946 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:46:22,946 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:46:23,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:46:23,161 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:46:23,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:46:23,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1359658504, now seen corresponding path program 11 times [2021-04-15 05:46:23,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:46:23,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137204011] [2021-04-15 05:46:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:46:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:46:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:46:23,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137204011] [2021-04-15 05:46:23,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721403350] [2021-04-15 05:46:23,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:46:23,259 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-04-15 05:46:23,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:46:23,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:46:23,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:46:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-04-15 05:46:23,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:46:23,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-04-15 05:46:23,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870821078] [2021-04-15 05:46:23,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 05:46:23,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:46:23,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 05:46:23,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:46:23,317 INFO L87 Difference]: Start difference. First operand 168995 states and 784557 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:25,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:46:25,468 INFO L93 Difference]: Finished difference Result 170167 states and 789041 transitions. [2021-04-15 05:46:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:46:25,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:46:25,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:46:26,431 INFO L225 Difference]: With dead ends: 170167 [2021-04-15 05:46:26,431 INFO L226 Difference]: Without dead ends: 170103 [2021-04-15 05:46:26,432 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:46:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170103 states. [2021-04-15 05:46:30,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170103 to 169031. [2021-04-15 05:46:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169031 states, 169030 states have (on average 4.6426492338638115) internal successors, (784747), 169030 states have internal predecessors, (784747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169031 states to 169031 states and 784747 transitions. [2021-04-15 05:46:32,632 INFO L78 Accepts]: Start accepts. Automaton has 169031 states and 784747 transitions. Word has length 27 [2021-04-15 05:46:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:46:32,632 INFO L480 AbstractCegarLoop]: Abstraction has 169031 states and 784747 transitions. [2021-04-15 05:46:32,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 169031 states and 784747 transitions. [2021-04-15 05:46:33,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:46:33,189 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:46:33,189 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:46:33,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-04-15 05:46:33,390 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:46:33,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:46:33,390 INFO L82 PathProgramCache]: Analyzing trace with hash -12880078, now seen corresponding path program 1 times [2021-04-15 05:46:33,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:46:33,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55857147] [2021-04-15 05:46:33,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:46:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:46:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:46:33,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55857147] [2021-04-15 05:46:33,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136501034] [2021-04-15 05:46:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:46:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:46:33,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:46:33,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:46:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:46:33,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:46:33,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-04-15 05:46:33,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30191359] [2021-04-15 05:46:33,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:46:33,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:46:33,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:46:33,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:46:33,511 INFO L87 Difference]: Start difference. First operand 169031 states and 784747 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:46:37,072 INFO L93 Difference]: Finished difference Result 231052 states and 1059448 transitions. [2021-04-15 05:46:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-04-15 05:46:37,073 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:46:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:46:38,514 INFO L225 Difference]: With dead ends: 231052 [2021-04-15 05:46:38,514 INFO L226 Difference]: Without dead ends: 230212 [2021-04-15 05:46:38,514 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-04-15 05:46:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230212 states. [2021-04-15 05:46:44,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230212 to 215303. [2021-04-15 05:46:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215303 states, 215302 states have (on average 4.630277470715553) internal successors, (996908), 215302 states have internal predecessors, (996908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215303 states to 215303 states and 996908 transitions. [2021-04-15 05:46:47,338 INFO L78 Accepts]: Start accepts. Automaton has 215303 states and 996908 transitions. Word has length 27 [2021-04-15 05:46:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:46:47,338 INFO L480 AbstractCegarLoop]: Abstraction has 215303 states and 996908 transitions. [2021-04-15 05:46:47,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:47,338 INFO L276 IsEmpty]: Start isEmpty. Operand 215303 states and 996908 transitions. [2021-04-15 05:46:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:46:48,862 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:46:48,862 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:46:49,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-04-15 05:46:49,077 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:46:49,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:46:49,077 INFO L82 PathProgramCache]: Analyzing trace with hash 437854002, now seen corresponding path program 2 times [2021-04-15 05:46:49,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:46:49,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822129683] [2021-04-15 05:46:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:46:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:46:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:46:49,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822129683] [2021-04-15 05:46:49,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693371495] [2021-04-15 05:46:49,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:46:49,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:46:49,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:46:49,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:46:49,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:46:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:46:49,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:46:49,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-04-15 05:46:49,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454563117] [2021-04-15 05:46:49,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:46:49,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:46:49,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:46:49,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:46:49,203 INFO L87 Difference]: Start difference. First operand 215303 states and 996908 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:46:52,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:46:52,186 INFO L93 Difference]: Finished difference Result 296156 states and 1355402 transitions. [2021-04-15 05:46:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 05:46:52,186 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:46:52,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:46:54,516 INFO L225 Difference]: With dead ends: 296156 [2021-04-15 05:46:54,516 INFO L226 Difference]: Without dead ends: 294999 [2021-04-15 05:46:54,517 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-04-15 05:46:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294999 states. [2021-04-15 05:47:02,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294999 to 265682. [2021-04-15 05:47:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265682 states, 265681 states have (on average 4.624143239448813) internal successors, (1228547), 265681 states have internal predecessors, (1228547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:47:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265682 states to 265682 states and 1228547 transitions. [2021-04-15 05:47:05,480 INFO L78 Accepts]: Start accepts. Automaton has 265682 states and 1228547 transitions. Word has length 27 [2021-04-15 05:47:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:47:05,480 INFO L480 AbstractCegarLoop]: Abstraction has 265682 states and 1228547 transitions. [2021-04-15 05:47:05,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:47:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 265682 states and 1228547 transitions. [2021-04-15 05:47:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:47:07,344 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:47:07,345 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:47:07,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:47:07,545 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:47:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:47:07,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1592361616, now seen corresponding path program 20 times [2021-04-15 05:47:07,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:47:07,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949612254] [2021-04-15 05:47:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:47:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:47:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:47:07,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949612254] [2021-04-15 05:47:07,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078523491] [2021-04-15 05:47:07,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:47:07,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:47:07,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:47:07,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:47:07,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:47:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:47:07,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:47:07,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-04-15 05:47:07,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244007457] [2021-04-15 05:47:07,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-15 05:47:07,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:47:07,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-15 05:47:07,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-04-15 05:47:07,695 INFO L87 Difference]: Start difference. First operand 265682 states and 1228547 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:47:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:47:10,685 INFO L93 Difference]: Finished difference Result 280030 states and 1288968 transitions. [2021-04-15 05:47:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-15 05:47:10,685 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:47:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:47:13,649 INFO L225 Difference]: With dead ends: 280030 [2021-04-15 05:47:13,650 INFO L226 Difference]: Without dead ends: 279981 [2021-04-15 05:47:13,650 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2021-04-15 05:47:14,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279981 states. [2021-04-15 05:47:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279981 to 265735. [2021-04-15 05:47:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265735 states, 265734 states have (on average 4.623932202879572) internal successors, (1228736), 265734 states have internal predecessors, (1228736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:47:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265735 states to 265735 states and 1228736 transitions. [2021-04-15 05:47:26,828 INFO L78 Accepts]: Start accepts. Automaton has 265735 states and 1228736 transitions. Word has length 27 [2021-04-15 05:47:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:47:26,828 INFO L480 AbstractCegarLoop]: Abstraction has 265735 states and 1228736 transitions. [2021-04-15 05:47:26,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:47:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 265735 states and 1228736 transitions. [2021-04-15 05:47:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:47:28,455 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:47:28,455 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:47:28,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,100 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:47:28,669 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:47:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:47:28,669 INFO L82 PathProgramCache]: Analyzing trace with hash -571422738, now seen corresponding path program 3 times [2021-04-15 05:47:28,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:47:28,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740228336] [2021-04-15 05:47:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:47:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:47:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:47:28,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740228336] [2021-04-15 05:47:28,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654617188] [2021-04-15 05:47:28,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:47:28,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 05:47:28,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:47:28,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:47:28,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:47:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:47:28,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:47:28,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-04-15 05:47:28,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104299525] [2021-04-15 05:47:28,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 05:47:28,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:47:28,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 05:47:28,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-04-15 05:47:28,788 INFO L87 Difference]: Start difference. First operand 265735 states and 1228736 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:47:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:47:33,386 INFO L93 Difference]: Finished difference Result 375985 states and 1718669 transitions. [2021-04-15 05:47:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-04-15 05:47:33,389 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:47:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:47:35,638 INFO L225 Difference]: With dead ends: 375985 [2021-04-15 05:47:35,638 INFO L226 Difference]: Without dead ends: 373740 [2021-04-15 05:47:35,638 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-04-15 05:47:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373740 states. [2021-04-15 05:47:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373740 to 251750. [2021-04-15 05:47:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251750 states, 251749 states have (on average 4.610206991884774) internal successors, (1160615), 251749 states have internal predecessors, (1160615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:47:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251750 states to 251750 states and 1160615 transitions. [2021-04-15 05:47:48,590 INFO L78 Accepts]: Start accepts. Automaton has 251750 states and 1160615 transitions. Word has length 27 [2021-04-15 05:47:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:47:48,590 INFO L480 AbstractCegarLoop]: Abstraction has 251750 states and 1160615 transitions. [2021-04-15 05:47:48,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:47:48,590 INFO L276 IsEmpty]: Start isEmpty. Operand 251750 states and 1160615 transitions. [2021-04-15 05:47:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:47:49,429 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:47:49,429 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:47:49,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:47:49,630 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:47:49,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:47:49,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1228632456, now seen corresponding path program 21 times [2021-04-15 05:47:49,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:47:49,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795164753] [2021-04-15 05:47:49,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:47:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:47:49,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:47:49,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795164753] [2021-04-15 05:47:49,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309039691] [2021-04-15 05:47:49,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:47:49,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-04-15 05:47:49,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:47:49,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:47:49,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:47:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:47:49,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:47:49,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-04-15 05:47:49,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182850850] [2021-04-15 05:47:49,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-15 05:47:49,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:47:49,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-15 05:47:49,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-04-15 05:47:49,777 INFO L87 Difference]: Start difference. First operand 251750 states and 1160615 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:47:53,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:47:53,870 INFO L93 Difference]: Finished difference Result 266361 states and 1221475 transitions. [2021-04-15 05:47:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-04-15 05:47:53,870 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:47:53,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:47:55,609 INFO L225 Difference]: With dead ends: 266361 [2021-04-15 05:47:55,609 INFO L226 Difference]: Without dead ends: 266295 [2021-04-15 05:47:55,609 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 198.0ms TimeCoverageRelationStatistics Valid=189, Invalid=411, Unknown=0, NotChecked=0, Total=600 [2021-04-15 05:47:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266295 states. [2021-04-15 05:48:04,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266295 to 251509. [2021-04-15 05:48:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251509 states, 251508 states have (on average 4.610636639788794) internal successors, (1159612), 251508 states have internal predecessors, (1159612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:48:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251509 states to 251509 states and 1159612 transitions. [2021-04-15 05:48:07,155 INFO L78 Accepts]: Start accepts. Automaton has 251509 states and 1159612 transitions. Word has length 27 [2021-04-15 05:48:07,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:48:07,155 INFO L480 AbstractCegarLoop]: Abstraction has 251509 states and 1159612 transitions. [2021-04-15 05:48:07,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:48:07,155 INFO L276 IsEmpty]: Start isEmpty. Operand 251509 states and 1159612 transitions. [2021-04-15 05:48:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:48:08,080 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:48:08,081 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:48:08,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,102 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:48:08,281 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:48:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:48:08,282 INFO L82 PathProgramCache]: Analyzing trace with hash 994714892, now seen corresponding path program 22 times [2021-04-15 05:48:08,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:48:08,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751485981] [2021-04-15 05:48:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:48:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:48:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:48:08,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751485981] [2021-04-15 05:48:08,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059030104] [2021-04-15 05:48:08,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:48:08,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:48:08,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:48:08,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 05:48:08,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:48:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:48:08,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:48:08,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-04-15 05:48:08,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768224243] [2021-04-15 05:48:08,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-04-15 05:48:08,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:48:08,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-04-15 05:48:08,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-04-15 05:48:08,428 INFO L87 Difference]: Start difference. First operand 251509 states and 1159612 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:48:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:48:12,548 INFO L93 Difference]: Finished difference Result 265127 states and 1216578 transitions. [2021-04-15 05:48:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-04-15 05:48:12,553 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:48:12,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:48:15,304 INFO L225 Difference]: With dead ends: 265127 [2021-04-15 05:48:15,304 INFO L226 Difference]: Without dead ends: 265036 [2021-04-15 05:48:15,304 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 237.3ms TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2021-04-15 05:48:15,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265036 states. [2021-04-15 05:48:23,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265036 to 251254. [2021-04-15 05:48:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251254 states, 251253 states have (on average 4.609640481904694) internal successors, (1158186), 251253 states have internal predecessors, (1158186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:48:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251254 states to 251254 states and 1158186 transitions. [2021-04-15 05:48:26,558 INFO L78 Accepts]: Start accepts. Automaton has 251254 states and 1158186 transitions. Word has length 27 [2021-04-15 05:48:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:48:26,558 INFO L480 AbstractCegarLoop]: Abstraction has 251254 states and 1158186 transitions. [2021-04-15 05:48:26,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:48:26,558 INFO L276 IsEmpty]: Start isEmpty. Operand 251254 states and 1158186 transitions. [2021-04-15 05:48:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:48:27,460 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:48:27,460 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:48:27,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:48:27,673 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:48:27,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:48:27,673 INFO L82 PathProgramCache]: Analyzing trace with hash -4179154, now seen corresponding path program 16 times [2021-04-15 05:48:27,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:48:27,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848962046] [2021-04-15 05:48:27,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:48:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:48:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:48:27,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848962046] [2021-04-15 05:48:27,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370655166] [2021-04-15 05:48:27,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:48:27,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-04-15 05:48:27,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:48:27,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-15 05:48:27,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:48:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:48:27,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:48:27,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-04-15 05:48:27,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824794801] [2021-04-15 05:48:27,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 05:48:27,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:48:27,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 05:48:27,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:48:27,796 INFO L87 Difference]: Start difference. First operand 251254 states and 1158186 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:48:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:48:31,298 INFO L93 Difference]: Finished difference Result 253117 states and 1165203 transitions. [2021-04-15 05:48:31,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 05:48:31,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:48:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:48:32,943 INFO L225 Difference]: With dead ends: 253117 [2021-04-15 05:48:32,943 INFO L226 Difference]: Without dead ends: 253008 [2021-04-15 05:48:32,943 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-04-15 05:48:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253008 states. [2021-04-15 05:48:40,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253008 to 251574. [2021-04-15 05:48:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251574 states, 251573 states have (on average 4.6087099967007585) internal successors, (1159427), 251573 states have internal predecessors, (1159427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:48:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251574 states to 251574 states and 1159427 transitions. [2021-04-15 05:48:44,020 INFO L78 Accepts]: Start accepts. Automaton has 251574 states and 1159427 transitions. Word has length 27 [2021-04-15 05:48:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:48:44,020 INFO L480 AbstractCegarLoop]: Abstraction has 251574 states and 1159427 transitions. [2021-04-15 05:48:44,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:48:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 251574 states and 1159427 transitions. [2021-04-15 05:48:44,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:48:44,917 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:48:44,917 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:48:45,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-04-15 05:48:45,118 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:48:45,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:48:45,118 INFO L82 PathProgramCache]: Analyzing trace with hash -633472846, now seen corresponding path program 17 times [2021-04-15 05:48:45,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:48:45,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843678140] [2021-04-15 05:48:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:48:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:48:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:48:45,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843678140] [2021-04-15 05:48:45,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188067967] [2021-04-15 05:48:45,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:48:45,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-04-15 05:48:45,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:48:45,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-04-15 05:48:45,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:48:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:48:45,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:48:45,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-04-15 05:48:45,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747211687] [2021-04-15 05:48:45,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 05:48:45,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:48:45,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 05:48:45,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-04-15 05:48:45,370 INFO L87 Difference]: Start difference. First operand 251574 states and 1159427 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) [2021-04-15 05:48:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:48:49,303 INFO L93 Difference]: Finished difference Result 267856 states and 1227050 transitions. [2021-04-15 05:48:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 05:48:49,304 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 27 [2021-04-15 05:48:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:48:50,962 INFO L225 Difference]: With dead ends: 267856 [2021-04-15 05:48:50,963 INFO L226 Difference]: Without dead ends: 267479 [2021-04-15 05:48:50,963 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 235.6ms TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2021-04-15 05:48:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267479 states. [2021-04-15 05:48:59,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267479 to 252083. [2021-04-15 05:48:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252083 states, 252082 states have (on average 4.6086789219380995) internal successors, (1161765), 252082 states have internal predecessors, (1161765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:49:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252083 states to 252083 states and 1161765 transitions. [2021-04-15 05:49:02,370 INFO L78 Accepts]: Start accepts. Automaton has 252083 states and 1161765 transitions. Word has length 27 [2021-04-15 05:49:02,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:49:02,370 INFO L480 AbstractCegarLoop]: Abstraction has 252083 states and 1161765 transitions. [2021-04-15 05:49:02,370 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) [2021-04-15 05:49:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 252083 states and 1161765 transitions. [2021-04-15 05:49:04,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:49:04,200 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:49:04,200 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:49:04,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-04-15 05:49:04,417 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:49:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:49:04,417 INFO L82 PathProgramCache]: Analyzing trace with hash -416444856, now seen corresponding path program 18 times [2021-04-15 05:49:04,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:49:04,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368983651] [2021-04-15 05:49:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:49:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:49:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:49:04,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368983651] [2021-04-15 05:49:04,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588058181] [2021-04-15 05:49:04,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:49:04,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-04-15 05:49:04,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:49:04,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-04-15 05:49:04,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:49:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:49:04,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:49:04,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-04-15 05:49:04,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435034979] [2021-04-15 05:49:04,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-15 05:49:04,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:49:04,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-15 05:49:04,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-04-15 05:49:04,636 INFO L87 Difference]: Start difference. First operand 252083 states and 1161765 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:49:07,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:49:07,292 INFO L93 Difference]: Finished difference Result 254371 states and 1170289 transitions. [2021-04-15 05:49:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 05:49:07,293 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:49:07,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:49:08,654 INFO L225 Difference]: With dead ends: 254371 [2021-04-15 05:49:08,654 INFO L226 Difference]: Without dead ends: 254257 [2021-04-15 05:49:08,655 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 158.2ms TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-04-15 05:49:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254257 states. [2021-04-15 05:49:17,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254257 to 251906. [2021-04-15 05:49:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251906 states, 251905 states have (on average 4.6087374208531) internal successors, (1160964), 251905 states have internal predecessors, (1160964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:49:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251906 states to 251906 states and 1160964 transitions. [2021-04-15 05:49:20,459 INFO L78 Accepts]: Start accepts. Automaton has 251906 states and 1160964 transitions. Word has length 27 [2021-04-15 05:49:20,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:49:20,459 INFO L480 AbstractCegarLoop]: Abstraction has 251906 states and 1160964 transitions. [2021-04-15 05:49:20,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:49:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 251906 states and 1160964 transitions. [2021-04-15 05:49:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:49:21,355 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:49:21,355 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:49:21,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:49:21,555 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:49:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:49:21,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1482095318, now seen corresponding path program 19 times [2021-04-15 05:49:21,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:49:21,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454937686] [2021-04-15 05:49:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:49:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:49:21,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:49:21,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454937686] [2021-04-15 05:49:21,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151674893] [2021-04-15 05:49:21,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:49:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:49:22,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-04-15 05:49:22,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:49:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:49:22,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:49:22,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-04-15 05:49:22,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461141112] [2021-04-15 05:49:22,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 05:49:22,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:49:22,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 05:49:22,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-04-15 05:49:22,692 INFO L87 Difference]: Start difference. First operand 251906 states and 1160964 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) [2021-04-15 05:49:26,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:49:26,553 INFO L93 Difference]: Finished difference Result 325692 states and 1489315 transitions. [2021-04-15 05:49:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-15 05:49:26,554 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 27 [2021-04-15 05:49:26,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:49:29,473 INFO L225 Difference]: With dead ends: 325692 [2021-04-15 05:49:29,474 INFO L226 Difference]: Without dead ends: 325314 [2021-04-15 05:49:29,474 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 414.7ms TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2021-04-15 05:49:29,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325314 states. [2021-04-15 05:49:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325314 to 256688. [2021-04-15 05:49:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256688 states, 256687 states have (on average 4.61244628672274) internal successors, (1183955), 256687 states have internal predecessors, (1183955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:49:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256688 states to 256688 states and 1183955 transitions. [2021-04-15 05:49:42,088 INFO L78 Accepts]: Start accepts. Automaton has 256688 states and 1183955 transitions. Word has length 27 [2021-04-15 05:49:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:49:42,089 INFO L480 AbstractCegarLoop]: Abstraction has 256688 states and 1183955 transitions. [2021-04-15 05:49:42,089 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) [2021-04-15 05:49:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 256688 states and 1183955 transitions. [2021-04-15 05:49:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-04-15 05:49:42,960 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:49:42,960 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:49:43,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:49:43,161 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:49:43,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:49:43,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1862249856, now seen corresponding path program 20 times [2021-04-15 05:49:43,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:49:43,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723351751] [2021-04-15 05:49:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:49:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:49:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:49:43,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723351751] [2021-04-15 05:49:43,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608888713] [2021-04-15 05:49:43,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:49:43,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 05:49:43,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 05:49:43,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-04-15 05:49:43,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 05:49:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:49:43,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 05:49:43,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-04-15 05:49:43,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792766366] [2021-04-15 05:49:43,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-04-15 05:49:43,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:49:43,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-04-15 05:49:43,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-04-15 05:49:43,429 INFO L87 Difference]: Start difference. First operand 256688 states and 1183955 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:49:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:49:47,673 INFO L93 Difference]: Finished difference Result 299739 states and 1374275 transitions. [2021-04-15 05:49:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-04-15 05:49:47,673 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-04-15 05:49:47,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:49:49,248 INFO L225 Difference]: With dead ends: 299739 [2021-04-15 05:49:49,249 INFO L226 Difference]: Without dead ends: 299526 [2021-04-15 05:49:49,249 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 248.0ms TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-04-15 05:49:50,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299526 states. Received shutdown request... [2021-04-15 05:49:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299526 to 257027. [2021-04-15 05:49:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257027 states, 257026 states have (on average 4.612817380342845) internal successors, (1185614), 257026 states have internal predecessors, (1185614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 05:49:59,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 05:49:59,385 WARN L545 AbstractCegarLoop]: Verification canceled [2021-04-15 05:49:59,389 WARN L224 ceAbstractionStarter]: Timeout [2021-04-15 05:49:59,390 INFO L202 PluginConnector]: Adding new model hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 05:49:59 BasicIcfg [2021-04-15 05:49:59,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 05:49:59,390 INFO L168 Benchmark]: Toolchain (without parser) took 636615.15 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 236.5 MB in the beginning and 9.4 GB in the end (delta: -9.1 GB). Peak memory consumption was 7.3 GB. Max. memory is 16.0 GB. [2021-04-15 05:49:59,391 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 05:49:59,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.42 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 05:49:59,391 INFO L168 Benchmark]: Boogie Preprocessor took 13.28 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 233.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 05:49:59,391 INFO L168 Benchmark]: RCFGBuilder took 242.06 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 236.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-04-15 05:49:59,391 INFO L168 Benchmark]: TraceAbstraction took 636333.18 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 236.3 MB in the beginning and 9.4 GB in the end (delta: -9.1 GB). Peak memory consumption was 7.3 GB. Max. memory is 16.0 GB. [2021-04-15 05:49:59,391 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 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.42 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.28 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 233.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 242.06 ms. Allocated memory is still 255.9 MB. Free memory was 233.8 MB in the beginning and 236.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 636333.18 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 236.3 MB in the beginning and 9.4 GB in the end (delta: -9.1 GB). Peak memory consumption was 7.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 72). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 636244.3ms, OverallIterations: 115, TraceHistogramMax: 3, EmptinessCheckTime: 36515.4ms, AutomataDifference: 193400.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 139.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6040 SDtfs, 12144 SDslu, 21969 SDs, 0 SdLazy, 23646 SolverSat, 3540 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11846.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3684 GetRequests, 2291 SyntacticMatches, 223 SemanticMatches, 1170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4057 ImplicationChecksByTransitivity, 12222.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=265735occurred in iteration=107, InterpolantAutomatonStates: 1236, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 362654.7ms AutomataMinimizationTime, 115 MinimizatonAttempts, 951302 StatesRemovedByMinimization, 114 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 436.4ms SsaConstructionTime, 1481.5ms SatisfiabilityAnalysisTime, 15974.7ms InterpolantComputationTime, 5506 NumberOfCodeBlocks, 5501 NumberOfCodeBlocksAsserted, 326 NumberOfCheckSat, 5284 ConstructedInterpolants, 0 QuantifiedInterpolants, 24934 SizeOfPredicates, 121 NumberOfNonLiveVariables, 7559 ConjunctsInSsa, 1104 ConjunctsInUnsatCore, 222 InterpolantComputations, 10 PerfectInterpolantSequences, 237/906 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