/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 22:18:16,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 22:18:16,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 22:18:16,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 22:18:16,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 22:18:16,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 22:18:16,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 22:18:16,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 22:18:16,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 22:18:16,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 22:18:16,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 22:18:16,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 22:18:16,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 22:18:16,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 22:18:16,960 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 22:18:16,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 22:18:16,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 22:18:16,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 22:18:16,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 22:18:16,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 22:18:16,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 22:18:16,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 22:18:16,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 22:18:16,962 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 22:18:16,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 22:18:16,962 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 22:18:16,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 22:18:16,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 22:18:16,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 22:18:16,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 22:18:16,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 22:18:16,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 22:18:16,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 22:18:16,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 22:18:16,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 22:18:16,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 22:18:16,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 22:18:16,964 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 22:18:16,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 22:18:16,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 22:18:17,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 22:18:17,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 22:18:17,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 22:18:17,288 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-10 22:18:17,289 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-10 22:18:17,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl [2021-03-10 22:18:17,290 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl' [2021-03-10 22:18:17,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 22:18:17,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-10 22:18:17,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 22:18:17,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 22:18:17,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 22:18:17,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/1) ... [2021-03-10 22:18:17,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/1) ... [2021-03-10 22:18:17,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 22:18:17,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 22:18:17,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 22:18:17,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 22:18:17,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/1) ... [2021-03-10 22:18:17,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/1) ... [2021-03-10 22:18:17,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/1) ... [2021-03-10 22:18:17,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/1) ... [2021-03-10 22:18:17,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/1) ... [2021-03-10 22:18:17,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/1) ... [2021-03-10 22:18:17,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/1) ... [2021-03-10 22:18:17,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 22:18:17,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 22:18:17,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 22:18:17,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 22:18:17,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 22:18:17,497 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-10 22:18:17,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-10 22:18:17,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-10 22:18:17,497 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-10 22:18:17,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-10 22:18:17,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-10 22:18:17,497 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-10 22:18:17,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 22:18:17,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 22:18:17,498 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-10 22:18:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-10 22:18:17,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-10 22:18:17,498 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-10 22:18:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-10 22:18:17,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-10 22:18:17,499 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 22:18:17,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 22:18:17,841 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-10 22:18:17,842 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:18:17 BoogieIcfgContainer [2021-03-10 22:18:17,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 22:18:17,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 22:18:17,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 22:18:17,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 22:18:17,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.03 10:18:17" (1/2) ... [2021-03-10 22:18:17,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c70d4e5 and model type bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 10:18:17, skipping insertion in model container [2021-03-10 22:18:17,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 10:18:17" (2/2) ... [2021-03-10 22:18:17,856 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-4.wvr.bpl [2021-03-10 22:18:17,861 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 22:18:17,861 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 22:18:17,864 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 22:18:17,864 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 22:18:17,967 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-10 22:18:17,981 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-10 22:18:17,996 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 22:18:17,996 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 22:18:17,996 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 22:18:17,996 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 22:18:17,996 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 22:18:17,996 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 22:18:17,996 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 22:18:17,996 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 22:18:18,006 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 81 transitions, 194 flow [2021-03-10 22:18:34,151 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 93966 states, 93964 states have (on average 3.7646439061768335) internal successors, (353741), 93965 states have internal predecessors, (353741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 93966 states, 93964 states have (on average 3.7646439061768335) internal successors, (353741), 93965 states have internal predecessors, (353741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:18:34,939 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:34,940 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:34,941 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:34,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:34,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1096141821, now seen corresponding path program 1 times [2021-03-10 22:18:34,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:34,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402092623] [2021-03-10 22:18:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:35,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402092623] [2021-03-10 22:18:35,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:35,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 22:18:35,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653963158] [2021-03-10 22:18:35,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 22:18:35,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:35,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 22:18:35,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:18:35,284 INFO L87 Difference]: Start difference. First operand has 93966 states, 93964 states have (on average 3.7646439061768335) internal successors, (353741), 93965 states have internal predecessors, (353741), 0 states have call successors, (0), 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 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:36,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:36,400 INFO L93 Difference]: Finished difference Result 93964 states and 349229 transitions. [2021-03-10 22:18:36,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 22:18:36,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:18:36,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:37,129 INFO L225 Difference]: With dead ends: 93964 [2021-03-10 22:18:37,129 INFO L226 Difference]: Without dead ends: 93964 [2021-03-10 22:18:37,130 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:18:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-03-10 22:18:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2021-03-10 22:18:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93964 states, 93963 states have (on average 3.7166650702936264) internal successors, (349229), 93963 states have internal predecessors, (349229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 349229 transitions. [2021-03-10 22:18:48,862 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 349229 transitions. Word has length 75 [2021-03-10 22:18:48,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:18:48,863 INFO L480 AbstractCegarLoop]: Abstraction has 93964 states and 349229 transitions. [2021-03-10 22:18:48,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:48,863 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 349229 transitions. [2021-03-10 22:18:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:18:49,154 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:18:49,154 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:18:49,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 22:18:49,155 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:18:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:18:49,156 INFO L82 PathProgramCache]: Analyzing trace with hash 493735869, now seen corresponding path program 2 times [2021-03-10 22:18:49,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:18:49,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829575467] [2021-03-10 22:18:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:18:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:18:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:18:49,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829575467] [2021-03-10 22:18:49,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:18:49,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 22:18:49,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226282121] [2021-03-10 22:18:49,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 22:18:49,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:18:49,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 22:18:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:18:49,228 INFO L87 Difference]: Start difference. First operand 93964 states and 349229 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:18:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:18:50,015 INFO L93 Difference]: Finished difference Result 93964 states and 344719 transitions. [2021-03-10 22:18:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 22:18:50,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:18:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:18:50,319 INFO L225 Difference]: With dead ends: 93964 [2021-03-10 22:18:50,319 INFO L226 Difference]: Without dead ends: 93964 [2021-03-10 22:18:50,321 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:18:59,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-03-10 22:19:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2021-03-10 22:19:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93964 states, 93963 states have (on average 3.6686674542107) internal successors, (344719), 93963 states have internal predecessors, (344719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 344719 transitions. [2021-03-10 22:19:01,324 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 344719 transitions. Word has length 75 [2021-03-10 22:19:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:01,326 INFO L480 AbstractCegarLoop]: Abstraction has 93964 states and 344719 transitions. [2021-03-10 22:19:01,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 344719 transitions. [2021-03-10 22:19:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:19:01,521 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:01,522 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:01,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 22:19:01,522 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:19:01,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:01,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2131980333, now seen corresponding path program 3 times [2021-03-10 22:19:01,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:01,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728033023] [2021-03-10 22:19:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:02,077 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2021-03-10 22:19:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:02,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728033023] [2021-03-10 22:19:02,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:02,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:19:02,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986101417] [2021-03-10 22:19:02,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:19:02,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:02,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:19:02,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:19:02,183 INFO L87 Difference]: Start difference. First operand 93964 states and 344719 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:04,030 INFO L93 Difference]: Finished difference Result 133848 states and 493895 transitions. [2021-03-10 22:19:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 22:19:04,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:19:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:04,773 INFO L225 Difference]: With dead ends: 133848 [2021-03-10 22:19:04,774 INFO L226 Difference]: Without dead ends: 133848 [2021-03-10 22:19:04,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 455.1ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:19:16,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133848 states. [2021-03-10 22:19:18,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133848 to 100718. [2021-03-10 22:19:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100718 states, 100717 states have (on average 3.6551624849826743) internal successors, (368137), 100717 states have internal predecessors, (368137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100718 states to 100718 states and 368137 transitions. [2021-03-10 22:19:18,823 INFO L78 Accepts]: Start accepts. Automaton has 100718 states and 368137 transitions. Word has length 75 [2021-03-10 22:19:18,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:18,824 INFO L480 AbstractCegarLoop]: Abstraction has 100718 states and 368137 transitions. [2021-03-10 22:19:18,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:18,824 INFO L276 IsEmpty]: Start isEmpty. Operand 100718 states and 368137 transitions. [2021-03-10 22:19:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:19:19,633 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:19,634 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:19,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 22:19:19,634 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:19:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:19,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1590701179, now seen corresponding path program 4 times [2021-03-10 22:19:19,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:19,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838894315] [2021-03-10 22:19:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:19,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838894315] [2021-03-10 22:19:19,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:19,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:19:19,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446678806] [2021-03-10 22:19:19,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:19:19,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:19,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:19:19,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:19:19,936 INFO L87 Difference]: Start difference. First operand 100718 states and 368137 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:22,549 INFO L93 Difference]: Finished difference Result 264065 states and 978883 transitions. [2021-03-10 22:19:22,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:19:22,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:19:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:23,441 INFO L225 Difference]: With dead ends: 264065 [2021-03-10 22:19:23,441 INFO L226 Difference]: Without dead ends: 264065 [2021-03-10 22:19:23,442 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 310.5ms TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:19:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264065 states. [2021-03-10 22:19:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264065 to 125393. [2021-03-10 22:19:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125393 states, 125392 states have (on average 3.6497065203521757) internal successors, (457644), 125392 states have internal predecessors, (457644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125393 states to 125393 states and 457644 transitions. [2021-03-10 22:19:42,240 INFO L78 Accepts]: Start accepts. Automaton has 125393 states and 457644 transitions. Word has length 75 [2021-03-10 22:19:42,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:42,248 INFO L480 AbstractCegarLoop]: Abstraction has 125393 states and 457644 transitions. [2021-03-10 22:19:42,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 125393 states and 457644 transitions. [2021-03-10 22:19:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:19:42,604 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:42,604 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:42,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 22:19:42,604 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:19:42,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:42,605 INFO L82 PathProgramCache]: Analyzing trace with hash 636742047, now seen corresponding path program 5 times [2021-03-10 22:19:42,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:42,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587559321] [2021-03-10 22:19:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:42,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587559321] [2021-03-10 22:19:42,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:42,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:19:42,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202964248] [2021-03-10 22:19:42,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:19:42,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:42,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:19:42,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:19:42,731 INFO L87 Difference]: Start difference. First operand 125393 states and 457644 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:19:44,310 INFO L93 Difference]: Finished difference Result 156458 states and 559380 transitions. [2021-03-10 22:19:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:19:44,310 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:19:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:19:44,793 INFO L225 Difference]: With dead ends: 156458 [2021-03-10 22:19:44,793 INFO L226 Difference]: Without dead ends: 154892 [2021-03-10 22:19:44,793 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 217.2ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-03-10 22:19:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154892 states. [2021-03-10 22:19:57,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154892 to 128749. [2021-03-10 22:19:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128749 states, 128748 states have (on average 3.640087613011464) internal successors, (468654), 128748 states have internal predecessors, (468654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:58,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128749 states to 128749 states and 468654 transitions. [2021-03-10 22:19:58,994 INFO L78 Accepts]: Start accepts. Automaton has 128749 states and 468654 transitions. Word has length 75 [2021-03-10 22:19:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:19:58,995 INFO L480 AbstractCegarLoop]: Abstraction has 128749 states and 468654 transitions. [2021-03-10 22:19:58,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:19:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 128749 states and 468654 transitions. [2021-03-10 22:19:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:19:59,224 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:19:59,224 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:19:59,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 22:19:59,224 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:19:59,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:19:59,225 INFO L82 PathProgramCache]: Analyzing trace with hash 921794193, now seen corresponding path program 6 times [2021-03-10 22:19:59,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:19:59,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479610229] [2021-03-10 22:19:59,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:19:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:19:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:19:59,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479610229] [2021-03-10 22:19:59,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:19:59,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 22:19:59,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407190547] [2021-03-10 22:19:59,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 22:19:59,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:19:59,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 22:19:59,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:19:59,251 INFO L87 Difference]: Start difference. First operand 128749 states and 468654 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:00,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:00,478 INFO L93 Difference]: Finished difference Result 128072 states and 460157 transitions. [2021-03-10 22:20:00,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 22:20:00,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:20:00,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:00,997 INFO L225 Difference]: With dead ends: 128072 [2021-03-10 22:20:00,998 INFO L226 Difference]: Without dead ends: 127994 [2021-03-10 22:20:00,998 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 22:20:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127994 states. [2021-03-10 22:20:13,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127994 to 127994. [2021-03-10 22:20:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127994 states, 127993 states have (on average 3.5935793363699577) internal successors, (459953), 127993 states have internal predecessors, (459953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127994 states to 127994 states and 459953 transitions. [2021-03-10 22:20:14,332 INFO L78 Accepts]: Start accepts. Automaton has 127994 states and 459953 transitions. Word has length 75 [2021-03-10 22:20:14,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:14,332 INFO L480 AbstractCegarLoop]: Abstraction has 127994 states and 459953 transitions. [2021-03-10 22:20:14,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:14,332 INFO L276 IsEmpty]: Start isEmpty. Operand 127994 states and 459953 transitions. [2021-03-10 22:20:15,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:20:15,321 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:15,321 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:15,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 22:20:15,326 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:15,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:15,327 INFO L82 PathProgramCache]: Analyzing trace with hash -422526309, now seen corresponding path program 7 times [2021-03-10 22:20:15,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:15,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444532892] [2021-03-10 22:20:15,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:15,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444532892] [2021-03-10 22:20:15,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:15,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:20:15,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501274042] [2021-03-10 22:20:15,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:20:15,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:15,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:20:15,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:20:15,626 INFO L87 Difference]: Start difference. First operand 127994 states and 459953 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:18,166 INFO L93 Difference]: Finished difference Result 329223 states and 1200292 transitions. [2021-03-10 22:20:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:20:18,166 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:20:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:19,777 INFO L225 Difference]: With dead ends: 329223 [2021-03-10 22:20:19,778 INFO L226 Difference]: Without dead ends: 328365 [2021-03-10 22:20:19,778 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 301.3ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-03-10 22:20:36,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328365 states. [2021-03-10 22:20:39,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328365 to 129973. [2021-03-10 22:20:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129973 states, 129972 states have (on average 3.5921429230911275) internal successors, (466878), 129972 states have internal predecessors, (466878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129973 states to 129973 states and 466878 transitions. [2021-03-10 22:20:40,514 INFO L78 Accepts]: Start accepts. Automaton has 129973 states and 466878 transitions. Word has length 75 [2021-03-10 22:20:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:20:40,515 INFO L480 AbstractCegarLoop]: Abstraction has 129973 states and 466878 transitions. [2021-03-10 22:20:40,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 129973 states and 466878 transitions. [2021-03-10 22:20:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:20:40,759 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:20:40,759 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:20:40,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 22:20:40,759 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:20:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:20:40,759 INFO L82 PathProgramCache]: Analyzing trace with hash 524082109, now seen corresponding path program 8 times [2021-03-10 22:20:40,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:20:40,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866454399] [2021-03-10 22:20:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:20:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:20:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:20:40,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866454399] [2021-03-10 22:20:40,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:20:40,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-10 22:20:40,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246242300] [2021-03-10 22:20:40,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 22:20:40,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:20:40,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 22:20:40,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-03-10 22:20:40,926 INFO L87 Difference]: Start difference. First operand 129973 states and 466878 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:20:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:20:43,818 INFO L93 Difference]: Finished difference Result 297673 states and 1077439 transitions. [2021-03-10 22:20:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:20:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:20:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:20:44,661 INFO L225 Difference]: With dead ends: 297673 [2021-03-10 22:20:44,661 INFO L226 Difference]: Without dead ends: 297361 [2021-03-10 22:20:44,662 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 173.2ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-03-10 22:21:01,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297361 states. [2021-03-10 22:21:04,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297361 to 148258. [2021-03-10 22:21:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148258 states, 148257 states have (on average 3.600659665310913) internal successors, (533823), 148257 states have internal predecessors, (533823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148258 states to 148258 states and 533823 transitions. [2021-03-10 22:21:05,710 INFO L78 Accepts]: Start accepts. Automaton has 148258 states and 533823 transitions. Word has length 75 [2021-03-10 22:21:05,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:05,711 INFO L480 AbstractCegarLoop]: Abstraction has 148258 states and 533823 transitions. [2021-03-10 22:21:05,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:05,711 INFO L276 IsEmpty]: Start isEmpty. Operand 148258 states and 533823 transitions. [2021-03-10 22:21:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:21:06,132 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:06,133 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:06,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 22:21:06,133 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:21:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:06,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1424559517, now seen corresponding path program 9 times [2021-03-10 22:21:06,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:06,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008273199] [2021-03-10 22:21:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:06,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008273199] [2021-03-10 22:21:06,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:06,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-10 22:21:06,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301052642] [2021-03-10 22:21:06,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 22:21:06,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:06,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 22:21:06,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:21:06,550 INFO L87 Difference]: Start difference. First operand 148258 states and 533823 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:08,698 INFO L93 Difference]: Finished difference Result 242649 states and 873644 transitions. [2021-03-10 22:21:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:21:08,699 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:21:08,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:09,391 INFO L225 Difference]: With dead ends: 242649 [2021-03-10 22:21:09,391 INFO L226 Difference]: Without dead ends: 242649 [2021-03-10 22:21:09,392 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 283.9ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:21:23,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242649 states. [2021-03-10 22:21:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242649 to 172059. [2021-03-10 22:21:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172059 states, 172058 states have (on average 3.596095502679329) internal successors, (618737), 172058 states have internal predecessors, (618737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172059 states to 172059 states and 618737 transitions. [2021-03-10 22:21:28,143 INFO L78 Accepts]: Start accepts. Automaton has 172059 states and 618737 transitions. Word has length 75 [2021-03-10 22:21:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:28,143 INFO L480 AbstractCegarLoop]: Abstraction has 172059 states and 618737 transitions. [2021-03-10 22:21:28,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 172059 states and 618737 transitions. [2021-03-10 22:21:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:21:28,509 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:28,509 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:28,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 22:21:28,509 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:21:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:28,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1618909409, now seen corresponding path program 10 times [2021-03-10 22:21:28,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:28,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403687034] [2021-03-10 22:21:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:28,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403687034] [2021-03-10 22:21:28,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:28,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-10 22:21:28,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456132107] [2021-03-10 22:21:28,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 22:21:28,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:28,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 22:21:28,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-03-10 22:21:28,652 INFO L87 Difference]: Start difference. First operand 172059 states and 618737 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:30,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:30,566 INFO L93 Difference]: Finished difference Result 205023 states and 726098 transitions. [2021-03-10 22:21:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:21:30,567 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:21:30,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:31,147 INFO L225 Difference]: With dead ends: 205023 [2021-03-10 22:21:31,147 INFO L226 Difference]: Without dead ends: 203444 [2021-03-10 22:21:31,147 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 197.6ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-03-10 22:21:43,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203444 states. [2021-03-10 22:21:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203444 to 172347. [2021-03-10 22:21:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172347 states, 172346 states have (on average 3.594043377856173) internal successors, (619419), 172346 states have internal predecessors, (619419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172347 states to 172347 states and 619419 transitions. [2021-03-10 22:21:47,883 INFO L78 Accepts]: Start accepts. Automaton has 172347 states and 619419 transitions. Word has length 75 [2021-03-10 22:21:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:21:47,883 INFO L480 AbstractCegarLoop]: Abstraction has 172347 states and 619419 transitions. [2021-03-10 22:21:47,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 172347 states and 619419 transitions. [2021-03-10 22:21:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:21:48,281 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:21:48,281 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:21:48,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 22:21:48,281 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:21:48,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:21:48,282 INFO L82 PathProgramCache]: Analyzing trace with hash -385631589, now seen corresponding path program 11 times [2021-03-10 22:21:48,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:21:48,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748940233] [2021-03-10 22:21:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:21:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:21:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:21:48,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748940233] [2021-03-10 22:21:48,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:21:48,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:21:48,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267251379] [2021-03-10 22:21:48,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:21:48,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:21:48,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:21:48,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:21:48,409 INFO L87 Difference]: Start difference. First operand 172347 states and 619419 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:21:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:21:52,047 INFO L93 Difference]: Finished difference Result 478676 states and 1726849 transitions. [2021-03-10 22:21:52,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:21:52,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:21:52,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:21:54,368 INFO L225 Difference]: With dead ends: 478676 [2021-03-10 22:21:54,368 INFO L226 Difference]: Without dead ends: 476998 [2021-03-10 22:21:54,368 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:22:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476998 states. [2021-03-10 22:22:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476998 to 174556. [2021-03-10 22:22:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174556 states, 174555 states have (on average 3.5929706969150126) internal successors, (627171), 174555 states have internal predecessors, (627171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174556 states to 174556 states and 627171 transitions. [2021-03-10 22:22:21,378 INFO L78 Accepts]: Start accepts. Automaton has 174556 states and 627171 transitions. Word has length 75 [2021-03-10 22:22:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:22:21,378 INFO L480 AbstractCegarLoop]: Abstraction has 174556 states and 627171 transitions. [2021-03-10 22:22:21,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 174556 states and 627171 transitions. [2021-03-10 22:22:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:22:21,793 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:22:21,793 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:22:21,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-10 22:22:21,793 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:22:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:22:21,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1896108219, now seen corresponding path program 12 times [2021-03-10 22:22:21,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:22:21,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827397504] [2021-03-10 22:22:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:22:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:22:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:22:21,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827397504] [2021-03-10 22:22:21,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:22:21,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 22:22:21,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065196338] [2021-03-10 22:22:21,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 22:22:21,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:22:21,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 22:22:21,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-10 22:22:21,903 INFO L87 Difference]: Start difference. First operand 174556 states and 627171 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:22:26,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:22:26,517 INFO L93 Difference]: Finished difference Result 573904 states and 2072067 transitions. [2021-03-10 22:22:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-10 22:22:26,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:22:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:22:30,478 INFO L225 Difference]: With dead ends: 573904 [2021-03-10 22:22:30,478 INFO L226 Difference]: Without dead ends: 571249 [2021-03-10 22:22:30,479 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 122.6ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:22:53,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571249 states. [2021-03-10 22:22:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571249 to 190238. [2021-03-10 22:22:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190238 states, 190237 states have (on average 3.5976282216393236) internal successors, (684402), 190237 states have internal predecessors, (684402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190238 states to 190238 states and 684402 transitions. [2021-03-10 22:23:01,737 INFO L78 Accepts]: Start accepts. Automaton has 190238 states and 684402 transitions. Word has length 75 [2021-03-10 22:23:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:01,737 INFO L480 AbstractCegarLoop]: Abstraction has 190238 states and 684402 transitions. [2021-03-10 22:23:01,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 190238 states and 684402 transitions. [2021-03-10 22:23:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:23:02,207 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:02,207 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:23:02,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-10 22:23:02,208 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:23:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:02,208 INFO L82 PathProgramCache]: Analyzing trace with hash -436160609, now seen corresponding path program 13 times [2021-03-10 22:23:02,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:02,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129980812] [2021-03-10 22:23:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:02,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129980812] [2021-03-10 22:23:02,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:02,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:23:02,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906475290] [2021-03-10 22:23:02,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:23:02,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:02,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:23:02,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:23:02,296 INFO L87 Difference]: Start difference. First operand 190238 states and 684402 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:04,929 INFO L93 Difference]: Finished difference Result 308878 states and 1099952 transitions. [2021-03-10 22:23:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 22:23:04,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:23:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:06,640 INFO L225 Difference]: With dead ends: 308878 [2021-03-10 22:23:06,640 INFO L226 Difference]: Without dead ends: 306163 [2021-03-10 22:23:06,641 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-03-10 22:23:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306163 states. [2021-03-10 22:23:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306163 to 172899. [2021-03-10 22:23:25,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172899 states, 172898 states have (on average 3.5955013938854123) internal successors, (621655), 172898 states have internal predecessors, (621655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172899 states to 172899 states and 621655 transitions. [2021-03-10 22:23:27,128 INFO L78 Accepts]: Start accepts. Automaton has 172899 states and 621655 transitions. Word has length 75 [2021-03-10 22:23:27,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:23:27,128 INFO L480 AbstractCegarLoop]: Abstraction has 172899 states and 621655 transitions. [2021-03-10 22:23:27,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 172899 states and 621655 transitions. [2021-03-10 22:23:27,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:23:27,571 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:23:27,571 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:23:27,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-10 22:23:27,571 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:23:27,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:23:27,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1369096197, now seen corresponding path program 14 times [2021-03-10 22:23:27,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:23:27,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301866743] [2021-03-10 22:23:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:23:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:23:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:23:27,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301866743] [2021-03-10 22:23:27,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:23:27,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 22:23:27,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759107638] [2021-03-10 22:23:27,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 22:23:27,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:23:27,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 22:23:27,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-10 22:23:27,676 INFO L87 Difference]: Start difference. First operand 172899 states and 621655 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:23:32,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:23:32,810 INFO L93 Difference]: Finished difference Result 532852 states and 1914860 transitions. [2021-03-10 22:23:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 22:23:32,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:23:32,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:23:34,940 INFO L225 Difference]: With dead ends: 532852 [2021-03-10 22:23:34,940 INFO L226 Difference]: Without dead ends: 530454 [2021-03-10 22:23:34,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 144.0ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-03-10 22:23:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530454 states. [2021-03-10 22:24:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530454 to 174842. [2021-03-10 22:24:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174842 states, 174841 states have (on average 3.5959757722730936) internal successors, (628724), 174841 states have internal predecessors, (628724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174842 states to 174842 states and 628724 transitions. [2021-03-10 22:24:04,828 INFO L78 Accepts]: Start accepts. Automaton has 174842 states and 628724 transitions. Word has length 75 [2021-03-10 22:24:04,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:04,828 INFO L480 AbstractCegarLoop]: Abstraction has 174842 states and 628724 transitions. [2021-03-10 22:24:04,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 174842 states and 628724 transitions. [2021-03-10 22:24:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:24:05,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:05,269 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:24:05,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-10 22:24:05,269 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:24:05,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:05,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1680953119, now seen corresponding path program 15 times [2021-03-10 22:24:05,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:05,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343552221] [2021-03-10 22:24:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:24:05,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343552221] [2021-03-10 22:24:05,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:05,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-10 22:24:05,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194211091] [2021-03-10 22:24:05,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 22:24:05,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:05,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 22:24:05,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-03-10 22:24:05,483 INFO L87 Difference]: Start difference. First operand 174842 states and 628724 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:10,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:10,964 INFO L93 Difference]: Finished difference Result 472107 states and 1699491 transitions. [2021-03-10 22:24:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 22:24:10,965 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:24:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:14,645 INFO L225 Difference]: With dead ends: 472107 [2021-03-10 22:24:14,645 INFO L226 Difference]: Without dead ends: 470016 [2021-03-10 22:24:14,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 443.2ms TimeCoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2021-03-10 22:24:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470016 states. [2021-03-10 22:24:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470016 to 178771. [2021-03-10 22:24:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178771 states, 178770 states have (on average 3.5964759187783186) internal successors, (642942), 178770 states have internal predecessors, (642942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178771 states to 178771 states and 642942 transitions. [2021-03-10 22:24:41,685 INFO L78 Accepts]: Start accepts. Automaton has 178771 states and 642942 transitions. Word has length 75 [2021-03-10 22:24:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:24:41,686 INFO L480 AbstractCegarLoop]: Abstraction has 178771 states and 642942 transitions. [2021-03-10 22:24:41,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 178771 states and 642942 transitions. [2021-03-10 22:24:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:24:42,213 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:24:42,214 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:24:42,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-10 22:24:42,214 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:24:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:24:42,215 INFO L82 PathProgramCache]: Analyzing trace with hash -219508739, now seen corresponding path program 16 times [2021-03-10 22:24:42,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:24:42,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487476709] [2021-03-10 22:24:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:24:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:24:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:24:42,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487476709] [2021-03-10 22:24:42,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:24:42,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-10 22:24:42,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362473057] [2021-03-10 22:24:42,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 22:24:42,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:24:42,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 22:24:42,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-03-10 22:24:42,443 INFO L87 Difference]: Start difference. First operand 178771 states and 642942 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:24:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:24:46,473 INFO L93 Difference]: Finished difference Result 354543 states and 1274075 transitions. [2021-03-10 22:24:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 22:24:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:24:46,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:24:47,822 INFO L225 Difference]: With dead ends: 354543 [2021-03-10 22:24:47,822 INFO L226 Difference]: Without dead ends: 352346 [2021-03-10 22:24:47,822 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 256.3ms TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-03-10 22:25:03,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352346 states. [2021-03-10 22:25:08,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352346 to 182914. [2021-03-10 22:25:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182914 states, 182913 states have (on average 3.602248063286918) internal successors, (658898), 182913 states have internal predecessors, (658898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182914 states to 182914 states and 658898 transitions. [2021-03-10 22:25:10,098 INFO L78 Accepts]: Start accepts. Automaton has 182914 states and 658898 transitions. Word has length 75 [2021-03-10 22:25:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:25:10,098 INFO L480 AbstractCegarLoop]: Abstraction has 182914 states and 658898 transitions. [2021-03-10 22:25:10,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 182914 states and 658898 transitions. [2021-03-10 22:25:10,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:25:10,559 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:25:10,559 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:25:10,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-10 22:25:10,559 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:25:10,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:25:10,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1310378019, now seen corresponding path program 17 times [2021-03-10 22:25:10,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:25:10,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876551349] [2021-03-10 22:25:10,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:25:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:25:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:25:10,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876551349] [2021-03-10 22:25:10,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:25:10,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-10 22:25:10,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662566567] [2021-03-10 22:25:10,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 22:25:10,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:25:10,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 22:25:10,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:25:10,785 INFO L87 Difference]: Start difference. First operand 182914 states and 658898 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:25:15,434 INFO L93 Difference]: Finished difference Result 316118 states and 1131261 transitions. [2021-03-10 22:25:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 22:25:15,435 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:25:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:25:17,361 INFO L225 Difference]: With dead ends: 316118 [2021-03-10 22:25:17,362 INFO L226 Difference]: Without dead ends: 314889 [2021-03-10 22:25:17,362 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 590.8ms TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 22:25:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314889 states. [2021-03-10 22:25:38,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314889 to 196723. [2021-03-10 22:25:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196723 states, 196722 states have (on average 3.594046420837527) internal successors, (707028), 196722 states have internal predecessors, (707028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196723 states to 196723 states and 707028 transitions. [2021-03-10 22:25:40,722 INFO L78 Accepts]: Start accepts. Automaton has 196723 states and 707028 transitions. Word has length 75 [2021-03-10 22:25:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:25:40,727 INFO L480 AbstractCegarLoop]: Abstraction has 196723 states and 707028 transitions. [2021-03-10 22:25:40,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:40,727 INFO L276 IsEmpty]: Start isEmpty. Operand 196723 states and 707028 transitions. [2021-03-10 22:25:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:25:41,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:25:41,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:25:41,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-10 22:25:41,284 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:25:41,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:25:41,284 INFO L82 PathProgramCache]: Analyzing trace with hash 971361789, now seen corresponding path program 18 times [2021-03-10 22:25:41,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:25:41,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512325087] [2021-03-10 22:25:41,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:25:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:25:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:25:41,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512325087] [2021-03-10 22:25:41,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:25:41,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-10 22:25:41,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127541658] [2021-03-10 22:25:41,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 22:25:41,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:25:41,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 22:25:41,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:25:41,509 INFO L87 Difference]: Start difference. First operand 196723 states and 707028 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:25:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:25:45,906 INFO L93 Difference]: Finished difference Result 321237 states and 1148161 transitions. [2021-03-10 22:25:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 22:25:45,906 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:25:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:25:47,053 INFO L225 Difference]: With dead ends: 321237 [2021-03-10 22:25:47,054 INFO L226 Difference]: Without dead ends: 319955 [2021-03-10 22:25:47,054 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 569.9ms TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 22:26:03,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319955 states. [2021-03-10 22:26:07,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319955 to 198208. [2021-03-10 22:26:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198208 states, 198207 states have (on average 3.59258250213161) internal successors, (712075), 198207 states have internal predecessors, (712075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198208 states to 198208 states and 712075 transitions. [2021-03-10 22:26:10,254 INFO L78 Accepts]: Start accepts. Automaton has 198208 states and 712075 transitions. Word has length 75 [2021-03-10 22:26:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:26:10,254 INFO L480 AbstractCegarLoop]: Abstraction has 198208 states and 712075 transitions. [2021-03-10 22:26:10,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 198208 states and 712075 transitions. [2021-03-10 22:26:11,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:26:11,232 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:26:11,232 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:26:11,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-10 22:26:11,233 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:26:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:26:11,233 INFO L82 PathProgramCache]: Analyzing trace with hash -926892579, now seen corresponding path program 19 times [2021-03-10 22:26:11,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:26:11,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468337128] [2021-03-10 22:26:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:26:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:26:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:26:11,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468337128] [2021-03-10 22:26:11,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:26:11,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-10 22:26:11,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489868763] [2021-03-10 22:26:11,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 22:26:11,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:26:11,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 22:26:11,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:26:11,524 INFO L87 Difference]: Start difference. First operand 198208 states and 712075 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:26:15,181 INFO L93 Difference]: Finished difference Result 277646 states and 985121 transitions. [2021-03-10 22:26:15,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 22:26:15,181 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:26:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:26:17,235 INFO L225 Difference]: With dead ends: 277646 [2021-03-10 22:26:17,235 INFO L226 Difference]: Without dead ends: 275840 [2021-03-10 22:26:17,236 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 340.5ms TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-03-10 22:26:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275840 states. [2021-03-10 22:26:36,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275840 to 224459. [2021-03-10 22:26:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224459 states, 224458 states have (on average 3.5716704238654895) internal successors, (801690), 224458 states have internal predecessors, (801690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224459 states to 224459 states and 801690 transitions. [2021-03-10 22:26:37,518 INFO L78 Accepts]: Start accepts. Automaton has 224459 states and 801690 transitions. Word has length 75 [2021-03-10 22:26:37,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:26:37,518 INFO L480 AbstractCegarLoop]: Abstraction has 224459 states and 801690 transitions. [2021-03-10 22:26:37,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 224459 states and 801690 transitions. [2021-03-10 22:26:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:26:39,086 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:26:39,086 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:26:39,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-10 22:26:39,086 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:26:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:26:39,087 INFO L82 PathProgramCache]: Analyzing trace with hash -371318787, now seen corresponding path program 20 times [2021-03-10 22:26:39,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:26:39,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662266790] [2021-03-10 22:26:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:26:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:26:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:26:39,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662266790] [2021-03-10 22:26:39,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:26:39,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-10 22:26:39,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069383096] [2021-03-10 22:26:39,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 22:26:39,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:26:39,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 22:26:39,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:26:39,274 INFO L87 Difference]: Start difference. First operand 224459 states and 801690 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:26:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:26:42,230 INFO L93 Difference]: Finished difference Result 309842 states and 1087540 transitions. [2021-03-10 22:26:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-10 22:26:42,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:26:42,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:26:43,995 INFO L225 Difference]: With dead ends: 309842 [2021-03-10 22:26:43,995 INFO L226 Difference]: Without dead ends: 305530 [2021-03-10 22:26:43,995 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 362.1ms TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:26:58,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305530 states. [2021-03-10 22:27:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305530 to 260238. [2021-03-10 22:27:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260238 states, 260237 states have (on average 3.542628450220376) internal successors, (921923), 260237 states have internal predecessors, (921923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260238 states to 260238 states and 921923 transitions. [2021-03-10 22:27:06,600 INFO L78 Accepts]: Start accepts. Automaton has 260238 states and 921923 transitions. Word has length 75 [2021-03-10 22:27:06,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:27:06,600 INFO L480 AbstractCegarLoop]: Abstraction has 260238 states and 921923 transitions. [2021-03-10 22:27:06,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:06,600 INFO L276 IsEmpty]: Start isEmpty. Operand 260238 states and 921923 transitions. [2021-03-10 22:27:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:27:07,284 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:27:07,284 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:27:07,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-10 22:27:07,284 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:27:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:27:07,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1690552861, now seen corresponding path program 21 times [2021-03-10 22:27:07,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:27:07,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799646018] [2021-03-10 22:27:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:27:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:27:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:27:07,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799646018] [2021-03-10 22:27:07,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:27:07,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-10 22:27:07,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65203708] [2021-03-10 22:27:07,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 22:27:07,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:27:07,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 22:27:07,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-03-10 22:27:07,468 INFO L87 Difference]: Start difference. First operand 260238 states and 921923 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:11,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:27:11,217 INFO L93 Difference]: Finished difference Result 328397 states and 1148074 transitions. [2021-03-10 22:27:11,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-10 22:27:11,219 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:27:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:27:12,288 INFO L225 Difference]: With dead ends: 328397 [2021-03-10 22:27:12,288 INFO L226 Difference]: Without dead ends: 326113 [2021-03-10 22:27:12,289 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 351.5ms TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2021-03-10 22:27:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326113 states. [2021-03-10 22:27:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326113 to 257333. [2021-03-10 22:27:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257333 states, 257332 states have (on average 3.542151772807113) internal successors, (911509), 257332 states have internal predecessors, (911509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:36,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257333 states to 257333 states and 911509 transitions. [2021-03-10 22:27:36,227 INFO L78 Accepts]: Start accepts. Automaton has 257333 states and 911509 transitions. Word has length 75 [2021-03-10 22:27:36,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:27:36,227 INFO L480 AbstractCegarLoop]: Abstraction has 257333 states and 911509 transitions. [2021-03-10 22:27:36,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:36,228 INFO L276 IsEmpty]: Start isEmpty. Operand 257333 states and 911509 transitions. [2021-03-10 22:27:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:27:38,098 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:27:38,098 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:27:38,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-10 22:27:38,098 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:27:38,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:27:38,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1898552093, now seen corresponding path program 22 times [2021-03-10 22:27:38,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:27:38,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552264445] [2021-03-10 22:27:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:27:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:27:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:27:38,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552264445] [2021-03-10 22:27:38,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:27:38,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-10 22:27:38,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340965489] [2021-03-10 22:27:38,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 22:27:38,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:27:38,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 22:27:38,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-03-10 22:27:38,412 INFO L87 Difference]: Start difference. First operand 257333 states and 911509 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:27:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:27:41,693 INFO L93 Difference]: Finished difference Result 312208 states and 1096533 transitions. [2021-03-10 22:27:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 22:27:41,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:27:41,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:27:42,768 INFO L225 Difference]: With dead ends: 312208 [2021-03-10 22:27:42,769 INFO L226 Difference]: Without dead ends: 312088 [2021-03-10 22:27:42,769 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:27:57,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312088 states. [2021-03-10 22:28:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312088 to 266248. [2021-03-10 22:28:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266248 states, 266247 states have (on average 3.536216370513095) internal successors, (941507), 266247 states have internal predecessors, (941507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266248 states to 266248 states and 941507 transitions. [2021-03-10 22:28:06,383 INFO L78 Accepts]: Start accepts. Automaton has 266248 states and 941507 transitions. Word has length 75 [2021-03-10 22:28:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:28:06,383 INFO L480 AbstractCegarLoop]: Abstraction has 266248 states and 941507 transitions. [2021-03-10 22:28:06,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 266248 states and 941507 transitions. [2021-03-10 22:28:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:28:07,128 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:28:07,128 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:28:07,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-10 22:28:07,128 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:28:07,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:28:07,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2141821181, now seen corresponding path program 23 times [2021-03-10 22:28:07,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:28:07,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280076488] [2021-03-10 22:28:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:28:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:28:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:28:07,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280076488] [2021-03-10 22:28:07,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:28:07,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-10 22:28:07,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159729126] [2021-03-10 22:28:07,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 22:28:07,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:28:07,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 22:28:07,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:28:07,330 INFO L87 Difference]: Start difference. First operand 266248 states and 941507 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:28:10,980 INFO L93 Difference]: Finished difference Result 313146 states and 1099709 transitions. [2021-03-10 22:28:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 22:28:10,981 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:28:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:28:12,153 INFO L225 Difference]: With dead ends: 313146 [2021-03-10 22:28:12,154 INFO L226 Difference]: Without dead ends: 311956 [2021-03-10 22:28:12,154 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 169.6ms TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-03-10 22:28:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311956 states. [2021-03-10 22:28:32,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311956 to 272569. [2021-03-10 22:28:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272569 states, 272568 states have (on average 3.533081653018696) internal successors, (963005), 272568 states have internal predecessors, (963005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272569 states to 272569 states and 963005 transitions. [2021-03-10 22:28:35,207 INFO L78 Accepts]: Start accepts. Automaton has 272569 states and 963005 transitions. Word has length 75 [2021-03-10 22:28:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:28:35,207 INFO L480 AbstractCegarLoop]: Abstraction has 272569 states and 963005 transitions. [2021-03-10 22:28:35,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 272569 states and 963005 transitions. [2021-03-10 22:28:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:28:36,964 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:28:36,964 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:28:36,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-10 22:28:36,964 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:28:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:28:36,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1272327421, now seen corresponding path program 24 times [2021-03-10 22:28:36,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:28:36,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468079946] [2021-03-10 22:28:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:28:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:28:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:28:37,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468079946] [2021-03-10 22:28:37,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:28:37,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-10 22:28:37,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140926325] [2021-03-10 22:28:37,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 22:28:37,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:28:37,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 22:28:37,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-03-10 22:28:37,146 INFO L87 Difference]: Start difference. First operand 272569 states and 963005 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:28:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:28:40,740 INFO L93 Difference]: Finished difference Result 338960 states and 1185340 transitions. [2021-03-10 22:28:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 22:28:40,741 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:28:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:28:42,728 INFO L225 Difference]: With dead ends: 338960 [2021-03-10 22:28:42,728 INFO L226 Difference]: Without dead ends: 335901 [2021-03-10 22:28:42,729 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-03-10 22:28:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335901 states. [2021-03-10 22:29:04,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335901 to 272152. [2021-03-10 22:29:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272152 states, 272151 states have (on average 3.533343621739402) internal successors, (961603), 272151 states have internal predecessors, (961603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272152 states to 272152 states and 961603 transitions. [2021-03-10 22:29:06,939 INFO L78 Accepts]: Start accepts. Automaton has 272152 states and 961603 transitions. Word has length 75 [2021-03-10 22:29:06,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 22:29:06,940 INFO L480 AbstractCegarLoop]: Abstraction has 272152 states and 961603 transitions. [2021-03-10 22:29:06,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 272152 states and 961603 transitions. [2021-03-10 22:29:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-03-10 22:29:07,699 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 22:29:07,700 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 22:29:07,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-10 22:29:07,700 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 22:29:07,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 22:29:07,701 INFO L82 PathProgramCache]: Analyzing trace with hash -439741013, now seen corresponding path program 25 times [2021-03-10 22:29:07,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 22:29:07,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858045198] [2021-03-10 22:29:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 22:29:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 22:29:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 22:29:07,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858045198] [2021-03-10 22:29:07,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 22:29:07,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 22:29:07,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615468279] [2021-03-10 22:29:07,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 22:29:07,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 22:29:07,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 22:29:07,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:29:07,832 INFO L87 Difference]: Start difference. First operand 272152 states and 961603 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 22:29:11,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 22:29:11,790 INFO L93 Difference]: Finished difference Result 406672 states and 1447464 transitions. [2021-03-10 22:29:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 22:29:11,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-03-10 22:29:11,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 22:29:14,322 INFO L225 Difference]: With dead ends: 406672 [2021-03-10 22:29:14,323 INFO L226 Difference]: Without dead ends: 406672 [2021-03-10 22:29:14,323 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-10 22:29:33,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406672 states. [2021-03-10 22:29:40,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406672 to 307658. [2021-03-10 22:29:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307658 states, 307657 states have (on average 3.5411643486090028) internal successors, (1089464), 307657 states have internal predecessors, (1089464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-03-10 22:29:41,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-10 22:29:41,773 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 22:29:41,780 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 22:29:41,781 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 10:29:41 BasicIcfg [2021-03-10 22:29:41,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 22:29:41,781 INFO L168 Benchmark]: Toolchain (without parser) took 684422.21 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 10.4 GB in the end (delta: -10.1 GB). Peak memory consumption was 6.0 GB. Max. memory is 16.0 GB. [2021-03-10 22:29:41,781 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 22:29:41,782 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.49 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 22:29:41,782 INFO L168 Benchmark]: Boogie Preprocessor took 25.22 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:29:41,782 INFO L168 Benchmark]: RCFGBuilder took 420.47 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 230.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. [2021-03-10 22:29:41,782 INFO L168 Benchmark]: TraceAbstraction took 683937.11 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 229.9 MB in the beginning and 10.4 GB in the end (delta: -10.2 GB). Peak memory consumption was 6.0 GB. Max. memory is 16.0 GB. [2021-03-10 22:29:41,782 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 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.49 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.22 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 420.47 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 230.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 683937.11 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 229.9 MB in the beginning and 10.4 GB in the end (delta: -10.2 GB). Peak memory consumption was 6.0 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 116). Cancelled while ReachableStatesComputation was computing reachable states (130661 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 683779.5ms, OverallIterations: 25, TraceHistogramMax: 1, EmptinessCheckTime: 16755.6ms, AutomataDifference: 115576.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16154.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5211 SDtfs, 12397 SDslu, 25788 SDs, 0 SdLazy, 19382 SolverSat, 2946 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12905.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 474 GetRequests, 64 SyntacticMatches, 20 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 5969.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=272569occurred in iteration=23, InterpolantAutomatonStates: 392, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 530030.7ms AutomataMinimizationTime, 25 MinimizatonAttempts, 2834475 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 69.6ms SsaConstructionTime, 382.1ms SatisfiabilityAnalysisTime, 4487.5ms InterpolantComputationTime, 1875 NumberOfCodeBlocks, 1875 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1850 ConstructedInterpolants, 0 QuantifiedInterpolants, 13516 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown